Malicious LSASS Memory Dump via Rundll32 and Comsvcs MiniDump
- Product
- windows
- Category
- process_creation
- Author
- HuntRule
- Published
- 2026-09-30
- Updated
- 2026-09-30
ATT&CK techniques
Cred AccessRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects rundll32.exe invoking comsvcs.dll MiniDump to dump process memory, the classic LSASS credential-theft technique that remained in use across the 2025 intrusions Huntress reviewed. Dumping LSASS extracts cached credentials and Kerberos material for lateral movement. The combination of comsvcs.dll and the MiniDump export from rundll32 has virtually no legitimate use on endpoints.
Reporting behind it
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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