title: Suspicious PowerShell WindowStyle Option
id: 313fbb0a-a341-4682-848d-6d6f8c4fab7c
status: experimental
description: Adversaries may use hidden windows to conceal malicious activity from the plain sight of users. In some cases, windows that would typically be displayed when an application carries out an operation can be hidden
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1564.003/T1564.003.md
tags:
    - attack.defense_evasion
    - attack.t1564.003
author: frack113
date: 2021/10/20
logsource:
    product: windows
    category: ps_script
    definition: Script block logging must be enabled
detection:
    selection:
        ScriptBlockText|contains|all:
            - 'powershell'
            - 'WindowStyle'
            - 'Hidden'
    condition: selection
falsepositives:
    - Unknown
level: medium