Powershell Keylogging

calendar Oct 23, 2025 · attack.credential-access attack.collection attack.t1056.001  ·
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Adversaries may log user keystrokes to intercept credentials as the user types them.

Sigma rule (View on GitHub)

 1title: Powershell Keylogging
 2id: 34f90d3c-c297-49e9-b26d-911b05a4866c
 3status: test
 4description: Adversaries may log user keystrokes to intercept credentials as the user types them.
 5references:
 6    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md
 7    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1056.001/src/Get-Keystrokes.ps1
 8author: frack113
 9date: 2021-07-30
10modified: 2022-07-11
11tags:
12    - attack.credential-access
13    - attack.collection
14    - attack.t1056.001
15logsource:
16    product: windows
17    category: ps_script
18    definition: 'Requirements: Script Block Logging must be enabled'
19detection:
20    selection_basic:
21        ScriptBlockText|contains: 'Get-Keystrokes'
22    selection_high: # want to run in background and keyboard
23        ScriptBlockText|contains|all:
24            - 'Get-ProcAddress user32.dll GetAsyncKeyState'
25            - 'Get-ProcAddress user32.dll GetForegroundWindow'
26    condition: 1 of selection_*
27falsepositives:
28    - Unknown
29level: medium

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