Dissecting a PHP web server rootkit


SophosLabs recently acquired a Linux implant associated with compromised BIG-IP Access Policy Management (APM) environments that use Apache and PHP components. The malware demonstrates advanced techniques including custom ELF loading, function hooking, and runtime code patching to evade detection while maintaining persistent access through hidden web shells.

The implant delivers a familiar outcome – on-demand server‑side code execution commonly associated with web shells – but implements it using deeper Linux- and Apache‑specific tradecraft.

Read more…
Source:  Sophos News


Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox


Related:

  • Google Chrome AI extensions deliver info-stealing malware in broad attack

    January 9, 2025

    Small businesses and boutique organizations should use caution when leaning on browser-friendly artificial intelligence (AI) tools to generate ideas, content, and marketing copy, as a set of Google Chrome extensions were recently compromised to deliver info-stealing malware disguised as legitimate updates. Analyzed by researchers at Extension Total, the cybercriminal campaign has managed to take over the ...

  • Active Exploitation of Zero-Day Vulnerability in Ivanti Connect Secure

    January 9, 2025

    CVE-2025-0282 is a ‘stack-based buffer overflow’ vulnerability with a CVSSv3 score of 9.0. If exploited, a remote unauthenticated attacker could execute arbitrary code (ACE). CVE-2025-0283 is a ‘stack-based buffer overflow’ vulnerability with a CVSSv3 score of 7.0. If exploited, a local authenticated attacker could escalate their privileges. Affected organisations must review the Ivanti Security Advisory and ...

  • Japan links Chinese hacker MirrorFace to dozens of cyberattacks targeting security and tech data

    January 8, 2025

    Japan on Wednesday linked more than 200 cyberattacks over the past five years targeting the country’s national security and high technology data to a Chinese hacking group, MirrorFace, detailing their tactics and calling on government agencies and businesses to reinforce preventive measures. MirrorFace sent emails with attachments containing malware to targeted organizations and individuals to view ...

  • Enhancing Botnet Detection with AI using LLMs and Similarity Search

    January 8, 2025

    As botnets continue to evolve, so do the techniques required to detect them. While Transport Layer Security (TLS) encryption is widely adopted for secure communications, botnets leverage TLS to obscure command-and-control (C2) traffic. These malicious actors often have identifiable characteristics embedded within their TLS certificates, opening a potential pathway for advanced detection techniques. In first-of-its-kind research, ...

  • Multiple Vulnerabilities in SonicOS

    January 8, 2025

    SonicWall has released a security advisory to address three high severity vulnerabilities and one medium severity vulnerability in SonicOS. SonicWall appliances are security appliances that provide virtual private network (VPN) and ‘next-gen’ firewall capabilities. Read more… Source: NHS Digital Sign up for our Newsletter Related:

  • AI-supported spear phishing fools more than 50% of targets

    January 7, 2025

    One of the first things everyone predicted when artificial intelligence (AI) became more commonplace was that it would assist cybercriminals in making their phishing campaigns more effective. Now, researchers have conducted a scientific study into the effectiveness of AI supported spear phishing, and the results line up with everyone’s expectations: AI is making it easier to ...