• Overview:

    • Phish Tale of the Week
    • Ransomware Attack Hits Ardent Health Services, Disrupts Hospital Operations
    • Ukrainian Authorities Arrest Key Ransomware Operator in International Crackdown
    • How can Netizen help?

    Phish Tale of the Week

    Often times phishing campaigns, created by malicious actors, target users by utilizing social engineering. For example, in this text message, the actors are appearing as Royal Mail, a courier service, and informing you that action needs to be taken regarding your package’s delivery. The message politely explains that “RoyalMail” is holding our parcel at the nearest PO Depot, and that we just need to rearrange a delivery in order to receive it. It seems both urgent and genuine, so why shouldn’t we visit the link they sent us? Luckily, there’s plenty of reasons that point to this being a scam.

    Here’s how we can tell not to click on this smishing link:

    1. The first warning sign for this SMS is the fact that it includes a URL in the message. Typically, companies will send notifications like this through SMS, but they’ll end with a call to action within an already trusted environment, for example the statement “check your tracking details for more information.” Always be sure to think twice and check “urgent” statuses like this one through a trusted environment, and never click on links sent through an SMS from an unknown number.
    2. The second warning signs in this text is the messaging. This message tries to create a sense of urgency and get you to take action by using language such as “is being held” and “Please visit.” Phishing scams commonly attempt to create a sense of urgency in their messages in order to get you to click their link without thinking about it first. Always be sure to thoroughly inspect the style and tone of all texts before following a link sent through SMS.
    3. The final warning sign for this email is the style of the link. After a quick look at the address, one can quickly deduce that we’ve been sent a phishing link. Trusted companies like Royal Mail typically will use a simple, standardized domain as their website. For example, Royal Mail’s official website is simply “royalmail.com.” Threat actors typically will utilize message-related words in the links they send you. After taking one quick look at the URL, “post.office-costs.com,” it’s very obvious that this email is an attempt at a smish.


    General Recommendations:

    smishing attack will typically direct the user to click on a link where they will then be prompted to update personal information, such as a password, credit card, social security, or bank account information. A legitimate company already has this sensitive information and would not ask for it again, especially via your text messages. 

    1. Scrutinize your messages before clicking anything. Have you ordered anything recently? Does this order number match the one I already have? Did the message come from a store you don’t usually order supplies from or a service you don’t use? If so, it’s probably a phishing attempt.
    2. Verify that the sender is actually from the company sending the message.
    3. Did you receive a message from someone you don’t recognize? Are they asking you to sign into a website to give Personally Identifiable Information (PII) such as credit card numbers, social security number, etc. A legitimate company will never ask for PII via instant message or email.
    4. Do not give out personal or company information over the internet.
    5. Do not click on unrecognized links or attachments. If you do proceed, verify that the URL is the correct one for the company/service and it has the proper security in place, such as HTTPS.

    Many smishing messages pose a sense of urgency or even aggressiveness to prompt a form of intimidation. Any SMS requesting immediate action should be vetted thoroughly to determine whether or not it is a scam. Also, beware of messages that seek to tempt users into opening an attachment or visiting a link. For example, an attachment titled “Fix your account now” may draw the question “What is wrong with my account?” and prompt you to click a suspicious link.

    Cybersecurity Brief

    In this month’s Cybersecurity Brief:

    Ransomware Attack Hits Ardent Health Services, Disrupts Hospital Operations

    On November 27, 2023, Ardent Health Services, a healthcare provider operating 30 hospitals in states like Texas, New Mexico, Oklahoma, and New Jersey, was hit by a devastating ransomware attack. The attack occurred on Thanksgiving Day, a time typically marked by reduced staffing, which likely exacerbated the situation. The ransomware not only disrupted Ardent’s IT systems but also forced the shutdown of their critical electronic healthcare records system. This led to the diversion of some emergency room patients to other hospitals, highlighting the direct impact on patient care and safety.

    The consequences of the attack were far-reaching. The inability to access electronic health records is a significant setback in any healthcare setting, as it can delay critical patient care processes. The incident also put additional strain on nearby healthcare facilities that had to accommodate diverted patients. It vividly illustrated how cybersecurity breaches can have immediate and tangible effects on people’s lives, especially in sectors as sensitive as healthcare.

    Ardent Health Services responded by shutting down numerous IT systems to contain the breach. The main objective was to restore critical services and ensure the safety of patients amidst the chaos. However, the attack raised significant concerns about the preparedness of healthcare institutions to handle such sophisticated cyber threats. It highlighted the necessity for robust cybersecurity infrastructure and rigorous emergency response protocols to minimize the impact of such attacks on healthcare delivery.

    The Ardent Health Services ransomware attack serves as a critical reminder of the growing cybersecurity threats facing the healthcare sector. Hospitals and healthcare providers are lucrative targets for cybercriminals due to the sensitive nature of the data they handle and their crucial role in public health. This incident underscores the importance of implementing strong cybersecurity measures, including proactive defense strategies, regular data backups, and comprehensive emergency plans, to protect against such disruptive and potentially dangerous cyberattacks.

    To read more about this article, click here.

    Ukrainian Authorities Arrest Key Ransomware Operator in International Crackdown

    In a significant operation against cybercrime, Ukrainian authorities, in cooperation with international law enforcement agencies, arrested an individual on November 28, 2023. This person is believed to be a key figure behind a ransomware group that has targeted organizations in 71 countries. The arrest was part of a broader crackdown that also saw four other individuals detained, signifying a substantial effort in the global fight against ransomware.

    The arrested individual’s group was known for deploying four different strains of ransomware, demonstrating the diversification and sophistication of modern cybercriminal operations. Their tactics included brute force attacks, SQL injection attacks, and the distribution of emails with infected attachments. These methods underscore the evolving nature of cyber threats and the challenges organizations face in protecting their data and systems.

    The operation’s success was largely due to the collaboration between various international law enforcement agencies, including Europol. This global cooperation highlights the necessity of a unified approach in tackling cybercrime, particularly ransomware, which often transcends borders. The arrest sends a strong message to cybercriminals worldwide about the increasing effectiveness and reach of international law enforcement in combating cyber threats.

    This crackdown on a ransomware gang is a critical development in the cybersecurity landscape. It demonstrates a concerted effort by global authorities to pursue and apprehend individuals responsible for significant cyber threats. However, it also brings into focus the continuous need for enhanced cybersecurity measures at the organizational and national levels. As ransomware gangs become more sophisticated, so must the strategies to counter them.

    The arrest in Ukraine is a positive step toward a more secure digital environment, emphasizing the importance of international cooperation in cybercrime investigations. It reinforces the commitment of law enforcement agencies to track down and prosecute individuals behind these disruptive cyberattacks. This event is a crucial reminder of the ongoing battle against ransomware and the need for continued vigilance and robust cybersecurity defenses in all sectors.

    To read more about this article, click here.

    Netizen ensures that security gets built-in and not bolted-on. Providing advanced solutions to protect critical IT infrastructure such as the popular “CISO-as-a-Service” wherein companies can leverage the expertise of executive-level cybersecurity professionals without having to bear the cost of employing them full time. 

    We also offer compliance support, vulnerability assessments, penetration testing, and more security-related services for businesses of any size and type. 

    Additionally, Netizen offers an automated and affordable assessment tool that continuously scans systems, websites, applications, and networks to uncover issues. Vulnerability data is then securely analyzed and presented through an easy-to-interpret dashboard to yield actionable risk and compliance information for audiences ranging from IT professionals to executive managers.

    Netizen is a CMMI V2.0 Level 3, ISO 9001:2015, and ISO 27001:2013 (Information Security Management) certified company. We are a proud Service-Disabled Veteran-Owned Small Business that is recognized by the U.S. Department of Labor for hiring and retention of military veterans. 

  • Telekopye: Decoding Online Marketplace Scams

    Functioning as a Telegram bot-based toolkit, Telekopye, an e-commerce threat vector, streamlines the execution of advanced phishing operations. It enables perpetrators, referred to as ‘Neanderthals’, to deploy a range of tactics including spear-phishing through crafted HTML pages, domain spoofing, and social engineering via SMS and email phishing campaigns. This toolkit marks a significant escalation in the ease and efficacy of executing marketplace frauds, leveraging deceptive domain strategies and integrating features like image manipulation and automated financial transaction tracking. Understanding the technical operation and structure of Telekopye is imperative for cybersecurity professionals in devising robust defense mechanisms against such agile and adaptive cyber threats.

    An Overview of Telekopye’s Operations

    1. Phishing Web Page Generation: At the heart of Telekopye lies its ability to create convincing phishing web pages. These pages, cloned from pre-built HTML templates, are skillfully crafted to imitate legitimate marketplace payment interfaces. Customizable to the smallest details, they lure victims into entering sensitive data under the guise of routine transactions.

    2. Deceptive Domain Strategy: A critical aspect of Telekopye’s modus operandi is its cunning use of domain names. By registering domains and subdomains that mimic established marketplace URLs, it becomes challenging for users to discern the fake from the real. This subtlety in duplicating legitimate URLs significantly enhances the scam’s success rate.

    3. Email and SMS Phishing: Furthering its reach, Telekopye equips scammers with the tools to dispatch authentic-looking phishing emails and SMS messages. These communications, embedded with malicious links, direct victims to the crafted phishing sites. The toolkit’s sophistication extends to spoofing email headers, adding an extra layer of legitimacy.

    4. Image Manipulation Capabilities: Beyond text, Telekopye manipulates images to avoid detection by search engines. This feature, coupled with the ‘Render bot’ component for generating fake screenshots, creates a more convincing scam facade, thereby increasing the likelihood of deceiving vigilant users.

    5. Financial Backend and Payouts: Beyond orchestrating scams, Telekopye meticulously manages the financial aftermath. It keeps track of each scammer’s contributions and streamlines the payout process, predominantly in cryptocurrencies, through an intricate system that calculates and records the financial transactions involved in each scam.

    More Advanced Features

    • Experimental QR Code Generation: A notable addition to Telekopye’s arsenal is the QR code generation feature, hinting at the potential for new scamming methods, such as direct mobile payment frauds.
    • Multi-Language SMS Support: To cast a wider net, Telekopye includes SMS templates in various languages, broadening its target demographic.
    • Online SMS Service Integration: The toolkit enhances its operational scope by leveraging online services like smscab.ru for mass SMS distribution, further amplifying its reach.
    • Decentralized Operations: Telekopye’s user base, labeled as ‘Neanderthals,’ operates within a structured hierarchy ranging from administrators with extensive access to blocked users with no privileges. Each level within this hierarchy plays a distinct role in the scamming ecosystem, shaping the operational dynamics of the group.

    Mitigation and Prevention

    • User Awareness and Education: Understanding the common tactics and appearances of phishing attempts is a critical defense strategy.
    • Robust Security Measures: Online marketplaces must adopt advanced security protocols to detect and preemptively block these sophisticated phishing attempts.
    • Vigilance in Communication: Users should remain alert to inconsistencies in language and be skeptical of offers that seem unusually advantageous.

    How Can Netizen Help?

    Netizen ensures that security gets built-in and not bolted-on. Providing advanced solutions to protect critical IT infrastructure such as the popular “CISO-as-a-Service” wherein companies can leverage the expertise of executive-level cybersecurity professionals without having to bear the cost of employing them full time. 

    We also offer compliance support, vulnerability assessments, penetration testing, and more security-related services for businesses of any size and type. 

