Suspicious LSASS Process Enumeration via tasklist Filter

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 tasklist being filtered for the lsass process, a reconnaissance step used before credential dumping in the 2025 NTLM abuse activity. Attackers query tasklist and filter for lsass to obtain its process id ahead of a memory dump. While administrators occasionally enumerate processes, specifically targeting lsass by name is a suspicious precursor to credential access.

Reporting behind it

Related detections9 linkedT1003.001 — drag to rearrange

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Malicious LSASS Credential Extraction via Mimikatz sekurlsa

Malicious LSASS Memory Dump via Comsvcs MiniDump

Malicious Credential Dumping via Mimikatz Sekurlsa Command (via process_creation)

Malicious Credential Theft via Mimikatz Command Line (via process_creation)

Suspicious LSASS Memory Dump via Renamed ProcDump (via process_creation)

Malicious Restricted Admin Mode Enabled for Pass-the-Hash RDP

Malicious LSASS Memory Dump via Rundll32 and Comsvcs MiniDump

Suspicious LSASS Process Enumeration via tasklist Filter

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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