Possible Process Injection Target RegAsm Launched Without Arguments via Process Creation

ATT&CK techniques

Priv Esc → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
- T1055Process Injection
- T1055.012Process Hollowing
Defense Evasion
- T1055Process Injection
- T1055.012Process Hollowing
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects RegAsm.exe from the .NET Framework directory started with no command-line arguments, a state characteristic of a hollowed or injected host process rather than legitimate assembly registration. Lumma Stealer distributed through fake Hamster Kombat lures injects its payload into RegAsm.exe to run under a trusted signed binary. This indicates likely process injection and stealer execution.

Reporting behind it

Related detections9 linkedT1055 — drag to rearrange

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Possible Process Injection Target RegAsm Launched Without Arguments via Process Creation

Pivot detection · T1055 · 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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