    Additionally, Netizen offers an automated and affordable assessment tool that continuously scans systems, websites, applications, and networks to uncover issues. Vulnerability data is then securely analyzed and presented through an easy-to-interpret dashboard to yield actionable risk and compliance information for audiences ranging from IT professionals to executive managers.

    Netizen is an ISO 27001:2013 (Information Security Management), ISO 9001:2015, and CMMI V 2.0 Level 3 certified company. We are a proud Service-Disabled Veteran-Owned Small Business that is recognized by the U.S. Department of Labor for hiring and retention of military veterans. 

    Questions or concerns? Feel free to reach out to us any time –

    https://www.netizen.net/contact

  • Netizen: November 2023 Vulnerability Review

    Security vulnerabilities are a common occurrence in managing any business’s organizational security. The prompt patching and remediation of any new vulnerabilities are critical to reducing the outside attack surface. Netizen’s Security Operations Center (SOC) has compiled five vulnerabilities from November that should be immediately patched or addressed if present in your environment. Detailed writeups are below:

    CVE-2023-43902

    CVE-2023-43902 is a critical Privilege Escalation vulnerability with a high severity rating of 9.8 out of 10 according to the NIST CVSSv3 criteria. This flaw is present in EMSigner version 2.8.7, a widely used software for digital signature and document management. The core issue lies in the handling of password reset tokens within the software. Specifically, the vulnerability allows unauthenticated attackers to gain access to the accounts of all registered users, including those with administrator privileges, by exploiting a flaw in the password reset mechanism. In technical terms, the vulnerability arises due to insufficient validation of password reset tokens. This means that an attacker can craft a malicious token that bypasses the standard authentication process, thereby granting them unauthorized access to any user account. This is particularly concerning because it does not require any form of user interaction, making it easier for an attacker to exploit the vulnerability. For more technical details or proof of concept, refer to the SecPro documentation and the NVD entry.

    CVE-2023-47246

    In SysAid On-Premise before version 23.3.36, a Path Traversal vulnerability, CVE-2023-47246, exists that could lead to code execution. This vulnerability was exploited in the wild in November 2023. The severity of this issue is classified as CRITICAL, with a NIST CVSSv3 base score rating of 9.8/10. The affected systems are those running SysAid On-Premise versions before 23.3.36. The vulnerability allows attackers to execute arbitrary code by performing a path traversal attack, accomplished by writing a malicious file to the Tomcat webroot. The attack complexity is low, but it does not require user interaction. It’s important to note that this vulnerability has been exploited in real-world incidents. To mitigate this risk, it is recommended to follow the vendor’s instructions for applying mitigations or, if mitigations are unavailable, consider discontinuing the use of the product. For more technical details or proof of concept, you can refer to the provided documentation links, and please be aware that this CVE is listed in CISA’s Known Exploited Vulnerabilities Catalog, so additional guidance and requirements may apply. For more information, refer to the vendor advisory and the NVD entry.

    CVE-2023-6074

    A critical vulnerability, documented as CVE-2023-6074, has been discovered in PHPGurukul Restaurant Table Booking System version 1.0. This vulnerability is associated with the file check-status.php within the component Booking Reservation Handler. The issue allows for SQL injection, and it has been rated as critical in severity. The vulnerability arises from improper handling of user input in the check-status.php file, which could be exploited to inject malicious SQL queries into the system. The attack can be initiated remotely, meaning that an attacker does not need physical access to the system but can exploit it from a distance. The affected version is 1.0 of the PHPGurukul Restaurant Table Booking System, and the default status of other versions is currently marked as unknown. Users and administrators of this software are strongly advised to take immediate action to address this critical vulnerability, including updating to a patched version, implementing relevant security measures, or temporarily discontinuing use until a fix is available. For more information, you can refer to the VulDB entry and the NVD entry on the vulnerability.

    CVE-2023-48020

    A Cross-Site Request Forgery (CSRF) issue, documented as CVE-2023-48020, in Dreamer CMS v4.1.3, could lead to unauthorized actions being performed on behalf of authenticated users. This vulnerability has a NIST CVSSv3 base score rating of 8.8/10 and affects Dreamer CMS version 4.1.3 specifically through the endpoint /admin/task/changeStatus. The vulnerability allows attackers to trick authenticated users into submitting a request to the vulnerable endpoint, which can result in unauthorized actions being performed without the user’s knowledge. The attack complexity is low, and it requires some user interaction, typically through social engineering or other deceptive practices. Users of Dreamer CMS v4.1.3 are advised to update to a version where this vulnerability has been addressed or to implement CSRF protection mechanisms if not already present. Technical details and potential exploits have been published, as referenced in the GitHub advisory and NVD entry.

    CVE-2023-28134

    A Local Privilege Escalation issue in Check Point Harmony Endpoint/ZoneAlarm Extreme Security, given the identifier CVE-2023-28134, could allow a local attacker to escalate privileges on affected installations. This vulnerability has a NIST CVSSv3 base score rating of 7.8/10 and affects Check Point Endpoint Security versions E84, E85, and E86. The vulnerability allows an attacker who has already obtained the ability to execute low-privileged code on the target system to exploit this vulnerability for higher privilege escalation. The attack complexity is low, and it does not require user interaction. The vulnerability results from incorrect permission assignment for critical resources. Users of affected versions are advised to follow the vendor’s recommendations for mitigation. For more information on this vulnerability, check out the NVD entry. Check Point has also provided a vendor advisory with mitigation measures.

    Conclusion:

    Software vulnerabilities are a common nuisance to IT and security teams everywhere. Organizations that prioritize the remediation and patching of these vulnerabilities will drastically reduce their attack surface and ensure no doors into their environment are left unlocked. Keeping informed about critical vulnerabilities that could potentially affect your network environment is essential to maintaining your organization’s cybersecurity.

    How Can Netizen Help?

    Netizen ensures that security gets built-in and not bolted-on. Providing advanced solutions to protect critical IT infrastructure such as the popular “CISO-as-a-Service” wherein companies can leverage the expertise of executive-level cybersecurity professionals without having to bear the cost of employing them full time. 

