{"id":"9fc51a3c-81b3-4fa7-b35f-7c02cf10fd2d","title":"Usage Of Web Request Commands And Cmdlets","description":"Detects the use of various web request commands with commandline tools and Windows PowerShell cmdlets (including aliases) via CommandLine","author":"James Pemberton / @4A616D6573, Endgame, JHasenbusch, oscd.community, Austin Songer @austinsonger","status":"test","level":"medium","date":"2019-10-24","modified":"2025-10-20","tags":["attack.execution","attack.t1059.001"],"technique_ids":["T1059.001"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Use of Get-Command and Get-Help modules to reference Invoke-WebRequest and Start-BitsTransfer."],"references":["https://4sysops.com/archives/use-powershell-to-download-a-file-with-http-https-and-ftp/","https://blog.jourdant.me/post/3-ways-to-download-files-with-powershell","https://learn.microsoft.com/en-us/powershell/module/bitstransfer/add-bitsfile?view=windowsserver2019-ps"],"source_path":"rules/windows/process_creation/proc_creation_win_susp_web_request_cmd_and_cmdlets.yml","source_sha256":"9b5307e84a4516ee1dc086db4fdd9d9787673e1631fb51272165990f9da078c1","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_susp_web_request_cmd_and_cmdlets.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Usage Of Web Request Commands And Cmdlets\nid: 9fc51a3c-81b3-4fa7-b35f-7c02cf10fd2d\nrelated:\n    - id: 1139d2e2-84b1-4226-b445-354492eba8ba\n      type: similar\n    - id: f67dbfce-93bc-440d-86ad-a95ae8858c90\n      type: obsolete\n    - id: cd5c8085-4070-4e22-908d-a5b3342deb74\n      type: obsolete\n    - id: 6e897651-f157-4d8f-aaeb-df8151488385\n      type: obsolete\nstatus: test\ndescription: Detects the use of various web request commands with commandline tools and Windows PowerShell cmdlets (including aliases) via CommandLine\nreferences:\n    - https://4sysops.com/archives/use-powershell-to-download-a-file-with-http-https-and-ftp/\n    - https://blog.jourdant.me/post/3-ways-to-download-files-with-powershell\n    - https://learn.microsoft.com/en-us/powershell/module/bitstransfer/add-bitsfile?view=windowsserver2019-ps\nauthor: James Pemberton / @4A616D6573, Endgame, JHasenbusch, oscd.community, Austin Songer @austinsonger\ndate: 2019-10-24\nmodified: 2025-10-20\ntags:\n    - attack.execution\n    - attack.t1059.001\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        CommandLine|contains:\n            - '[System.Net.WebRequest]::create'\n            - 'curl '\n            - 'Invoke-RestMethod'\n            - 'Invoke-WebRequest'\n            - ' irm ' # Space before and after to avoid false positives with 'irm' as a substring\n            - 'iwr '\n            # - 'Net.WebClient' # There are various other rules that cover this, so it is commented out\n            - 'Resume-BitsTransfer'\n            - 'Start-BitsTransfer'\n            - 'wget '\n            - 'WinHttp.WinHttpRequest'\n    condition: selection\nfalsepositives:\n    - Use of Get-Command and Get-Help modules to reference Invoke-WebRequest and Start-BitsTransfer.\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1059.001","id":"T1059.001","name":"PowerShell","page":"techniques/enterprise/T1059.001/"}],"data_path":"data/detection-rules/9fc51a3c-81b3-4fa7-b35f-7c02cf10fd2d.json","kind":"sigma"}