LSASS dump
Detects LSASS memory dumping for offline credential extraction — the comsvcs.dll MiniDump export, procdump against lsass, or known dumpers…
What it detects
Detects LSASS memory dumping for offline credential extraction — the comsvcs.dll MiniDump export, procdump against lsass, or known dumpers (nanodump/dumpert). A dump of LSASS is a strong precursor to credential theft and lateral movement.
MITRE ATT&CK mapping
- T1003.001OS Credential Dumping: LSASS Memory· Credential Access
False positives and triage
Legitimate crash tooling and EDR can snapshot LSASS. Confirm the invoking user, the parent process, and where the dump file was written and exfiltrated. procdump against non-lsass processes is not flagged.
The rule
Declarative YAML read by the detection engine — data, never executed. Confidence 80%. Source: rules/windows/lsass_credential_dump.yaml, licensed under the Apache License 2.0.
id: windows.credential.lsass_dump
version: 1.0.0
status: stable
severity: critical
confidence: 0.8
platforms: [windows]
mitre_techniques: [T1003.001]
description: |
Detects LSASS memory dumping for offline credential extraction — the comsvcs.dll
MiniDump export, procdump against lsass, or known dumpers (nanodump/dumpert). A dump
of LSASS is a strong precursor to credential theft and lateral movement.
match:
event_category_any: [process, script]
command_line_contains_any:
- "comsvcs.dll, minidump"
- "comsvcs.dll,minidump"
- "minidump lsass"
- "-ma lsass"
- "lsass.dmp"
- "nanodump"
- "dumpert"
false_positive_guidance: |
Legitimate crash tooling and EDR can snapshot LSASS. Confirm the invoking user, the parent
process, and where the dump file was written and exfiltrated. procdump against non-lsass
processes is not flagged.
Related detections
Run this rule on your own logs — offline
KIROSEC runs this rule and the rest of the library over Windows, Linux, macOS and cloud audit logs on the analyst's own machine. Every alert links to the events that raised it, and nothing leaves the device.