    We also offer compliance support, vulnerability assessments, penetration testing, and more security-related services for businesses of any size and type. 

    Additionally, Netizen offers an automated and affordable assessment tool that continuously scans systems, websites, applications, and networks to uncover issues. Vulnerability data is then securely analyzed and presented through an easy-to-interpret dashboard to yield actionable risk and compliance information for audiences ranging from IT professionals to executive managers.

    Netizen is an ISO 27001:2013 (Information Security Management), ISO 9001:2015, and CMMI V 2.0 Level 3 certified company. We are a proud Service-Disabled Veteran-Owned Small Business that is recognized by the U.S. Department of Labor for hiring and retention of military veterans. 

    Questions or concerns? Feel free to reach out to us any time –

    https://www.netizen.net/contact

  • NETIZEN TO ATTEND 2023 CDCA EASTERN DEFENSE SUMMIT

         

    Allentown, PA: Netizen Corporation, an ISO 27001:2013, ISO 9001:2015, and CMMI Level 3 certified Veteran Owned provider of cybersecurity products and solutions, will be sponsoring a booth at the 2023 CDCA Eastern Defense Summit on December 6th and 7th. The event will take place in Charleston, South Carolina at the Charleston Area Convention Center.

    With two weeks till the event, the whole Netizen team is excited to once again return to the CDCA and mingle with some of the brightest minds in the defense and cybersecurity spaces, while also exhibiting some of Netizen’s capabilities.

    This year, Netizen will be showing off some of our new custom-tailored solutions that we provide to both the commercial and federal markets, with members of our team also attending industry focused workshops throughout the event. Come find us at booth 821 and meet the whole Netizen team!

    Additional details and photographs posted from the event will be posted directly to the Netizen website at https://www.Netizen.net and all of Netizen’s social media accounts.

    About Netizen Corporation:

    America’s fastest-growing cybersecurity company, 2nd fastest-growing Veteran-owned company, and 47th fastest-growing private company overall in the nation according to the 2019 Inc. 5000 list of the nation’s most successful businesses, Netizen is a highly specialized cybersecurity solutions provider. They also develop innovative software products that include the award-winning AutoSTIG and Overwatch Governance Suite.

    The company, a certified Service Disabled Veteran Owned Business (SDVOSB), is headquartered in Allentown, PA, with additional locations in Virginia (DC Metro), South Carolina (Charleston), and Florida (Orlando). In addition to being one of the fastest-growing businesses in the US, Netizen has also been named as one of the nation’s “Best Workplaces” by Inc. Magazine and is a US Department of Labor HIRE Vets Platinum Medallion awardee for veteran hiring and support for two years in a row. Learn more at Netizen.net.

    POINT OF CONTACT:

    Akhil Handa

    Chief Operating Officer (COO)

    Phone: 1-800-450-1773

    Email:   press@Netizen.net     

        

  • CISA Launches New Pilot Program to Bolster Cybersecurity in Critical Infrastructure Sectors

    The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has taken a significant step towards enhancing the cybersecurity posture of the nation’s critical infrastructure sectors. The agency has announced the launch of an innovative pilot program, aimed at extending cutting-edge cybersecurity shared services to critical infrastructure entities, especially those most in need of such support. This move marks a pivotal development in CISA’s ongoing efforts to fortify national cyber defenses against an increasingly complex and evolving threat landscape.

    Boosting Cybersecurity in Critical Infrastructure

    Central to this initiative is CISA’s focus on identifying and collaborating with critical infrastructure entities that could benefit from leveraging commercial shared services provided by the agency. This approach is tailored to evaluate and stress-test CISA’s service delivery mechanisms. More importantly, it showcases CISA’s capability to acquire, deploy, and operate cybersecurity services on a large scale, ensuring robustness and efficiency in its cybersecurity efforts. The program is set to demonstrate CISA’s readiness and adaptability in managing cyber threats across diverse infrastructure sectors. The pilot program’s inception is a direct response to the escalating volume and sophistication of cyber threats targeting the United States’ critical infrastructure. Events such as the ransomware attack on Colonial Pipeline and the activities of advanced threat actors have brought to light the urgent need for enhanced cybersecurity measures. By extending its services beyond federal agencies, CISA aims to provide a safety net for infrastructure entities that are rich in targets but poor in resources, especially in sectors that are vital yet vulnerable to cyber attacks.

    Target Rich, Resource Poor

    In its initial phase, the pilot program will focus on three specific sectors that CISA Director Jen Easterly has identified as “Target Rich, Resource Poor.” These sectors include healthcare, water, and K-12 education, all of which play crucial roles in the daily lives of Americans and are increasingly reliant on potentially vulnerable digital infrastructure. The program seeks to establish a common baseline of cyber protection across these sectors, ultimately reducing the frequency and impact of damaging cyberattacks.

    CISA’s Deploys Protective DNS Resolver

    One of the key components of the pilot program is the deployment of CISA’s Protective Domain Name System (DNS) Resolver. Until now, this tool was exclusively available to federal civilian agencies. The Protective DNS Resolver is a proven and cost-effective solution that employs U.S. government and commercial threat intelligence. It functions by preventing systems from connecting to known or suspected malicious domains, thereby mitigating common cyber risks such as ransomware, phishing, and malicious redirects.

    Conclusion

    By offering these services, CISA is not only expanding its reach but also demonstrating its commitment to a more inclusive and comprehensive approach to national cybersecurity. The pilot program, therefore, represents a strategic expansion of CISA’s role as a provider of cybersecurity services, transitioning from a federal focus to encompassing a wider spectrum of critical infrastructure entities across the nation. This initiative by CISA aligns with the broader national objective of strengthening cybersecurity defenses. As the threat landscape evolves, so does the need for innovative and scalable solutions that can effectively address the complex challenges faced by critical infrastructure sectors. Through this pilot program, CISA is poised to play a pivotal role in shaping the future of cybersecurity in the United States, ensuring the resilience and security of essential services that underpin American society.

