Potential RemoteFXvGPUDisablement.EXE Abuse - PowerShell ScriptBlock

Title: Potential RemoteFXvGPUDisablement.EXE Abuse - PowerShell ScriptBlock
Status: test
Description:Detects PowerShell module creation where the module Contents are set to "function Get-VMRemoteFXPhysicalVideoAdapter". This could be a sign of potential abuse of the "RemoteFXvGPUDisablement.exe" binary which is known to be vulnerable to module load-order hijacking.
References:
  -https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md
  -https://github.com/redcanaryco/AtomicTestHarnesses/blob/7e1e4da116801e3d6fcc6bedb207064577e40572/TestHarnesses/T1218_SignedBinaryProxyExecution/InvokeRemoteFXvGPUDisablementCommand.ps1
Author: Nasreddine Bencherchali (Nextron Systems)
Date: 2023-05-09
modified:None
Tags:

• -'attack.stealth'
• -'attack.t1218'

Logsource:

• product: windows
• category: ps_script
• definition: bade5735-5ab0-4aa7-a642-a11be0e40872

Detection:
  selection:
    ScriptBlockText|startswith: 'function Get-VMRemoteFXPhysicalVideoAdapter {'
  condition:selection
Falsepositives:
  -Unknown
Level: high