Sigma rule: Bitbucket User Login Failure

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-ffe4a03eed3d, updated 2024-02-25T00:00:00.000Z.

Rule

Title
Bitbucket User Login Failure
Status
test
Level
medium
Author
Muhammad Faisal (@faisalusuf)
Date
2024-02-25
File
rules/application/bitbucket/audit/bitbucket_audit_user_login_failure_detected.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

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.

Log source

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

False positives (as the rule lists them)

  • Legitimate user wrong password attempts.

Tags

  • attack.privilege-escalation
  • attack.persistence
  • attack.initial-access
  • attack.credential-access
  • attack.stealth
  • attack.t1078.004
  • attack.t1110

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/application/bitbucket/audit/bitbucket_audit_user_login_failure_detected.yml

Sources and licences

  • SigmaHQ

    "Bitbucket User Login Failure" by Muhammad Faisal (@faisalusuf) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/application/bitbucket/audit/bitbucket_audit_user_login_failure_detected.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Bitbucket User Login Failure",
entity page, dataset version ref-ffe4a03eed3d, updated 2024-02-25T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/70ed1d26-0050-4b38-a599-92c53d57d45a (accessed 2026-11-03).
Underlying source: SigmaHQ rule 70ed1d26-0050-4b38-a599-92c53d57d45a, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.