    How Can Netizen Help?

    Netizen ensures that security gets built-in and not bolted-on. Providing advanced solutions to protect critical IT infrastructure such as the popular “CISO-as-a-Service” wherein companies can leverage the expertise of executive-level cybersecurity professionals without having to bear the cost of employing them full time. 

    We also offer compliance support, vulnerability assessments, penetration testing, and more security-related services for businesses of any size and type. 

    Additionally, Netizen offers an automated and affordable assessment tool that continuously scans systems, websites, applications, and networks to uncover issues. Vulnerability data is then securely analyzed and presented through an easy-to-interpret dashboard to yield actionable risk and compliance information for audiences ranging from IT professionals to executive managers.

    Netizen is an ISO 27001:2013 (Information Security Management), ISO 9001:2015, and CMMI V 2.0 Level 3 certified company. We are a proud Service-Disabled Veteran-Owned Small Business that is recognized by the U.S. Department of Labor for hiring and retention of military veterans. 

    Questions or concerns? Feel free to reach out to us any time – 

    https://www.netizen.net/contact

  • Understanding the Randstorm Vulnerability in Cryptocurrency Wallets: A Comprehensive Analysis

    Cryptocurrency wallets, particularly those created between 2011 and 2015, have recently been thrust into the spotlight due to a significant vulnerability known as “Randstorm.” This vulnerability has raised concerns across the cryptocurrency community, highlighting the risks associated with outdated software and insufficient security measures in digital asset management.

    What is the Randstorm Vulnerability?

    The Randstorm vulnerability stems from a flaw in BitcoinJS, a JavaScript library used for building Bitcoin and other cryptocurrency applications. Specifically, the issue lies in the library’s use of a now-defunct randomization function, combined with weaknesses in pseudo-random number generators in major web browsers during 2011-2015. This combination resulted in the generation of crypto wallet keys that were not sufficiently random, making them vulnerable to brute-force attacks. The vulnerability is linked to insufficient entropy in the key generation process. Entropy, in this context, refers to the randomness in cryptographic keys, usually derived from random bits of user input like mouse movements and keyboard clicks. The affected keys often utilized less entropy than required, sometimes as low as 48 bits, instead of the recommended 256 bits. This shortfall made the keys easier to guess and crack. Several projects that used the vulnerable BitcoinJS library, like BrainWallet, CoinPunk, and QuickCoin, are no longer operational. However, some platforms that incorporated this library, such as Blockchain.com, Bitgo, Dogechain.info, and Blocktrail, are still active and potentially at risk.

    The Discovery and Impact

    Researchers at Unciphered, a startup focused on recovering inaccessible cryptocurrency wallets, uncovered the Randstorm vulnerability while assisting a customer in January 2022. The customer had lost access to a Bitcoin wallet created in 2014 on Blockchain.info (now Blockchain.com). Although the recovery attempt failed, it led to the discovery of the vulnerability, which could potentially affect millions of wallets containing hundreds of millions of dollars.

    The issue was not entirely unknown, as a security researcher identified similar flaws in 2018. However, the recent findings by Unciphered have brought renewed attention to the problem.

    Moving Forward: Recommendations and Precautions

    Wallets created before March 2012 are most vulnerable, but those generated up to 2015 remain at risk, albeit to a lesser degree. Unciphered estimates that around 1.4 million bitcoins could be parked in these potentially vulnerable wallets. Unciphered has advised individuals with assets in affected wallets to transfer them to newly generated wallets created with trusted, updated software. They have also been working with various entities to notify affected users and raise awareness about the threat.

    The Bigger Picture: Open-Source Software and Security

    This situation highlights a critical issue in the realm of open-source software and its security implications. Open-source programs, while beneficial for community collaboration and development, can age and become vulnerable if not adequately maintained and updated. This is a stark reminder for both developers and users to stay vigilant about the software they use, especially when it concerns financial assets like cryptocurrencies.

    Conclusion

    The Randstorm vulnerability presents a serious security concern in the cryptocurrency world, underscoring the need for continuous vigilance and updates in digital wallet management. As the digital currency landscape evolves, so too must the security measures that protect it. Users of potentially affected wallets are strongly encouraged to take immediate action to secure their assets and contribute to a safer, more secure cryptocurrency environment.

    How Can Netizen Help?

    Netizen ensures that security gets built-in and not bolted-on. Providing advanced solutions to protect critical IT infrastructure such as the popular “CISO-as-a-Service” wherein companies can leverage the expertise of executive-level cybersecurity professionals without having to bear the cost of employing them full time. 

    We also offer compliance support, vulnerability assessments, penetration testing, and more security-related services for businesses of any size and type. 

    Additionally, Netizen offers an automated and affordable assessment tool that continuously scans systems, websites, applications, and networks to uncover issues. Vulnerability data is then securely analyzed and presented through an easy-to-interpret dashboard to yield actionable risk and compliance information for audiences ranging from IT professionals to executive managers.

    Netizen is an ISO 27001:2013 (Information Security Management), ISO 9001:2015, and CMMI V 2.0 Level 3 certified company. We are a proud Service-Disabled Veteran-Owned Small Business that is recognized by the U.S. Department of Labor for hiring and retention of military veterans. 

    Questions or concerns? Feel free to reach out to us any time – 

    https://www.netizen.net/contact

  • Microsoft Releases Patches for 63 Vulnerabilities, Including 5 Zero-Days in November 2023 Update

    In a critical update, Microsoft has addressed 63 vulnerabilities in its operating systems as part of its November 2023 Patch Tuesday. This includes the patching of five zero-day vulnerabilities, three of which are currently being exploited by attackers. These updates are vital for securing systems against potential breaches and attacks.

