{"id":"2c03648b-e081-41a5-b9fb-7d854a915091","title":"Rclone Activity via Proxy","description":"Detects the use of rclone, a command-line program to manage files on cloud storage, via its default user-agent string","author":"Janantha Marasinghe","status":"test","level":"medium","date":"2022-10-18","modified":"","tags":["attack.exfiltration","attack.t1567.002"],"technique_ids":["T1567.002"],"logsource":{"category":"proxy"},"falsepositives":["Valid requests with this exact user agent to that is used by legitimate scripts or sysadmin operations"],"references":["https://rclone.org/","https://www.kroll.com/en/insights/publications/cyber/new-m365-business-email-compromise-attacks-with-rclone"],"source_path":"rules/web/proxy_generic/proxy_ua_rclone.yml","source_sha256":"3eadd02be960102969a8211f16bff79300813c8e2f7f9ebc731a8f2cf39a3c21","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/web/proxy_generic/proxy_ua_rclone.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Rclone Activity via Proxy\nid: 2c03648b-e081-41a5-b9fb-7d854a915091\nstatus: test\ndescription: Detects the use of rclone, a command-line program to manage files on cloud storage, via its default user-agent string\nreferences:\n    - https://rclone.org/\n    - https://www.kroll.com/en/insights/publications/cyber/new-m365-business-email-compromise-attacks-with-rclone\nauthor: Janantha Marasinghe\ndate: 2022-10-18\ntags:\n    - attack.exfiltration\n    - attack.t1567.002\nlogsource:\n    category: proxy\ndetection:\n    selection:\n        c-useragent|startswith: 'rclone/v'\n    condition: selection\nfalsepositives:\n    - Valid requests with this exact user agent to that is used by legitimate scripts or sysadmin operations\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1567.002","id":"T1567.002","name":"Exfiltration to Cloud Storage","page":"techniques/enterprise/T1567.002/"}],"data_path":"data/detection-rules/2c03648b-e081-41a5-b9fb-7d854a915091.json","kind":"sigma"}