Azure DNS Zone Modified or Deleted

Identifies when DNS zone is modified or deleted.

Sigma rule (View on GitHub)

 1title: Azure DNS Zone Modified or Deleted
 2id: af6925b0-8826-47f1-9324-337507a0babd
 3status: test
 4description: Identifies when DNS zone is modified or deleted.
 5references:
 6    - https://learn.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes
 7author: Austin Songer @austinsonger
 8date: 2021/08/08
 9modified: 2022/08/23
10tags:
11    - attack.impact
12    - attack.t1565.001
13logsource:
14    product: azure
15    service: activitylogs
16detection:
17    selection:
18        operationName|startswith: 'MICROSOFT.NETWORK/DNSZONES'
19        operationName|endswith:
20            - '/WRITE'
21            - '/DELETE'
22    condition: selection
23falsepositives:
24    - DNS zone modified and 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.
25    - DNS zone modification from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
26level: medium

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