Malicious COM Hijacking via Twinapi CLSID InprocServer32 Registration

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 registration of the twinapi.dll CLSID InprocServer32 under HKCU, a COM hijacking technique used by the ForumTroll APT to load the Dante spyware. By pointing a per-user CLSID to a malicious DLL, the attacker forces trusted processes to load their code whenever the hijacked COM object is instantiated. This provides stealthy persistence and execution without touching HKLM.

Reporting behind it

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Malicious COM Hijacking via Twinapi CLSID InprocServer32 Registration

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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