{"id":"0c718a5e-4284-4fb9-b4d9-b9a50b3a1974","title":"Invoke-Obfuscation STDIN+ Launcher - Security","description":"Detects Obfuscated use of stdin to execute PowerShell","author":"Jonathan Cheong, oscd.community","status":"test","level":"high","date":"2020-10-15","modified":"2022-11-29","tags":["attack.stealth","attack.t1027","attack.execution","attack.t1059.001"],"technique_ids":["T1027","T1059.001"],"logsource":{"product":"windows","service":"security","definition":"The 'System Security Extension' audit subcategory need to be enabled to log the EID 4697"},"falsepositives":["Unknown"],"references":["https://github.com/SigmaHQ/sigma/issues/1009"],"source_path":"rules/windows/builtin/security/win_security_invoke_obfuscation_stdin_services_security.yml","source_sha256":"c942c79170a4ef4dd87d584f2aad2d5c6ec74daee8de1b59867758dc16832ac0","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/builtin/security/win_security_invoke_obfuscation_stdin_services_security.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Invoke-Obfuscation STDIN+ Launcher - Security\nid: 0c718a5e-4284-4fb9-b4d9-b9a50b3a1974\nrelated:\n    - id: 72862bf2-0eb1-11eb-adc1-0242ac120002\n      type: derived\nstatus: test\ndescription: Detects Obfuscated use of stdin to execute PowerShell\nreferences:\n    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task 25)\nauthor: Jonathan Cheong, oscd.community\ndate: 2020-10-15\nmodified: 2022-11-29\ntags:\n    - attack.stealth\n    - attack.t1027\n    - attack.execution\n    - attack.t1059.001\nlogsource:\n    product: windows\n    service: security\n    definition: The 'System Security Extension' audit subcategory need to be enabled to log the EID 4697\ndetection:\n    selection:\n        EventID: 4697\n        ServiceFileName|contains|all:\n            - 'cmd'\n            - 'powershell'\n    selection2:\n        ServiceFileName|contains:\n            - '${input}'\n            - 'noexit'\n    selection3:\n        ServiceFileName|contains:\n            - ' /c '\n            - ' /r '\n    condition: all of selection*\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1027","id":"T1027","name":"Obfuscated Files or Information","page":"techniques/enterprise/T1027/"},{"key":"enterprise/T1059.001","id":"T1059.001","name":"PowerShell","page":"techniques/enterprise/T1059.001/"}],"data_path":"data/detection-rules/0c718a5e-4284-4fb9-b4d9-b9a50b3a1974.json","kind":"sigma"}