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New Mirai botnet targets TBK DVRs by exploiting CVE-2024-3721

Security Affairs

A new variant of the Mirai botnet exploits CVE-2024-3721 to target DVR systems, using a new infection method. Researchers from Russian cybersecurity firm Kaspersky discovered a new variant of the Mirai botnet that exploits a command injection vulnerability ( CVE-2024-3721 ) in TBK DVR-4104 and DVR-4216 digital video recording devices.

IoT 138
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AMD fixed a flaw that allowed to load malicious microcode

Security Affairs

Researchers from Google disclosed an improper signature verification vulnerability, tracked asCVE-2024-56161 (CVSS score of 7.2), in AMD’s Secure Encrypted Virtualization (SEV). AMD released a microcode and SEV firmware update to address the issue, requiring a BIOS update and reboot for attestation verification.

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Ghost Ransomware a Persistent Global Threat to Critical Infrastructure

SecureWorld News

Ghost ransomware actors, identified as operating from China, have been targeting unpatched systems and stolen credentials to infiltrate networks, encrypt data, and demand ransom payments. Stolen credentials remain the top breach factor, responsible for 24% of incidents in 2024.

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Cybersecurity in Aviation: Rising Threats and Modernization Efforts

SecureWorld News

Much of the industry still relies on legacy operational tech (OT) systems that lack modern security features such as automated patch management and encryption by default. In July 2024, Delta Air Lines experienced a catastrophic IT outage when a faulty software update from cybersecurity vendor CrowdStrike crashed approximately 8.5

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A new Mirai botnet variant targets DigiEver DS-2105 Pro DVRs

Security Affairs

The experts pointed out that this Mirai variant has been modified to use improved encryption algorithms. “Further investigation into this campaign revealed a new botnet that calls itself the Hail C**k Botnet thats been active since at least September 2024.” ” reads the analysis published by Akamai. in newer ones.

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Enhanced capabilities sustain the rapid growth of Vo1d botnet

Security Affairs

In September 2024, Doctor Web researchers uncovered a malware, tracked as Vo1d , that infected nearly 1.3 In August 2024, several users reported that Dr.Web antivirus detected changes in their TV box system files. Vo1d botnet has enhanced its stealth and resilience with RSA encryption to secure communication, preventing C2 takeover.

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Analysis of the latest Mirai wave exploiting TBK DVR devices with CVE-2024-3721

SecureList

We recently observed the use of CVE-2024-3721 in attempts to deploy a bot in one of our honeypot services. Exploitation During a review of the logs in our Linux honeypot system, we noticed an unusual request line linked to a CVE-2024-3721. The RC4 key is encrypted with XOR.

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