Malicious LSASS Memory Dump via Rundll32 comsvcs.dll MiniDump

ATT&CK techniques

Cred Access

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
- T1003.001LSASS Memory
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects rundll32.exe invoking the comsvcs.dll MiniDump export to dump process memory, a LOLBIN LSASS dumping technique documented by Huntress. Attackers first resolve the LSASS process id via tasklist and then dump its memory to harvest plaintext credentials and hashes. Because comsvcs MiniDump has no legitimate administrative use, this is a high-confidence credential-theft signal.

Reporting behind it

Related detections9 linkedT1003.001 — drag to rearrange

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Suspicious LSASS Memory Dump via Procdump Process Creation

Malicious LSASS Memory Dump via procdump

Suspicious LSASS Process Enumeration via tasklist Filter

Malicious LSASS Memory Dump via Rundll32 comsvcs.dll MiniDump

Pivot detection · T1003.001 · 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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