Bitbucket User Login Failure

 Original Source: [Sigma source]
Title: Bitbucket User Login Failure
Status: test
Description:Detects user authentication failure events. Please note that this rule can be noisy and it is recommended to use with correlation based on "author.name" field.
References:
  -https://confluence.atlassian.com/bitbucketserver/audit-log-events-776640423.html
Author: Muhammad Faisal (@faisalusuf)
Date: 2024-02-25
modified:None
Tags:
  • -'attack.privilege-escalation'
  • -'attack.persistence'
  • -'attack.initial-access'
  • -'attack.credential-access'
  • -'attack.stealth'
  • -'attack.t1078.004'
  • -'attack.t1110'
Logsource:
  • product: bitbucket
  • service: audit
  • definition: Requirements: "Advance" log level is required to receive these audit events.
Detection:
  selection:
    auditType.category: 'Authentication'
    auditType.action: 'User login failed'
  condition:selection
Falsepositives:
  -Legitimate user wrong password attempts.
Level: medium