Trusted DesignA masqueraded scheduled task alert triggered an aggressive threat hunt that uncovered a complete FakeAgent intrusion campaign within ten minutes using an automated threat hunting agent. The campaign leveraged malvertising on Bing to distribute trojanized Claude Desktop installers hosted on legitimate Anthropic infrastructure. The attack chain featured DLL sideloading via Java Chromium Embedded Framework, Microsoft Defender tampering, scheduled task persistence masquerading as Microsoft Edge updates, and blockchain-based command-and-control infrastructure using EtherHiding techniques. The hunting agent executed correlated queries across multiple kill chain phases simultaneously, providing confidence-scored findings that enabled rapid validation and remediation. The intrusion delivered SectopRAT malware with infostealing and remote desktop capabilities, requiring full endpoint reimaging and credential resets.
Created: 2026-08-26
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