Detection rules › Sigma
LSASS credentials dump via Task Manager (file)
Provides an indicator of a user accessing the task manager in order to eventually dump the LSASS process content using the "Details" tab > right click on "lsass.exe" > Create a dump file.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Credential Access | T1003.001 OS Credential Dumping: LSASS Memory |
Rule body yaml
title: LSASS credentials dump via Task Manager (file)
description: Provides an indicator of a user accessing the task manager in order to eventually dump the LSASS process content using the "Details" tab > right click on "lsass.exe" > Create a dump file.
references:
- https://github.com/mdecrevoisier/EVTX-to-MITRE-Attack/tree/master/TA0006-Credential%20Access/T1003-Credential%20dumping
- https://www.ired.team/offensive-security/credential-access-and-credential-dumping/dump-credentials-from-lsass-process-without-mimikatz
- https://medium.com/@markmotig/some-ways-to-dump-lsass-exe-c4a75fdc49bf
- https://www.microsoft.com/en-us/security/blog/2022/06/13/the-many-lives-of-blackcat-ransomware/
tags:
- attack.credential_access
- attack.t1003.001
author: mdecrevoisier
status: experimental
logsource:
product: windows
category: file_creation # 11
detection:
selection:
Image|endswith: '\taskmgr.exe'
TargetFilename|endswith: '.DMP' # example: C:\Users\Mike\AppData\Local\Temp\lsass (3).DMP
condition: selection
falsepositives:
- None
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
Image|endswith: '\taskmgr.exe'
TargetFilename|endswith: '.DMP'
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
Image | ends_with |
|
TargetFilename | ends_with |
|