EggStreme Malware: Unpacking a New APT Framework Targeting a Philippine Military Company

A Chinese APT group compromised a Philippine military company using a new, fileless malware framework called EggStreme. This sophisticated multi-stage toolset achieves persistent, low-profile espionage by injecting malicious code directly into memory and leveraging DLL sideloading. The core component, EggStremeAgent, is a full-featured backdoor enabling extensive system reconnaissance, lateral movement, and data theft via an injected keylogger. The attack begins with EggStremeFuel deploying EggStremeLoader to set up a persistent service, which then executes EggStremeReflectiveLoader to launch EggStremeAgent. The framework's fileless nature and use of legitimate Windows processes make it difficult to detect, posing a significant and persistent threat.

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