{"id":"c8557060-9221-4448-8794-96320e6f3e74","title":"Windows PowerShell User Agent","description":"Detects Windows PowerShell Web Access","author":"Florian Roth (Nextron Systems)","status":"test","level":"medium","date":"2017-03-13","modified":"2021-11-27","tags":["attack.command-and-control","attack.t1071.001"],"technique_ids":["T1071.001"],"logsource":{"category":"proxy"},"falsepositives":["Administrative scripts that download files from the Internet","Administrative scripts that retrieve certain website contents"],"references":["https://msdn.microsoft.com/powershell/reference/5.1/microsoft.powershell.utility/Invoke-WebRequest"],"source_path":"rules/web/proxy_generic/proxy_ua_powershell.yml","source_sha256":"cdb99d489966b9099ccc2c590d9908cad6df21c6ffc4f9eca97d6c25700a29f3","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/web/proxy_generic/proxy_ua_powershell.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Windows PowerShell User Agent\nid: c8557060-9221-4448-8794-96320e6f3e74\nstatus: test\ndescription: Detects Windows PowerShell Web Access\nreferences:\n    - https://msdn.microsoft.com/powershell/reference/5.1/microsoft.powershell.utility/Invoke-WebRequest\nauthor: Florian Roth (Nextron Systems)\ndate: 2017-03-13\nmodified: 2021-11-27\ntags:\n    - attack.command-and-control\n    - attack.t1071.001\nlogsource:\n    category: proxy\ndetection:\n    selection:\n        c-useragent|contains: ' WindowsPowerShell/'\n    condition: selection\nfalsepositives:\n    - Administrative scripts that download files from the Internet\n    - Administrative scripts that retrieve certain website contents\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1071.001","id":"T1071.001","name":"Web Protocols","page":"techniques/enterprise/T1071.001/"}],"data_path":"data/detection-rules/c8557060-9221-4448-8794-96320e6f3e74.json","kind":"sigma"}