Sigma rule: PowerShell Get-Process LSASS

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-2ed5637b4418, updated 2023-01-05T00:00:00.000Z.

Rule

Title
PowerShell Get-Process LSASS
Status
test
Level
high
Author
Florian Roth (Nextron Systems)
Date
2021-04-23
Modified
2023-01-05
File
rules/windows/process_creation/proc_creation_win_powershell_getprocess_lsass.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects a "Get-Process" cmdlet and it's aliases on lsass process, which is in almost all cases a sign of malicious activity

Log source

product
windows
category
process_creation

Detection

selection:
    CommandLine|contains:
        # You can add more permutation as you see fit
        - 'Get-Process lsas'
        - 'ps lsas'
        - 'gps lsas'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.credential-access
  • attack.t1552.004

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_powershell_getprocess_lsass.yml

Sources and licences

  • SigmaHQ

    "PowerShell Get-Process LSASS" by Florian Roth (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_powershell_getprocess_lsass.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: PowerShell Get-Process LSASS",
entity page, dataset version ref-2ed5637b4418, updated 2023-01-05T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/b2815d0d-7481-4bf0-9b6c-a4c48a94b349 (accessed 2026-11-03).
Underlying source: SigmaHQ rule b2815d0d-7481-4bf0-9b6c-a4c48a94b349, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.