{"id":"cacef8fc-9d3d-41f7-956d-455c6e881bc5","title":"Potential RemoteFXvGPUDisablement.EXE Abuse - PowerShell ScriptBlock","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.","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"high","date":"2023-05-09","modified":"","tags":["attack.stealth","attack.t1218"],"technique_ids":["T1218"],"logsource":{"product":"windows","category":"ps_script","definition":"bade5735-5ab0-4aa7-a642-a11be0e40872"},"falsepositives":["Unknown"],"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"],"source_path":"rules/windows/powershell/powershell_script/posh_ps_remotefxvgpudisablement_abuse.yml","source_sha256":"653f1056b116014021db055660a91414ec1fa249f1aca176a0fcb3d7bf3ffca6","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/powershell/powershell_script/posh_ps_remotefxvgpudisablement_abuse.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Potential RemoteFXvGPUDisablement.EXE Abuse - PowerShell ScriptBlock\nid: cacef8fc-9d3d-41f7-956d-455c6e881bc5\nrelated:\n    - id: a6fc3c46-23b8-4996-9ea2-573f4c4d88c5 # ProcCreation\n      type: similar\n    - id: f65e22f9-819e-4f96-9c7b-498364ae7a25 # PS Classic\n      type: similar\n    - id: 38a7625e-b2cb-485d-b83d-aff137d859f4 # PS Module\n      type: similar\nstatus: test\ndescription: 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.\nreferences:\n    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md\n    - https://github.com/redcanaryco/AtomicTestHarnesses/blob/7e1e4da116801e3d6fcc6bedb207064577e40572/TestHarnesses/T1218_SignedBinaryProxyExecution/InvokeRemoteFXvGPUDisablementCommand.ps1\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2023-05-09\ntags:\n    - attack.stealth\n    - attack.t1218\nlogsource:\n    product: windows\n    category: ps_script\n    definition: bade5735-5ab0-4aa7-a642-a11be0e40872\ndetection:\n    selection:\n        ScriptBlockText|startswith: 'function Get-VMRemoteFXPhysicalVideoAdapter {'\n    condition: selection\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1218","id":"T1218","name":"System Binary Proxy Execution","page":"techniques/enterprise/T1218/"}],"data_path":"data/detection-rules/cacef8fc-9d3d-41f7-956d-455c6e881bc5.json","kind":"sigma"}