{"id":"b3cec4e7-6901-4b0d-a02d-8ab2d8eb818b","title":"File Time Attribute Change - Linux","description":"Detect file time attribute change to hide new or changes to existing files.","author":"Igor Fits, oscd.community","status":"test","level":"medium","date":"2020-10-15","modified":"2022-11-28","tags":["attack.stealth","attack.t1070.006"],"technique_ids":["T1070.006"],"logsource":{"product":"linux","service":"auditd"},"falsepositives":["Unknown"],"references":["https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.006/T1070.006.md"],"source_path":"rules/linux/auditd/execve/lnx_auditd_change_file_time_attr.yml","source_sha256":"a2b8a1ee2bf22d7f99328e618c58c4b5a2b057f1b9a615a59f2a9c613c395a34","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/linux/auditd/execve/lnx_auditd_change_file_time_attr.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: File Time Attribute Change - Linux\nid: b3cec4e7-6901-4b0d-a02d-8ab2d8eb818b\nstatus: test\ndescription: Detect file time attribute change to hide new or changes to existing files.\nreferences:\n    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.006/T1070.006.md\nauthor: 'Igor Fits, oscd.community'\ndate: 2020-10-15\nmodified: 2022-11-28\ntags:\n    - attack.stealth\n    - attack.t1070.006\nlogsource:\n    product: linux\n    service: auditd\ndetection:\n    execve:\n        type: 'EXECVE'\n    touch:\n        - 'touch'\n    selection2:\n        - '-t'\n        - '-acmr'\n        - '-d'\n        - '-r'\n    condition: execve and touch and selection2\nfalsepositives:\n    - Unknown\nlevel: medium\nsimulation:\n    - type: atomic-red-team\n      name: Set a file's access timestamp\n      technique: T1070.006\n      atomic_guid: 5f9113d5-ed75-47ed-ba23-ea3573d05810\n    - type: atomic-red-team\n      name: Set a file's modification timestamp\n      technique: T1070.006\n      atomic_guid: 20ef1523-8758-4898-b5a2-d026cc3d2c52\n    - type: atomic-red-team\n      name: Modify file timestamps using reference file\n      technique: T1070.006\n      atomic_guid: 631ea661-d661-44b0-abdb-7a7f3fc08e50\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1070.006","id":"T1070.006","name":"Timestomp","page":"techniques/enterprise/T1070.006/"}],"data_path":"data/detection-rules/b3cec4e7-6901-4b0d-a02d-8ab2d8eb818b.json","kind":"sigma"}