Malicious LSASS Memory Dump via dllhost with comsvcs MiniDump Arguments (via process_creation)

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 dllhost.exe dumping LSASS memory using comsvcs-style MiniDump arguments, the credential-theft step observed in the intrusion where a CLFS zero-day was exploited before ransomware deployment. Adversaries dump LSASS to c:\programdata to harvest credentials for lateral movement ahead of encryption, so dllhost invoking a MiniDump against lsass is a high-confidence credential-access indicator.

Reporting behind it

Related detections9 linkedT1003.001 — drag to rearrange

Malicious LSASS Credential Dump via ProcDump (via process_creation)

Malicious LSASS Memory Dump via comsvcs.dll by Salt Typhoon

Malicious LSASS Dump via Process Access (via process_access)

Malicious LSASS Credential Dump with LSASSY - Process (via process_creation)

Malicious LSASS Credential Dump with LSASSY - Admin Share (via security)

Malicious Task Manager Used for LSASS Dump - Kernel (via security)

Suspicious LSASS Credential Dump with LSASSY - PowerShell (via powershell)

Malicious LSASS Credential Dump with LSASSY - Kernel Access (via security)

Malicious LSASS Memory Access From a Non-System Process (via process_access)

Malicious LSASS Memory Dump via dllhost with comsvcs MiniDump Arguments (via process_creation)

Pivot detection · T1003.001 · 9 related

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