SigmaHQ/rules/windows/process_creation/win_remote_powershell_session_process.yml

title: Remote PowerShell Session Host Process (WinRM)
id: 734f8d9b-42b8-41b2-bcf5-abaf49d5a3c8
description: Detects remote PowerShell sections by monitoring for wsmprovhost (WinRM host process) as a parent or child process (sign of an active PowerShell remote session).
status: experimental
date: 2019/09/12
modified: 2021/05/21
author: Roberto Rodriguez @Cyb3rWard0g
references:
    - https://threathunterplaybook.com/notebooks/windows/02_execution/WIN-190511223310.html
tags:
    - attack.execution
    - attack.t1086 # an old one
    - attack.t1059.001
    - attack.t1021.006
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        - Image|endswith: '\wsmprovhost.exe'
        - ParentImage|endswith: '\wsmprovhost.exe'
    condition: selection
fields:
    - ComputerName
    - User
    - CommandLine
falsepositives:
    - Legitimate usage of remote Powershell, e.g. for monitoring purposes.
level: medium