{"id":"6b14bac8-3e3a-4324-8109-42f0546a347f","title":"Scheduled Cron Task/Job - Linux","description":"Detects abuse of the cron utility to perform task scheduling for initial or recurring execution of malicious code. Detection will focus on crontab jobs uploaded from the tmp folder.","author":"Alejandro Ortuno, oscd.community","status":"test","level":"medium","date":"2020-10-06","modified":"2022-11-27","tags":["attack.execution","attack.persistence","attack.privilege-escalation","attack.t1053.003"],"technique_ids":["T1053.003"],"logsource":{"category":"process_creation","product":"linux"},"falsepositives":["Legitimate administration activities"],"references":["https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1053.003/T1053.003.md"],"source_path":"rules/linux/process_creation/proc_creation_lnx_schedule_task_job_cron.yml","source_sha256":"f5e630f32a2d9793bde25c9a00370a593e622a7ef639b4ea0e282a5befea26a2","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/linux/process_creation/proc_creation_lnx_schedule_task_job_cron.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Scheduled Cron Task/Job - Linux\nid: 6b14bac8-3e3a-4324-8109-42f0546a347f\nstatus: test\ndescription: Detects abuse of the cron utility to perform task scheduling for initial or recurring execution of malicious code. Detection will focus on crontab jobs uploaded from the tmp folder.\nreferences:\n    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1053.003/T1053.003.md\nauthor: Alejandro Ortuno, oscd.community\ndate: 2020-10-06\nmodified: 2022-11-27\ntags:\n    - attack.execution\n    - attack.persistence\n    - attack.privilege-escalation\n    - attack.t1053.003\nlogsource:\n    category: process_creation\n    product: linux\ndetection:\n    selection:\n        Image|endswith: 'crontab'\n        CommandLine|contains: '/tmp/'\n    condition: selection\nfalsepositives:\n    - Legitimate administration activities\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1053.003","id":"T1053.003","name":"Cron","page":"techniques/enterprise/T1053.003/"}],"data_path":"data/detection-rules/6b14bac8-3e3a-4324-8109-42f0546a347f.json","kind":"sigma"}