{"id":"70ed1d26-0050-4b38-a599-92c53d57d45a","title":"Bitbucket User Login Failure","description":"Detects user authentication failure events.\nPlease note that this rule can be noisy and it is recommended to use with correlation based on \"author.name\" field.\n","author":"Muhammad Faisal (@faisalusuf)","status":"test","level":"medium","date":"2024-02-25","modified":"","tags":["attack.privilege-escalation","attack.persistence","attack.initial-access","attack.credential-access","attack.stealth","attack.t1078.004","attack.t1110"],"technique_ids":["T1078.004","T1110"],"logsource":{"product":"bitbucket","service":"audit","definition":"Requirements: \"Advance\" log level is required to receive these audit events."},"falsepositives":["Legitimate user wrong password attempts."],"references":["https://confluence.atlassian.com/bitbucketserver/audit-log-events-776640423.html"],"source_path":"rules/application/bitbucket/audit/bitbucket_audit_user_login_failure_detected.yml","source_sha256":"14c806f080291d3a7c4c108da2ee8baaf15aa6a6bf47b71ab76b5f44a7829081","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/application/bitbucket/audit/bitbucket_audit_user_login_failure_detected.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Bitbucket User Login Failure\nid: 70ed1d26-0050-4b38-a599-92c53d57d45a\nstatus: test\ndescription: |\n    Detects user authentication failure events.\n    Please note that this rule can be noisy and it is recommended to use with correlation based on \"author.name\" field.\nreferences:\n    - https://confluence.atlassian.com/bitbucketserver/audit-log-events-776640423.html\nauthor: Muhammad Faisal (@faisalusuf)\ndate: 2024-02-25\ntags:\n    - attack.privilege-escalation\n    - attack.persistence\n    - attack.initial-access\n    - attack.credential-access\n    - attack.stealth\n    - attack.t1078.004\n    - attack.t1110\nlogsource:\n    product: bitbucket\n    service: audit\n    definition: 'Requirements: \"Advance\" log level is required to receive these audit events.'\ndetection:\n    selection:\n        auditType.category: 'Authentication'\n        auditType.action: 'User login failed'\n    condition: selection\nfalsepositives:\n    - Legitimate user wrong password attempts.\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1078.004","id":"T1078.004","name":"Cloud Accounts","page":"techniques/enterprise/T1078.004/"},{"key":"enterprise/T1110","id":"T1110","name":"Brute Force","page":"techniques/enterprise/T1110/"}],"data_path":"data/detection-rules/70ed1d26-0050-4b38-a599-92c53d57d45a.json","kind":"sigma"}