Suspicious Bitbucket User Login Failure Through SSH (via audit)

title: Suspicious Bitbucket User Login Failure Through SSH (via audit)
id: 46e5c022-8c8b-5e21-b5d4-a10b65db2534
status: stable
description: This rule detects SSH user login access failures. Please note that this rule can be noisy and is recommended to use with correlation based on "author.name" field.
references:
    - https://attack.mitre.org/techniques/T1110/
    - https://attack.mitre.org/techniques/T1021/004/
    - https://confluence.atlassian.com/bitbucketserver/view-and-configure-the-audit-log-776640417.html
    - https://confluence.atlassian.com/bitbucketserver/enable-ssh-access-to-git-repositories-776640358.html
author: Huntrule Team
date: 2026-01-19
tags:
    - attack.lateral-movement
    - attack.credential-access
    - attack.t1021.004
    - 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(SSH)'
    condition: selection
falsepositives:
    - Unknown
level: medium