{"id":"487c7524-f892-4054-b263-8a0ace63fc25","title":"Invoke-Obfuscation Via Stdin - System","description":"Detects Obfuscated Powershell via Stdin in Scripts","author":"Nikita Nazarov, oscd.community","status":"test","level":"high","date":"2020-10-12","modified":"2022-11-29","tags":["attack.stealth","attack.t1027","attack.execution","attack.t1059.001"],"technique_ids":["T1027","T1059.001"],"logsource":{"product":"windows","service":"system"},"falsepositives":["Unknown"],"references":["https://github.com/SigmaHQ/sigma/issues/1009"],"source_path":"rules/windows/builtin/system/service_control_manager/win_system_invoke_obfuscation_via_stdin_services.yml","source_sha256":"499990b0f06c96c08b6bd84da2a5a5ebadc0dd98d8cc7d82482cde4f4190b99e","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/builtin/system/service_control_manager/win_system_invoke_obfuscation_via_stdin_services.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 Via Stdin - System\nid: 487c7524-f892-4054-b263-8a0ace63fc25\nstatus: test\ndescription: Detects Obfuscated Powershell via Stdin in Scripts\nreferences:\n    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task28)\nauthor: Nikita Nazarov, oscd.community\ndate: 2020-10-12\nmodified: 2022-11-29\ntags:\n    - attack.stealth\n    - attack.t1027\n    - attack.execution\n    - attack.t1059.001\nlogsource:\n    product: windows\n    service: system\ndetection:\n    selection:\n        Provider_Name: 'Service Control Manager'\n        EventID: 7045\n        # ImagePath|re: '(?i)(set).*&&\\s?set.*(environment|invoke|\\${?input).*&&.*\"'\n        ImagePath|contains|all:\n            - 'set'\n            - '&&'\n        ImagePath|contains:\n            - 'environment'\n            - 'invoke'\n            - 'input'\n    condition: 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/487c7524-f892-4054-b263-8a0ace63fc25.json","kind":"sigma"}