Potential PowerShell Obfuscation Via WCHAR/CHAR

calendar Jun 4, 2025 · attack.execution attack.t1059.001 attack.defense-evasion attack.t1027  ·
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Detects suspicious encoded character syntax often used for defense evasion

Sigma rule (View on GitHub)

 1title: Potential PowerShell Obfuscation Via WCHAR/CHAR
 2id: e312efd0-35a1-407f-8439-b8d434b438a6
 3status: test
 4description: Detects suspicious encoded character syntax often used for defense evasion
 5references:
 6    - https://twitter.com/0gtweet/status/1281103918693482496
 7author: Florian Roth (Nextron Systems)
 8date: 2020-07-09
 9modified: 2025-03-03
10tags:
11    - attack.execution
12    - attack.t1059.001
13    - attack.defense-evasion
14    - attack.t1027
15logsource:
16    category: process_creation
17    product: windows
18detection:
19    selection:
20        CommandLine|contains:
21            - '[char]0x'
22            - '(WCHAR)0x'
23    condition: selection
24falsepositives:
25    - Unknown
26level: high

References

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