Sigma rule: User Risk and MFA Registration Policy Updated

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-8c3c575959f9, updated 2024-08-13T00:00:00.000Z.

Rule

Title
User Risk and MFA Registration Policy Updated
Status
test
Level
high
Author
Harjot Singh (@cyb3rjy0t)
Date
2024-08-13
File
rules/cloud/azure/audit_logs/azure_update_risk_and_mfa_registration_policy.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects changes and updates to the user risk and MFA registration policy.
Attackers can modified the policies to Bypass MFA, weaken security thresholds, facilitate further attacks, maintain persistence.

Log source

product
azure
service
auditlogs

Detection

selection:
    LoggedByService: 'AAD Management UX'
    Category: 'Policy'
    OperationName: 'Update User Risk and MFA Registration Policy'
condition: selection

False positives (as the rule lists them)

  • Known updates by administrators.

Tags

  • attack.persistence

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_update_risk_and_mfa_registration_policy.yml

Sources and licences

  • SigmaHQ

    "User Risk and MFA Registration Policy Updated" by Harjot Singh (@cyb3rjy0t) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/cloud/azure/audit_logs/azure_update_risk_and_mfa_registration_policy.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 Risk and MFA Registration Policy Updated",
entity page, dataset version ref-8c3c575959f9, updated 2024-08-13T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/d4c7758e-9417-4f2e-9109-6125d66dabef (accessed 2026-11-03).
Underlying source: SigmaHQ rule d4c7758e-9417-4f2e-9109-6125d66dabef, 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.