blue-team-tools/rules/windows/powershell/powershell_script/powershell_web_request.yml

title: Windows PowerShell Web Request
id: 1139d2e2-84b1-4226-b445-354492eba8ba
related:
    - id: 9fc51a3c-81b3-4fa7-b35f-7c02cf10fd2d
      type: derived
status: experimental
description: Detects the use of various web request methods (including aliases) via Windows PowerShell command
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
author: James Pemberton / @4A616D6573
date: 2019/10/24
modified: 2021/10/16
tags:
    - attack.execution
    - attack.t1059.001
    - attack.t1086  #an old one
logsource:
    product: windows
    category: ps_script
    definition: 'Script block logging must be enabled'
detection:
    selection:
        ScriptBlockText|contains:
            - 'Invoke-WebRequest'
            - 'iwr '
            - 'wget '
            - 'curl '
            - 'Net.WebClient'
            - 'Start-BitsTransfer'
    condition: selection
falsepositives:
    - Use of Get-Command and Get-Help modules to reference Invoke-WebRequest and Start-BitsTransfer.
level: medium