{"id":"0a1f9d29-6465-4776-b091-7f43b26e4c89","title":"Prefetch File Deleted","description":"Detects the deletion of a prefetch file which may indicate an attempt to destroy forensic evidence","author":"Cedric MAURUGEON","status":"test","level":"high","date":"2021-09-29","modified":"2024-01-25","tags":["attack.stealth","attack.t1070.004"],"technique_ids":["T1070.004"],"logsource":{"product":"windows","category":"file_delete"},"falsepositives":["Unknown"],"references":["Internal Research","https://www.group-ib.com/blog/hunting-for-ttps-with-prefetch-files/"],"source_path":"rules/windows/file/file_delete/file_delete_win_delete_prefetch.yml","source_sha256":"5cd9537b3b3c8cbd5c84fef26e8eb6c46bba6bea615224eb557291d8667db071","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/file/file_delete/file_delete_win_delete_prefetch.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Prefetch File Deleted\nid: 0a1f9d29-6465-4776-b091-7f43b26e4c89\nstatus: test\ndescription: Detects the deletion of a prefetch file which may indicate an attempt to destroy forensic evidence\nreferences:\n    - Internal Research\n    - https://www.group-ib.com/blog/hunting-for-ttps-with-prefetch-files/\nauthor: Cedric MAURUGEON\ndate: 2021-09-29\nmodified: 2024-01-25\ntags:\n    - attack.stealth\n    - attack.t1070.004\nlogsource:\n    product: windows\n    category: file_delete\ndetection:\n    selection:\n        TargetFilename|contains: ':\\Windows\\Prefetch\\'\n        TargetFilename|endswith: '.pf'\n    filter_main_svchost:\n        Image|endswith: ':\\windows\\system32\\svchost.exe'\n        User|contains: # covers many language settings\n            - 'AUTHORI'\n            - 'AUTORI'\n    condition: selection and not 1 of filter_main_*\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1070.004","id":"T1070.004","name":"File Deletion","page":"techniques/enterprise/T1070.004/"}],"data_path":"data/detection-rules/0a1f9d29-6465-4776-b091-7f43b26e4c89.json","kind":"sigma"}