SigmaHQ/rules/windows/powershell/powershell_automated_collection.yml

title: Automated Collection Command PowerShell
id: c1dda054-d638-4c16-afc8-53e007f3fbc5
status: experimental
author: frack113
date: 2021/07/28
description: Once established within a system or network, an adversary may use automated techniques for collecting internal data.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1119/T1119.md
tags:
    - attack.collection
    - attack.t1119
logsource:
    product: windows
    service: powershell
    definition: Script block logging must be enabled
detection:
    selection_eventid:
        EventID: 4104
    selection_ext:
        ScriptBlockText|contains:
            - '.doc'
            - '.docx'
            - '.xls'
            - '.xlsx'
            - '.ppt'
            - '.pptx'
            - '.rtf'
            - '.pdf'
            - '.txt'
    selection_cmd:
        ScriptBlockText|contains|all:
            - 'Get-ChildItem'
            - ' -Recurse '
            - ' -Include '
    condition: all of them
falsepositives:
    - Unknown
level: medium