{"id":"9ac8b09b-45de-4a07-9da1-0de8c09304a3","title":"Invoke-Obfuscation STDIN+ Launcher - PowerShell Module","description":"Detects Obfuscated use of stdin to execute PowerShell","author":"Jonathan Cheong, oscd.community","status":"test","level":"high","date":"2020-10-15","modified":"2024-04-05","tags":["attack.stealth","attack.t1027","attack.execution","attack.t1059.001"],"technique_ids":["T1027","T1059.001"],"logsource":{"product":"windows","category":"ps_module","definition":"0ad03ef1-f21b-4a79-8ce8-e6900c54b65b"},"falsepositives":["Unknown"],"references":["https://github.com/SigmaHQ/sigma/issues/1009"],"source_path":"rules/windows/powershell/powershell_module/posh_pm_invoke_obfuscation_stdin.yml","source_sha256":"d3fe67293d5db803ebbb1c474b7dca546a46240fe65daec8b43e5b160e69fa9e","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/powershell/powershell_module/posh_pm_invoke_obfuscation_stdin.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 - PowerShell Module\nid: 9ac8b09b-45de-4a07-9da1-0de8c09304a3\nrelated:\n    - id: 779c8c12-0eb1-11eb-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: 2024-04-05\ntags:\n    - attack.stealth\n    - attack.t1027\n    - attack.execution\n    - attack.t1059.001\nlogsource:\n    product: windows\n    category: ps_module\n    definition: 0ad03ef1-f21b-4a79-8ce8-e6900c54b65b\ndetection:\n    selection_4103:\n        Payload|re: 'cmd.{0,5}(?:/c|/r).+powershell.+(?:\\$\\{?input\\}?|noexit).+\"'\n    condition: selection_4103\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/9ac8b09b-45de-4a07-9da1-0de8c09304a3.json","kind":"sigma"}