Microsoft Details Cookie-Controlled PHP Web Shells Persisting via Cron on Linux Servers

Threat actors are increasingly using HTTP cookies as a control channel for PHP-based web shells on Linux servers and to achieve remote code execution, according to findings from the Microsoft Defender Security Research Team. "Instead of exposing command execution through URL parameters or request...

Cookie-controlled PHP webshells: A stealthy tradecraft in Linux hosting environments

In this article 1. Cookie-controlled execution behavior 2. Observed variants of cookie-controlled PHP web shells 3. Mitigation and protection guidance 4. Microsoft Defender XDR detections 5. Microsoft Security Copilot prompts 6. Microsoft Defender XDR threat analytics 7. MITRE ATT&CK™ Techniques...