    Zero-Day Vulnerabilities in the November Patch

    Actively Exploited Zero-Days:

    1. CVE-2023-36025: This vulnerability lies within the Windows SmartScreen, allowing attackers to bypass protective checks against malicious websites and files. The exploitation hinges on user interaction, where clicking on a compromised Internet Shortcut or hyperlink can lead to a security breach.
    2. CVE-2023-36033: An Elevation of Privilege (EoP) flaw in the Windows Desktop Window Manager (DWM) Core Library. If exploited, it could enable attackers to gain SYSTEM privileges, significantly compromising system security.
    3. CVE-2023-36036: Another EoP vulnerability, this time in the Windows Cloud Files Mini Filter Driver, also potentially granting SYSTEM privileges to attackers.

    Other Notable Zero-Days:

    • CVE-2023-36413: Targets Microsoft Office, allowing attackers to bypass the Office Protected View, which usually restricts editing of potentially unsafe documents.
    • CVE-2023-36038: Affects ASP.NET, potentially leading to denial of service through resource exhaustion by cancelling HTTP requests repeatedly.

    Other Patch Tuesday Vulnerabilities

    Three critical vulnerabilities were addressed in the patch out of the 58 non-zero days. Firstly, a significant Azure information disclosure vulnerability was patched, which if exploited could have led to sensitive data exposure. Secondly, a flaw in Windows Internet Connection Sharing (ICS) was fixed, previously enabling remote code execution. Lastly, a Hyper-V escape flaw was rectified, which, if exploited, could have allowed attackers to execute programs with SYSTEM privileges on the host machine. In total, the vulnerability category spread is as follows:

    • 16 Elevation of Privilege Vulnerabilities
    • 6 Security Feature Bypass Vulnerabilities
    • 15 Remote Code Execution Vulnerabilities
    • 6 Information Disclosure Vulnerabilities
    • 5 Denial of Service Vulnerabilities
    • 11 Spoofing Vulnerabilities

    Organizations using Microsoft Exchange Server should urgently deploy the new patches. The updates include a fix for CVE-2023-36439, a vulnerability that could allow attackers to install malicious software on an Exchange server.

    Conclusion

    Given the severity and active exploitation of some vulnerabilities, it’s crucial for users and administrators to apply these updates promptly. Delaying could leave systems exposed to security breaches, data theft, and operational disruptions. For a detailed understanding of all vulnerabilities and their impacts, check out the full Patch Tuesday report here.

    How Can Netizen Help?

    Netizen ensures that security gets built-in and not bolted-on. Providing advanced solutions to protect critical IT infrastructure such as the popular “CISO-as-a-Service” wherein companies can leverage the expertise of executive-level cybersecurity professionals without having to bear the cost of employing them full time. 

    We also offer compliance support, vulnerability assessments, penetration testing, and more security-related services for businesses of any size and type. 

    Additionally, Netizen offers an automated and affordable assessment tool that continuously scans systems, websites, applications, and networks to uncover issues. Vulnerability data is then securely analyzed and presented through an easy-to-interpret dashboard to yield actionable risk and compliance information for audiences ranging from IT professionals to executive managers.

    Netizen is an ISO 27001:2013 (Information Security Management), ISO 9001:2015, and CMMI V 2.0 Level 3 certified company. We are a proud Service-Disabled Veteran-Owned Small Business that is recognized by the U.S. Department of Labor for hiring and retention of military veterans. 

    Questions or concerns? Feel free to reach out to us any time – 

    https://www.netizen.net/contact

  • The Evolution from Hive to Hunters International: Ransomware Gangs Leveraging Peer Innovations

    In a landmark operation in early 2023, the FBI, along with German and Dutch authorities, dismantled Hive, a prolific ransomware group. This collective had extorted over $100 million since June 2021, targeting a wide range of sectors. The FBI’s operation infiltrated Hive’s network over seven months, obtaining decryption keys for over 300 recent victims and an additional 1,000 keys for previous victims. This effort saved around $130 million in potential ransom payments. However, no arrests were made, and the dismantling of Hive’s infrastructure left a void in the ransomware landscape. Hunters International, another ransomware group, appeared soon after Hive’s fall, initially suspected of being a rebranded version of Hive. However, investigations revealed otherwise.

    How is Hunters International Different From Hive?

    While Hunters International has a 60% code overlap with Hive, the ransomware group has made key changes to the traditional Hive MO. To begin with, Hunters International has simplified Hive’s encryption method. They embed the encryption key within the encrypted files, using a ChaCha20-Poly1305 and RSA OAEP combination, unlike Hive’s more complex key generation and storage process. The group streamlined Hive’s extensive command-line arguments, indicating an effort to simplify operations. This change could enhance the malware’s usability for attackers. A significant aspect of their operation involves aggressive attacks on backup and recovery systems, notably targeting the Shadow Copy service, to undermine data recovery efforts. This new group, equipped with Hive’s advanced toolkit and an opportunistic approach, poses a significant challenge. Their focus on data exfiltration represents a shift in ransomware tactics, prioritizing data theft over mere encryption.

    Versatility of Ransomware Groups in Utilizing Others’ Source Code

    One of the most striking aspects of modern ransomware operations, as demonstrated by the situation with Hive and Hunters International, is the versatility and adaptability of ransomware groups, particularly in their use of other groups’ source codes. By acquiring Hive’s source code and infrastructure, Hunters International demonstrated how ransomware groups can rapidly evolve and sustain their operations, even after major law enforcement disruptions. Below are some key points on ransomware code sharing and adaptation, and how it allows ransomware groups to evolve and rapidly become more powerful.

