Phoenix
Sigma IntelligenceBeta
Back to Rules
Detectionmediumtest

Azure Keyvault Secrets Modified or Deleted

Identifies when secrets are modified or deleted in Azure.

Convert In Phoenix Studio

Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.

Launch
Austin SongerCreated Mon Aug 16Updated Tue Aug 23b831353c-1971-477b-abb6-2828edc3bca1cloud
Log Source
Azureactivitylogs
ProductAzure← raw: azure
Serviceactivitylogs← raw: activitylogs
Detection Logic
Detection Logic1 selector
detection:
    selection:
        operationName:
            - MICROSOFT.KEYVAULT/VAULTS/SECRETS/WRITE
            - MICROSOFT.KEYVAULT/VAULTS/SECRETS/DELETE
            - MICROSOFT.KEYVAULT/VAULTS/SECRETS/BACKUP/ACTION
            - MICROSOFT.KEYVAULT/VAULTS/SECRETS/PURGE/ACTION
            - MICROSOFT.KEYVAULT/VAULTS/SECRETS/UPDATE/ACTION
            - MICROSOFT.KEYVAULT/VAULTS/SECRETS/RECOVER/ACTION
            - MICROSOFT.KEYVAULT/VAULTS/SECRETS/RESTORE/ACTION
            - MICROSOFT.KEYVAULT/VAULTS/SECRETS/SETSECRET/ACTION
    condition: selection
False Positives

Secrets being modified or deleted may be performed by a system administrator.

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

Secrets modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.

References
1
Resolving title…
learn.microsoft.com
MITRE ATT&CK
Rule Metadata
Rule ID
b831353c-1971-477b-abb6-2828edc3bca1
Status
test
Level
medium
Type
Detection
Created
Mon Aug 16
Modified
Tue Aug 23
Author
Austin Songer
Path
rules/cloud/azure/activity_logs/azure_keyvault_secrets_modified_or_deleted.yml
Raw Tags
attack.impactattack.credential-accessattack.t1552attack.t1552.001
View on GitHub