{"id":"403ed92c-b7ec-4edd-9947-5b535ee12d46","title":"Crontab Enumeration","description":"Detects usage of crontab to list the tasks of the user","author":"Joseliyo Sanchez, @Joseliyo_Jstnk","status":"test","level":"low","date":"2023-06-02","modified":"","tags":["attack.discovery","attack.t1007"],"technique_ids":["T1007"],"logsource":{"product":"linux","category":"process_creation"},"falsepositives":["Legitimate use of crontab"],"references":["https://blogs.jpcert.or.jp/en/2023/05/gobrat.html","https://jstnk9.github.io/jstnk9/research/GobRAT-Malware/","https://www.virustotal.com/gui/file/60bcd645450e4c846238cf0e7226dc40c84c96eba99f6b2cffcd0ab4a391c8b3/detection","https://www.virustotal.com/gui/file/3e44c807a25a56f4068b5b8186eee5002eed6f26d665a8b791c472ad154585d1/detection"],"source_path":"rules/linux/process_creation/proc_creation_lnx_crontab_enumeration.yml","source_sha256":"26afa648428dc61c9b499be116337362bdf67a76eac328d95fb3a25da468a23b","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/linux/process_creation/proc_creation_lnx_crontab_enumeration.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Crontab Enumeration\nid: 403ed92c-b7ec-4edd-9947-5b535ee12d46\nstatus: test\ndescription: Detects usage of crontab to list the tasks of the user\nreferences:\n    - https://blogs.jpcert.or.jp/en/2023/05/gobrat.html\n    - https://jstnk9.github.io/jstnk9/research/GobRAT-Malware/\n    - https://www.virustotal.com/gui/file/60bcd645450e4c846238cf0e7226dc40c84c96eba99f6b2cffcd0ab4a391c8b3/detection\n    - https://www.virustotal.com/gui/file/3e44c807a25a56f4068b5b8186eee5002eed6f26d665a8b791c472ad154585d1/detection\nauthor: Joseliyo Sanchez, @Joseliyo_Jstnk\ndate: 2023-06-02\ntags:\n    - attack.discovery\n    - attack.t1007\nlogsource:\n    product: linux\n    category: process_creation\ndetection:\n    selection:\n        Image|endswith: '/crontab'\n        CommandLine|contains: ' -l'\n    condition: selection\nfalsepositives:\n    - Legitimate use of crontab\nlevel: low\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1007","id":"T1007","name":"System Service Discovery","page":"techniques/enterprise/T1007/"}],"data_path":"data/detection-rules/403ed92c-b7ec-4edd-9947-5b535ee12d46.json","kind":"sigma"}