    1. Resource Acquisition and Adaptation: Ransomware groups often acquire resources from dismantled groups, not just for convenience, but also to capitalize on the established reputation and proven effectiveness of existing tools. This approach allows them to hit the ground running with a mature and tested toolkit.
    2. Strategic Evolution: The use of another group’s source code isn’t merely a copy-paste endeavor. Groups like Hunters International strategically evolve and adapt the code to suit their specific operational goals and tactics, as seen in their shift from data encryption to data exfiltration.
    3. Rapid Deployment and Learning Curve: Leveraging existing ransomware code reduces the development time and technical learning curve. This enables new or rebranded groups to deploy sophisticated attacks much faster than if they were developing their tools from scratch.
    4. Collaborative and Competitive Nature: The ransomware ecosystem operates both collaboratively and competitively. While groups may share, sell, or acquire code, they also compete for targets and reputation within the dark web community. This dynamic fosters continuous innovation and adaptation among these groups.
    5. Challenge for Cybersecurity: This trend poses a significant challenge for cybersecurity professionals and organizations. The ability of ransomware groups to quickly adapt and evolve using existing resources means that defense strategies must be equally agile and proactive, focusing on both prevention and rapid response to emerging threats.

    Mitigating Ransomware Risks

    1. Advanced Security Measures: Organizations should adopt comprehensive ransomware mitigation solutions, extending beyond conventional backup strategies.
    2. Network Segmentation and Regular Audits: Segmentation can limit internal movement post-breach, while routine security audits help identify and fix vulnerabilities.
    3. Access Control and Employee Training: Regular access reviews and employee awareness programs are crucial to prevent unauthorized data access and recognize phishing attempts.

    Conclusion

    In conclusion, the use of other groups’ source code by ransomware entities like Hunters International underscores the need for continuous vigilance and adaptation in cybersecurity strategies. With the popularity of ransomware comes constant innovation, and the existence of groups like Hunters International that are able to constantly build off of existing ransomware strategy requires a constantly adapting field of network defenders.

    How Can Netizen Help?

    Netizen ensures that security gets built-in and not bolted-on. Providing advanced solutions to protect critical IT infrastructure such as the popular “CISO-as-a-Service” wherein companies can leverage the expertise of executive-level cybersecurity professionals without having to bear the cost of employing them full time. 

    We also offer compliance support, vulnerability assessments, penetration testing, and more security-related services for businesses of any size and type. 

    Additionally, Netizen offers an automated and affordable assessment tool that continuously scans systems, websites, applications, and networks to uncover issues. Vulnerability data is then securely analyzed and presented through an easy-to-interpret dashboard to yield actionable risk and compliance information for audiences ranging from IT professionals to executive managers.

    Netizen is an ISO 27001:2013 (Information Security Management), ISO 9001:2015, and CMMI V 2.0 Level 3 certified company. We are a proud Service-Disabled Veteran-Owned Small Business that is recognized by the U.S. Department of Labor for hiring and retention of military veterans. 

    Questions or concerns? Feel free to reach out to us any time – 

    https://www.netizen.net/contact

  • Netizen: Threat Detection and Advisory on Confluence Vulnerability CVE-2023-22518

    The discovery of CVE-2023-22518 presents a significant concern for organizations using Confluence Data Center and Server. Atlassian has granted the vulnerability a 10/10 CVSS score based on an internal assessment, however the NVD has yet to provide a score. This is the second major vulnerability discovered in Atlassian Confluence over the past few weeks; CVE-2023-22515, which the NVD rated a 9.8/10 on the CVSS v3.1 scale, is a broken access control bug that’s been generating major concern throughout the cybersecurity community over the past few weeks. Exploitation of Improper Authorization Vulnerability CVE-2023-22518 “allows an unauthenticated attacker to reset Confluence and create a Confluence instance administrator account,” according to the NVD’s summary. Using said account, attackers can perform all tasks typically available to an administrator, leading to a full compromisation of the CIA triad. Atlassian, the company behind Confluence, has acknowledged the vulnerability and released patches to address the issue.

    Threat Detection

    Signs of a potential compromise include:

    • Loss of login access.
    • Suspicious requests to /json/setup-restore* endpoints in access logs.
    • Installation of unknown plugins, particularly any named web.shell.Plugin.
    • Encrypted files or corrupted data.
    • Unusual entries in the confluence-administrators group or newly created user accounts

    Rapid7 Managed Detection and Response also created a list of indicators of compromise associated with the exploitation of CVE-2023-22518:

    IP addresses:

    • 193.176.179[.]41
    • 193.43.72[.]11
    • 45.145.6[.]112

    Domains:
    j3qxmk6g5sk3zw62i2yhjnwmhm55rfz47fdyfkhaithlpelfjdokdxad[.]onion

    File hashes:

    • Bat file: /tmp/agttydcb.bat – MD5: 81b760d4057c7c704f18c3f6b3e6b2c4
    • ELF ransomware binary: /tmp/qnetd – SHA256: 4ed46b98d047f5ed26553c6f4fded7209933ca9632b998d265870e3557a5cdfe

    Ransom note: read-me3.txt

    If you detect any of these indicators, assume that your instance has been compromised and enact your security incident response plan.

    Advisory and Immediate Action Steps

    On discovering the vulnerability, Atlassian’s Chief Information Security Officer issued a statement urging immediate action. Given the potential for significant data loss, it’s critical that organizations utilizing affected Confluence versions respond as soon as possible.

    In order to secure your systems:

    • Patch Immediately: Update to one of the fixed versions provided by Atlassian, which includes 7.19.16, 8.3.4, 8.4.4, 8.5.3, and 8.6.1.
    • Temporary Mitigations: If patching is not feasible immediately, you should:
      • Backup your instance.
      • Remove your instance from public internet access, if possible.
      • Apply interim mitigation measures by blocking specific endpoints (/json/setup-restore.action, /json/setup-restore-local.action, /json/setup-restore-progress.action) at the network layer or by updating the web.xml configuration file in your Confluence installation.

