blue-team-tools/rules/windows/powershell/powershell_script/powershell_keylogging.yml

title: Powershell Keylogging
id: 34f90d3c-c297-49e9-b26d-911b05a4866c
status: experimental
author: frack113
date: 2021/07/30
modified: 2021/10/16
description: Adversaries may log user keystrokes to intercept credentials as the user types them.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1218/T1218.md
    - https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1056.001/src/Get-Keystrokes.ps1
tags:
    - attack.collection
    - attack.t1056.001
logsource:
    product: windows
    category: ps_script
    definition: EnableScriptBlockLogging must be set to enable
detection:
    selection_basic:
        ScriptBlockText|contains: 'Get-Keystrokes'    
    selection_high: # want to run in background and keyboard
        ScriptBlockText|contains|all:
            - 'Get-ProcAddress user32.dll GetAsyncKeyState'
            - 'Get-ProcAddress user32.dll GetForegroundWindow'
    condition: selection_basic or selection_high
falsepositives:
    - Unknown
level: medium