{"id":"b86d356d-6093-443d-971c-9b07db583c68","title":"Suspicious Curl Change User Agents - Linux","description":"Detects a suspicious curl process start on linux with set useragent options","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"medium","date":"2022-09-15","modified":"","tags":["attack.command-and-control","attack.t1071.001"],"technique_ids":["T1071.001"],"logsource":{"category":"process_creation","product":"linux"},"falsepositives":["Scripts created by developers and admins","Administrative activity"],"references":["https://curl.se/docs/manpage.html"],"source_path":"rules/linux/process_creation/proc_creation_lnx_susp_curl_useragent.yml","source_sha256":"fe850c317deca520d12ce3e53746f4ecedb03bf5ff65919764de1eea9203f711","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/linux/process_creation/proc_creation_lnx_susp_curl_useragent.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Suspicious Curl Change User Agents - Linux\nid: b86d356d-6093-443d-971c-9b07db583c68\nrelated:\n    - id: 3286d37a-00fd-41c2-a624-a672dcd34e60\n      type: derived\nstatus: test\ndescription: Detects a suspicious curl process start on linux with set useragent options\nreferences:\n    - https://curl.se/docs/manpage.html\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2022-09-15\ntags:\n    - attack.command-and-control\n    - attack.t1071.001\nlogsource:\n    category: process_creation\n    product: linux\ndetection:\n    selection:\n        Image|endswith: '/curl'\n        CommandLine|contains:\n            - ' -A '\n            - ' --user-agent '\n    condition: selection\nfalsepositives:\n    - Scripts created by developers and admins\n    - Administrative activity\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1071.001","id":"T1071.001","name":"Web Protocols","page":"techniques/enterprise/T1071.001/"}],"data_path":"data/detection-rules/b86d356d-6093-443d-971c-9b07db583c68.json","kind":"sigma"}