    For more information on CVE 2023-22518, refer to the NVD entry and Atlassian’s report on the vulnerability.

    How Can Netizen Help?

    Netizen ensures that security gets built-in and not bolted-on. Providing advanced solutions to protect critical IT infrastructure such as the popular “CISO-as-a-Service” wherein companies can leverage the expertise of executive-level cybersecurity professionals without having to bear the cost of employing them full time. 

    We also offer compliance support, vulnerability assessments, penetration testing, and more security-related services for businesses of any size and type. 

    Additionally, Netizen offers an automated and affordable assessment tool that continuously scans systems, websites, applications, and networks to uncover issues. Vulnerability data is then securely analyzed and presented through an easy-to-interpret dashboard to yield actionable risk and compliance information for audiences ranging from IT professionals to executive managers.

    Netizen is an ISO 27001:2013 (Information Security Management), ISO 9001:2015, and CMMI V 2.0 Level 3 certified company. We are a proud Service-Disabled Veteran-Owned Small Business that is recognized by the U.S. Department of Labor for hiring and retention of military veterans. 

    Questions or concerns? Feel free to reach out to us any time – 

    https://www.netizen.net/contact

  • CVSS v4.0 is Public: What do you need to know about it?

    The Common Vulnerability Scoring System (CVSS) serves as a standard for assessing the severity of computer system security vulnerabilities. Its latest iteration, CVSS version 4.0, was originally shown in a public preview on June 8, 2023, at the 35th Annual FIRST Conference in Montreal, and was officially launched in General Availability (GA) on November 1st, 2023. With its release come numerous changes that seek to improve upon shortcomings from the previous edition CVSS v3.1. CVSS v4.0’s updates to the vulnerability scoring system include new nomenclature to reflect comprehensive scoring, a streamlined approach to threat metrics, refined user interaction details, and the retirement of the Scope metric for clearer impact assessments. Additionally, it offers cross-sector guidance and the ability to support multiple scores for varied industry challenges. These enhancements aim to improve the precision, clarity, and applicability of the CVSS framework.

    The figure above from Qualys highlights the differences between CVSS v3.1 vs CVSS v4.0

    What’s Changed in CVSS v4.0?

    Nomenclature Adjustment for Clearer Metric Representation

    CVSS v4.0 addresses the misconception that the overall CVSS score is synonymous with the Base Score. The new nomenclature — CVSS-B for Base metrics, CVSS-BE for Base and Environmental metrics, CVSS-BT for Base and Threat metrics, and CVSS-BTE for the combination of all three — highlights the importance of considering all aspects of a vulnerability rather than just base metrics. This change aids in a more comprehensive vulnerability assessment by encouraging consideration of the environmental and threat-related aspects that affect severity.

    Threat Metrics Overhaul for Simplification and Relevance

    The transition from Temporal to Threat Metrics represents a significant overhaul. By retiring the Remediation Level and Report Confidence metrics and consolidating the Exploit Code Maturity values into a single “Attacked” value, CVSS v4.0 simplifies the metric group and enhances its relevance. This consolidation aims to provide a more straightforward approach to assessing threats, focusing on the actual exploitation of vulnerabilities rather than future exploit potential.

    Enhanced User Interaction Metric for Detailed Exploit Context

    The User Interaction (UI) metric in CVSS v4.0 now differentiates between Passive (requiring minimal or no user interaction) and Active (requiring deliberate action) user involvement. This distinction is crucial as it affects the likelihood of an exploit’s success. By offering a granular view of user interaction, organizations can better gauge the need for user education and awareness in preventing security breaches.

    Retirement of the Scope Metric for Consistent Scoring

    The retirement of the Scope (S) metric is a move made in order to eliminate inconsistencies that arose from its ambiguous nature. CVSS v4.0 replaces it with two distinct sets of impact metrics: one for the vulnerable system (VC, VI, VA) and one for subsequent systems (SC, SI, SA). This change ensures a clearer and more consistent assessment of the impact on both the directly vulnerable system and any affected collateral systems.

    Additional Guidance for Cross-Sector Vulnerability Assessment

    CVSS v4.0 extends beyond a one-size-fits-all approach by offering additional guidance in order to produce consistent scores across different industry sectors and supporting multiple scores for the same vulnerability when it affects various products, platforms, or operating systems. This is a forward-thinking move that acknowledges the complex and varied nature of the digital ecosystem.

    Conclusion

    The release of CVSS v4.0 is a significant advancement in the realm of vulnerability scoring. By providing clearer metrics, retiring ambiguous ones, and adding new layers of detail, CVSS v4.0 enhances both the accuracy and clarity of vulnerability assessments. Collective adoption of the CVSS v4.0 scoring system by the cybersecurity community will lead to improved vulnerability assessment and enhance remediation efforts in vulnerable systems. For more information on CVSS v4.0, refer to the official documentation on the First website.

    How Can Netizen Help?

    Netizen ensures that security gets built-in and not bolted-on. Providing advanced solutions to protect critical IT infrastructure such as the popular “CISO-as-a-Service” wherein companies can leverage the expertise of executive-level cybersecurity professionals without having to bear the cost of employing them full time. 

    We also offer compliance support, vulnerability assessments, penetration testing, and more security-related services for businesses of any size and type. 

    Additionally, Netizen offers an automated and affordable assessment tool that continuously scans systems, websites, applications, and networks to uncover issues. Vulnerability data is then securely analyzed and presented through an easy-to-interpret dashboard to yield actionable risk and compliance information for audiences ranging from IT professionals to executive managers.

    Netizen is an ISO 27001:2013 (Information Security Management), ISO 9001:2015, and CMMI V 2.0 Level 3 certified company. We are a proud Service-Disabled Veteran-Owned Small Business that is recognized by the U.S. Department of Labor for hiring and retention of military veterans. 

    Questions or concerns? Feel free to reach out to us any time – 

    https://www.netizen.net/contact