Bitbucket Audit: Global Permission Add/Remove/Request Events

Alerts on Bitbucket audit events indicating global permission changes being requested, granted, or removed.

FreeReviewedSigma · Medium · v5

Product: bitbucket
Service: audit
Author: Muhammad Faisal (@faisalusuf) (SigmaHQ), DRL 1.1
Published: 2024-02-25
Updated: 2026-07-31

ATT&CK techniques

Persistence → Priv Esc

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1098Account Manipulation
Priv Esc
- T1098Account Manipulation
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule flags Bitbucket audit events where global permissions are requested, granted, or removed. Attackers may modify global access to establish or expand persistent privileges, so tracking these changes helps identify unauthorized authorization updates. It relies on Bitbucket audit log telemetry for permission-category events and specific global permission action names.

Reporting behind it

Related detections9 linkedT1098 — drag to rearrange

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Malicious Modification of a Computer Account SPN (via security)

Suspicious Massive Group Membership Changes (via security)

Malicious High Risk Active Directory Group Membership Change (via security)

Malicious Account Marked as Sensitive and Cannot Be Delegated Had Its Protection Removed (via security)

Malicious Host Constrained Delegation Settings Changed for Potential Abuse (Rubeus) - Kerberos Only (via security)

Malicious Host Set with Unconstrained Delegation (via security)

Bitbucket Audit: Global Permission Add/Remove/Request Events

Pivot detection · T1098 · 9 related

Changelog

v5
Candidate ingested via manual entry.2026-07-31
v4
Candidate ingested via manual entry.2026-07-31
v3
Candidate ingested via manual entry.2026-07-31
v2
Candidate ingested via manual entry.2026-07-31
v1
No changelog recorded for this version.2026-07-30

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

bitbucket-audit-global-permission-added-or-removed-aac6c4f4

title: "Bitbucket Audit: Global Permission Add/Remove/Request Events"
id: d37f7bb5-c926-4785-bfcb-028da10e6684
status: test
description: This rule flags Bitbucket audit events where global permissions are requested, granted, or removed. Attackers may modify global access to establish or expand persistent privileges, so tracking these changes helps identify unauthorized authorization updates. It relies on Bitbucket audit log telemetry for permission-category events and specific global permission action names.
references:
  - https://confluence.atlassian.com/bitbucketserver/audit-log-events-776640423.html
  - https://confluence.atlassian.com/bitbucketserver/global-permissions-776640369.html
  - https://github.com/SigmaHQ/sigma/blob/master/rules/application/bitbucket/audit/bitbucket_audit_global_permissions_change_detected.yml
author: Muhammad Faisal (@faisalusuf), Huntrule Team
date: 2024-02-25
tags:
  - attack.persistence
  - attack.privilege-escalation
  - attack.t1098
logsource:
  product: bitbucket
  service: audit
  definition: 'Requirements: "Advance" log level is required to receive these audit events.'
detection:
  selection:
    auditType.category: Permissions
    auditType.action:
      - Global permission remove request
      - Global permission removed
      - Global permission granted
      - Global permission requested
  condition: selection
falsepositives:
  - Legitimate user activity.
level: medium
license: DRL-1.1
related:
  - id: aac6c4f4-87c7-4961-96ac-c3fd3a42c310
    type: derived

Convert

This rule as a query you can run. Uses no unlock credit.

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