{"id":"d08722cd-3d09-449a-80b4-83ea2d9d4616","title":"Hidden Files and Directories","description":"Detects adversary creating hidden file or directory, by detecting directories or files with . as the first character","author":"Pawel Mazur","status":"test","level":"low","date":"2021-09-06","modified":"2025-06-16","tags":["attack.stealth","attack.t1564.001"],"technique_ids":["T1564.001"],"logsource":{"product":"linux","service":"auditd"},"falsepositives":["Unknown"],"references":["https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1564.001/T1564.001.md"],"source_path":"rules/linux/auditd/execve/lnx_auditd_hidden_files_directories.yml","source_sha256":"98e9c83ba23ee97df42a3069479b687b5e011a7bccf8ff758093b3ebb91885b2","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/linux/auditd/execve/lnx_auditd_hidden_files_directories.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Hidden Files and Directories\nid: d08722cd-3d09-449a-80b4-83ea2d9d4616\nstatus: test\ndescription: Detects adversary creating hidden file or directory, by detecting directories or files with . as the first character\nreferences:\n    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1564.001/T1564.001.md\nauthor: 'Pawel Mazur'\ndate: 2021-09-06\nmodified: 2025-06-16\ntags:\n    - attack.stealth\n    - attack.t1564.001\nlogsource:\n    product: linux\n    service: auditd\ndetection:\n    selection_commands:\n        type: 'EXECVE'\n        a0:\n            - 'mkdir'\n            - 'nano'\n            - 'touch'\n            - 'vi'\n            - 'vim'\n    selection_arguments:\n        - a1|re: '(^|\\/)\\.[^.\\/]'\n        - a2|re: '(^|\\/)\\.[^.\\/]'\n    condition: all of selection_*\nfalsepositives:\n    - Unknown\nlevel: low\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1564.001","id":"T1564.001","name":"Hidden Files and Directories","page":"techniques/enterprise/T1564.001/"}],"data_path":"data/detection-rules/d08722cd-3d09-449a-80b4-83ea2d9d4616.json","kind":"sigma"}