Endpoints are critical to the success of cyber attacks. While the definition what an endpoint is, exactly, has shifted over time, the threat has remained the same: Threat actors need a device to spread malware, encrypt assets, and harvest application credentials — they need an endpoint.

Let’s start with the good news. Law enforcement organizations around the world have stepped up their efforts to find, stop, and arrest ransomware operators, shut down dark web markets, and close crypto mixers and tumblers that help threat actors launder their funds.

On February 20, 2024, we published a security bulletin detailing newly disclosed authentication bypass and path traversal vulnerabilities in ConnectWise ScreenConnect. Shortly after the bulletin was sent, ConnectWise updated their security bulletin with IOCs from observed active exploitation of these vulnerabilities. On February 21, 2024, the vulnerabilities were assigned the following CVE numbers.

On February 20, 2024, the National Crime Agency (NCA) of Britain and the Federal Bureau of Investigation (FBI) announced the successful disruption of the Lockbit ransomware gang, marking a significant milestone in the fight against cybercrime. This operation, known as Operation Cronos, was a collaborative effort involving law enforcement agencies from the UK, the US, and several other countries, with support from private sector partners.

As cybercrime evolves, one avenue for attack has risen to prominence across the world: Ransomware. According to Arctic Wolf’s State of Cybersecurity 2023 Trends Report, 48% of organizations view ransomware as the top attack vector concern. A concern comes with just cause, as the Arctic Wolf Labs 2024 Threats Report showed 48.6% of incidents investigated by Arctic Wolf were ransomware attacks.

On February 13, 2024, Microsoft published their February 2024 security update with patches for 73 vulnerabilities. Among these vulnerabilities, Arctic Wolf has highlighted 5 vulnerabilities in this bulletin that were categorized as critical or zero-day vulnerabilities. Two of these vulnerabilities have been reported to be exploited in the wild.

On February 19, 2024, ConnectWise published a security bulletin detailing two critical vulnerabilities within their on-premises ScreenConnect software. At the time of writing, these vulnerabilities do not have CVE numbers assigned to them. ConnectWise has stated that the vulnerabilities have the potential to result in remote code execution (RCE). Vulnerability #1 (CVSS: 10): Allows a threat actor to achieve authentication bypass by leveraging an alternate path/channel.

When it comes to modern systems and networks, identities are the new perimeter. Long gone are the days of singular office-bound systems with a set server room and endpoints that stayed on desks. With the rise of hybrid work models, cloud computing, and rapid digitization in industries like healthcare and manufacturing, it’s a user’s identity that holds increasing power over a network’s function and security.

The education industry isn’t just in the business of teaching students, it’s also responsible for a lot of data, primarily personally identifiable information (PII), making these organizations a major target for threat actors. In March of 2023, Minneapolis Public Schools saw ransomware group Medusa publish current and former students “former student records, parent contacts, home addresses and IDs with pictures.” Unfortunately, this instance isn’t an outlier.

On February 8, 2024, Ivanti publicly disclosed a high-severity authentication bypass vulnerability (CVE-2024-22024) impacting Ivanti Connect Secure, Policy Secure, and ZTA products. CVE-2024-22024 is an XML external entity (XXE) flaw in the SAML component and could allow threat actors to bypass authentication and access certain restricted resources if successfully exploited.

On February 8, 2024, Fortinet’s FortiGuard disclosed two critical vulnerabilities affecting FortiOS. CVE-2024-23113, a format string vulnerability, and CVE-2024-21762, an out-of-bounds write vulnerability, could allow unauthenticated threat actors to execute arbitrary code or commands. FortiGuard has stated they are aware of potential exploitation of CVE-2024-21762.

On February 7, 2024, CISA issued an advisory detailing their discoveries concerning state-sponsored cyber actors linked to the People’s Republic of China (PRC). Notably, the PRC-affiliated threat actor, Volt Typhoon, is actively engaged in efforts to infiltrate IT networks, with the potential aim of launching cyber attacks on vital U.S. infrastructure in the event of a substantial crisis or conflict with the United States.

On January 4, 2024, Atlassian disclosed CVE-2023-22527, a template injection vulnerability affecting Confluence Data Center and Server versions 8.0.0 to 8.5.3. The vulnerability allows for unauthenticated remote code execution to be achieved on affected versions of the software. Arctic Wolf Labs has observed evidence of C3RB3R ransomware, as well as several other malicious payloads, being deployed following exploitation of CVE-2023-22527. We present our preliminary findings here.

On February 2, 2024, AnyDesk confirmed a compromise of its production systems in a security advisory, leading the company to revoke all security-related keys, including the cryptographic code-signing certificate used to publish their software. As an additional precaution, AnyDesk also reset user passwords on the AnyDesk web portal. AnyDesk has started using a new code signing certificate as of AnyDesk version 8.0.8.

Access is everything within a network or system. As organizations race to adopt the cloud, relax rules around permitting workers to use their own devices, and continue to embrace hybrid work models, employees gain unprecedented access to data, allowing them to work from anywhere at any time. But this also creates a vast attack surface that hackers are all too willing to exploit. And helps explain why identity-based attacks are on the rise.

The business world has an identity problem. According to Verizon’s 2023 Data Breach Investigations Report, 74% of all breaches involve the human element, with people involved either through error, privilege misuse, social engineering, or stolen credentials — the latter three of which directly involve the management (and mismanagement) of user identities. Moreover, this percentage stands poised to grow.

On January 31, 2024, Ivanti published an article disclosing two high severity vulnerabilities: CVE-2024-21893: A server-side request forgery flaw present in the SAML component of Ivanti Connect Secure, Ivanti Policy Secure, and Ivanti Neurons. This vulnerability allows an unauthenticated threat actor to access restricted resources. Ivanti reports that a limited number of customers have been affected by this vulnerability.