Malicious Sednit COM Hijacking Persistence via InprocServer32

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 COM hijacking where a per-user CLSID InprocServer32 key is pointed at the Sednit loader DLLs eapphost.dll or tcpiphlpsvc.dll used by the SlimAgent and BeardShell implants. The DLL names impersonate legitimate Windows components while the HKCU CLSID registration hijacks object loading for stealthy persistence.

Reporting behind it

Related detections9 linkedT1546.015 — drag to rearrange

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Suspicious COM Hijack Via InprocServer32 Modification

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Suspicious dllhost.exe Spawned with CLSID and Anomalous Parent (via process_creation)

Suspicious COM Handler Hijack of MsCtfMonitor CLSID via CharmingCypress

Malicious COM Hijack of PSFactoryBuffer InprocServer32

Malicious APT-C-60 COM Hijack via SpyGlace CLSID InProcServer32 (via registry_set)

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

Malicious COM Object Hijack Pointing to a User-Writable DLL (via registry_set)

Malicious Sednit COM Hijacking Persistence via InprocServer32

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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