Sigma rule: Added Credentials to Existing Application

Rule

Title

Added Credentials to Existing Application

Status

test

Level

high

Author

Mark Morowczynski '@markmorow', Bailey Bercik '@baileybercik'

Date

2022-05-26

Modified

2026-08-20

File

rules/cloud/azure/audit_logs/azure_app_credential_added.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects when a new credential is added to an existing application. Any additional credentials added outside of expected processes could be a malicious actor using those credentials.

Log source

product

azure

service

auditlogs

Detection

selection:
    properties.message:
        - 'Update application - Certificates and secrets management' # See https://github.com/SigmaHQ/sigma/pull/6247#issuecomment-5463002942
        - 'Update Service principal/Update Application'
condition: selection

False positives (as the rule lists them)

• When credentials are added/removed as part of the normal working hours/workflows

Tags

• attack.privilege-escalation
• attack.t1098.001
• attack.persistence

MITRE ATT&CK ids this rule names

• T1098.001

References

• https://learn.microsoft.com/en-us/entra/architecture/security-operations-applications#application-credentials

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_app_credential_added.yml