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
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