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

title: Suspicious Get-WmiObject
id: 0332a266-b584-47b4-933d-a00b103e1b37
status: experimental
description: The infrastructure for management data and operations that enables local and remote management of Windows personal computers and servers
references:
    - https://attack.mitre.org/datasources/DS0005/
    - https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.management/get-wmiobject?view=powershell-5.1&viewFallbackFrom=powershell-7
author: frack113
date: 2022/01/12
modified: 2022/11/02
tags:
    - attack.persistence
    - attack.t1546
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection:
        ScriptBlockText|contains:
            - 'Get-WmiObject'
            - 'gwmi'
    filter_cl_utility:
        Path|endswith: '\CL_Utility.ps1'
        ScriptBlockText|contains|all:
            - 'function Get-FreeSpace'
            - 'SELECT * FROM Win32_LogicalDisk WHERE MediaType=12'
    condition: selection and not 1 of filter_*
falsepositives:
    - Legitimate PowerShell scripts
level: low