{"id":"e312efd0-35a1-407f-8439-b8d434b438a6","title":"Potential PowerShell Obfuscation Via WCHAR/CHAR","description":"Detects suspicious encoded character syntax often used for defense evasion","author":"Florian Roth (Nextron Systems)","status":"test","level":"high","date":"2020-07-09","modified":"2025-03-03","tags":["attack.execution","attack.stealth","attack.t1059.001","attack.t1027"],"technique_ids":["T1027","T1059.001"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://twitter.com/0gtweet/status/1281103918693482496"],"source_path":"rules/windows/process_creation/proc_creation_win_powershell_obfuscation_via_utf8.yml","source_sha256":"5f9a6d73a8adfc32a857c50adc4fcb76d49aa38192bffb0ab1042a57aa2b69bc","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_powershell_obfuscation_via_utf8.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Potential PowerShell Obfuscation Via WCHAR/CHAR\nid: e312efd0-35a1-407f-8439-b8d434b438a6\nstatus: test\ndescription: Detects suspicious encoded character syntax often used for defense evasion\nreferences:\n    - https://twitter.com/0gtweet/status/1281103918693482496\nauthor: Florian Roth (Nextron Systems)\ndate: 2020-07-09\nmodified: 2025-03-03\ntags:\n    - attack.execution\n    - attack.stealth\n    - attack.t1059.001\n    - attack.t1027\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        CommandLine|contains:\n            - '[char]0x'\n            - '(WCHAR)0x'\n    condition: selection\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1027","id":"T1027","name":"Obfuscated Files or Information","page":"techniques/enterprise/T1027/"},{"key":"enterprise/T1059.001","id":"T1059.001","name":"PowerShell","page":"techniques/enterprise/T1059.001/"}],"data_path":"data/detection-rules/e312efd0-35a1-407f-8439-b8d434b438a6.json","kind":"sigma"}