{"id":"a77c1610-fc73-4019-8e29-0f51efc04a51","title":"Potential Dosfuscation Activity","description":"Detects possible payload obfuscation via the commandline","author":"frack113, Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"medium","date":"2022-02-15","modified":"2023-03-06","tags":["attack.execution","attack.t1059"],"technique_ids":["T1059"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://www.fireeye.com/content/dam/fireeye-www/blog/pdfs/dosfuscation-report.pdf","https://github.com/danielbohannon/Invoke-DOSfuscation"],"source_path":"rules/windows/process_creation/proc_creation_win_cmd_dosfuscation.yml","source_sha256":"670b1eedab6319844a0b99a8939f7bdb44a80e1f53b3afb0df918b5c4502aa50","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_cmd_dosfuscation.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 Dosfuscation Activity\nid: a77c1610-fc73-4019-8e29-0f51efc04a51\nstatus: test\ndescription: Detects possible payload obfuscation via the commandline\nreferences:\n    - https://www.fireeye.com/content/dam/fireeye-www/blog/pdfs/dosfuscation-report.pdf\n    - https://github.com/danielbohannon/Invoke-DOSfuscation\nauthor: frack113, Nasreddine Bencherchali (Nextron Systems)\ndate: 2022-02-15\nmodified: 2023-03-06\ntags:\n    - attack.execution\n    - attack.t1059\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        CommandLine|contains:\n            - '^^'\n            - '^|^'\n            - ',;,'\n            - ';;;;'\n            - ';; ;;'\n            - '(,(,'\n            - '%COMSPEC:~'\n            - ' c^m^d'\n            - '^c^m^d'\n            - ' c^md'\n            - ' cm^d'\n            - '^cm^d'\n            - ' s^et '\n            - ' s^e^t '\n            - ' se^t '\n            # - '%%'\n            # - '&&'\n            # - '\"\"'\n    condition: selection\nfalsepositives:\n    - Unknown\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1059","id":"T1059","name":"Command and Scripting Interpreter","page":"techniques/enterprise/T1059/"}],"data_path":"data/detection-rules/a77c1610-fc73-4019-8e29-0f51efc04a51.json","kind":"sigma"}