title: PowerShell Encoded Character Syntax
author: Florian Roth
date: 2020/07/09
description: Detects suspicious encoded character syntax often used for defense evasion
detection:
    SELECTION_1:
        EventID: 1
    SELECTION_2:
        CommandLine: '*(WCHAR)0x*'
    condition: (SELECTION_1 and SELECTION_2)
falsepositives:
- Unknown
id: e312efd0-35a1-407f-8439-b8d434b438a6
level: high
logsource:
    category: process_creation
    product: windows
references:
- https://twitter.com/0gtweet/status/1281103918693482496
status: experimental
tags:
- attack.execution
- attack.t1059.001
- attack.t1086
- attack.defense_evasion
- attack.t1027
yml_filename: win_susp_powershell_encoded_param.yml
yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation