Sigma rule: CA Policy Updated by Non Approved Actor

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-9117cf926922, updated 2024-05-28T00:00:00.000Z.

Rule

Title
CA Policy Updated by Non Approved Actor
Status
test
Level
medium
Author
Corissa Koopmans, '@corissalea'
Date
2022-07-19
Modified
2024-05-28
File
rules/cloud/azure/audit_logs/azure_aad_secops_ca_policy_updatedby_bad_actor.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Monitor and alert on conditional access changes. Is Initiated by (actor) approved to make changes? Review Modified Properties and compare "old" vs "new" value.

Log source

product
azure
service
auditlogs

Detection

selection:
    properties.message: Update conditional access policy
condition: selection

False positives (as the rule lists them)

  • Misconfigured role permissions
  • Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.

Tags

  • attack.privilege-escalation
  • attack.credential-access
  • attack.persistence
  • attack.defense-impairment
  • attack.t1548
  • attack.t1556

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_aad_secops_ca_policy_updatedby_bad_actor.yml

Sources and licences

  • SigmaHQ

    "CA Policy Updated by Non Approved Actor" by Corissa Koopmans, '@corissalea' (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/cloud/azure/audit_logs/azure_aad_secops_ca_policy_updatedby_bad_actor.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: CA Policy Updated by Non Approved Actor",
entity page, dataset version ref-9117cf926922, updated 2024-05-28T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/50a3c7aa-ec29-44a4-92c1-fce229eef6fc (accessed 2026-11-03).
Underlying source: SigmaHQ rule 50a3c7aa-ec29-44a4-92c1-fce229eef6fc, 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.