Sigma rule: Bitbucket Unauthorized Access To A Resource

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-398c202d1101, updated 2024-02-25T00:00:00.000Z.

Rule

Title
Bitbucket Unauthorized Access To A Resource
Status
test
Level
critical
Author
Muhammad Faisal (@faisalusuf)
Date
2024-02-25
File
rules/application/bitbucket/audit/bitbucket_audit_unauthorized_access_detected.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects unauthorized access attempts to a resource.

Log source

product
bitbucket
service
audit
definition
Requirements: "Advance" log level is required to receive these audit events.

Detection

selection:
    auditType.category: 'Security'
    auditType.action: 'Unauthorized access to a resource'
condition: selection

False positives (as the rule lists them)

  • Access attempts to non-existent repositories or due to outdated plugins. Usually "Anonymous" user is reported in the "author.name" field in most cases.

Tags

  • attack.resource-development
  • attack.t1586

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_unauthorized_access_detected.yml

Sources and licences

  • SigmaHQ

    "Bitbucket Unauthorized Access To A Resource" by Muhammad Faisal (@faisalusuf) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/application/bitbucket/audit/bitbucket_audit_unauthorized_access_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 Unauthorized Access To A Resource",
entity page, dataset version ref-398c202d1101, updated 2024-02-25T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/7215374a-de4f-4b33-8ba5-70804c9251d3 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 7215374a-de4f-4b33-8ba5-70804c9251d3, 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.