Azure Keyvault Secrets Modified or Deleted

 1title: Azure Keyvault Secrets Modified or Deleted
 2id: b831353c-1971-477b-abb6-2828edc3bca1
 3status: test
 4description: Identifies when secrets are modified or deleted in Azure.
 5references:
 6    - https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations
 7author: Austin Songer @austinsonger
 8date: 2021/08/16
 9modified: 2022/08/23
10tags:
11    - attack.impact
12    - attack.credential_access
13    - attack.t1552
14    - attack.t1552.001
15logsource:
16    product: azure
17    service: activitylogs
18detection:
19    selection:
20        operationName:
21            - MICROSOFT.KEYVAULT/VAULTS/SECRETS/WRITE
22            - MICROSOFT.KEYVAULT/VAULTS/SECRETS/DELETE
23            - MICROSOFT.KEYVAULT/VAULTS/SECRETS/BACKUP/ACTION
24            - MICROSOFT.KEYVAULT/VAULTS/SECRETS/PURGE/ACTION
25            - MICROSOFT.KEYVAULT/VAULTS/SECRETS/UPDATE/ACTION
26            - MICROSOFT.KEYVAULT/VAULTS/SECRETS/RECOVER/ACTION
27            - MICROSOFT.KEYVAULT/VAULTS/SECRETS/RESTORE/ACTION
28            - MICROSOFT.KEYVAULT/VAULTS/SECRETS/SETSECRET/ACTION
29    condition: selection
30falsepositives:
31    - Secrets being modified or deleted may be performed by a system administrator.
32    - Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.
33    - Secrets modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
34level: medium