Sigma rule: User State Changed From Guest To Member

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-cc171cc2a1de, updated 2022-06-30T00:00:00.000Z.

Rule

Title
User State Changed From Guest To Member
Status
test
Level
medium
Author
MikeDuddington, '@dudders1'
Date
2022-06-30
File
rules/cloud/azure/audit_logs/azure_guest_to_member.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the change of user type from "Guest" to "Member" for potential elevation of privilege.

Log source

product
azure
service
auditlogs

Detection

selection:
    Category: 'UserManagement'
    OperationName: 'Update user'
    properties.message: '"displayName":"UserType","oldValue":"[\"Guest\"]","newValue":"[\"Member\"]"'
condition: selection

False positives (as the rule lists them)

  • If this was approved by System Administrator.

Tags

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

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/cloud/azure/audit_logs/azure_guest_to_member.yml

Sources and licences

  • SigmaHQ

    "User State Changed From Guest To Member" by MikeDuddington, '@dudders1' (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/cloud/azure/audit_logs/azure_guest_to_member.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: User State Changed From Guest To Member",
entity page, dataset version ref-cc171cc2a1de, updated 2022-06-30T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/8dee7a0d-43fd-4b3c-8cd1-605e189d195e (accessed 2026-11-03).
Underlying source: SigmaHQ rule 8dee7a0d-43fd-4b3c-8cd1-605e189d195e, 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.