{"id":"eb6c2004-1cef-427f-8885-9042974e5eb6","title":"Suspicious Network Communication With IPFS","description":"Detects connections to interplanetary file system (IPFS) containing a user's email address which mirrors behaviours observed in recent phishing campaigns leveraging IPFS to host credential harvesting webpages.","author":"Gavin Knapp","status":"test","level":"low","date":"2023-03-16","modified":"","tags":["attack.collection","attack.credential-access","attack.t1056"],"technique_ids":["T1056"],"logsource":{"category":"proxy"},"falsepositives":["Legitimate use of IPFS being used in the organisation. However the cs-uri regex looking for a user email will likely negate this."],"references":["https://blog.talosintelligence.com/ipfs-abuse/","https://github.com/Cisco-Talos/IOCs/tree/80caca039988252fbb3f27a2e89c2f2917f582e0/2022/11","https://isc.sans.edu/diary/IPFS%20phishing%20and%20the%20need%20for%20correctly%20set%20HTTP%20security%20headers/29638"],"source_path":"rules/web/proxy_generic/proxy_susp_ipfs_cred_harvest.yml","source_sha256":"bcccd19eaf3af48b350e91a3083002fc85243457215cf8bf8d6f463ac39dbae2","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/web/proxy_generic/proxy_susp_ipfs_cred_harvest.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 Network Communication With IPFS\nid: eb6c2004-1cef-427f-8885-9042974e5eb6\nstatus: test\ndescription: Detects connections to interplanetary file system (IPFS) containing a user's email address which mirrors behaviours observed in recent phishing campaigns leveraging IPFS to host credential harvesting webpages.\nreferences:\n    - https://blog.talosintelligence.com/ipfs-abuse/\n    - https://github.com/Cisco-Talos/IOCs/tree/80caca039988252fbb3f27a2e89c2f2917f582e0/2022/11\n    - https://isc.sans.edu/diary/IPFS%20phishing%20and%20the%20need%20for%20correctly%20set%20HTTP%20security%20headers/29638\nauthor: Gavin Knapp\ndate: 2023-03-16\ntags:\n    - attack.collection\n    - attack.credential-access\n    - attack.t1056\nlogsource:\n    category: proxy\ndetection:\n    selection:\n        cs-uri|re: '(?i)(ipfs\\.io/|ipfs\\.io\\s).+\\..+@.+\\.[a-z]+'\n    condition: selection\nfalsepositives:\n    - Legitimate use of IPFS being used in the organisation. However the cs-uri regex looking for a user email will likely negate this.\nlevel: low\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1056","id":"T1056","name":"Input Capture","page":"techniques/enterprise/T1056/"}],"data_path":"data/detection-rules/eb6c2004-1cef-427f-8885-9042974e5eb6.json","kind":"sigma"}