Malicious COM Hijack via CLSID InProcServer32 Registry Modification (via registry_set)

ATT&CK techniques

Persistence → Priv Esc

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1546.015Component Object Model Hijacking
Priv Esc
- T1546.015Component Object Model Hijacking
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects a COM hijack targeting the CLSID 2227A280-3AEA-1069-A2DE-08002B30309D by writing to its InProcServer32 registry value. In Operation Phantom Net Voxel APT28 abuses this specific shell folder CLSID so that explorer loads a malicious DLL for persistence and execution. Redirecting this InProcServer32 value to an attacker DLL is a reliable indicator of COM hijacking.

Reporting behind it

Related detections9 linkedT1546.015 — drag to rearrange

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Windows COM CLSID Hijacking via Registry Default InprocServer32/LocalServer32 Modification

Windows Registry COM InProcServer32 Hijack via PSFactory CLSID Default Value

Malicious COM Hijack via CLSID InProcServer32 Registry Modification (via registry_set)

Pivot detection · T1546.015 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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