Potential Credential Dumping Attempt Via PowerShell Remote Thread — Sigma Rule

Rule metadata and linked tags

Author: oscd.community, Natalia Shornikova. Source status: test; severity: high. Source dates: 2020-10-06 / 2022-12-18.

{
  "product": "windows",
  "category": "create_remote_thread"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 4d71f0599999a0af75662772f3788b9d3baf41189b57c89755af3692a905925f

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Potential Credential Dumping Attempt Via PowerShell Remote Thread
id: fb656378-f909-47c1-8747-278bf09f4f4f
related:
    - id: 3f07b9d1-2082-4c56-9277-613a621983cc
      type: obsolete
    - id: 0f920ebe-7aea-4c54-b202-9aa0c609cfe5
      type: similar
status: test
description: Detects remote thread creation by PowerShell processes into "lsass.exe"
references:
    - https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse
author: oscd.community, Natalia Shornikova
date: 2020-10-06
modified: 2022-12-18
tags:
    - attack.credential-access
    - attack.t1003.001
logsource:
    product: windows
    category: create_remote_thread
detection:
    selection:
        SourceImage|endswith:
            - '\powershell.exe'
            - '\pwsh.exe'
        TargetImage|endswith: '\lsass.exe'
    condition: selection
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse