Azure DNS Zone Modified or Deleted

 Original Source: [Sigma source]
Title: Azure DNS Zone Modified or Deleted
Status: test
Description:Identifies when DNS zone is modified or deleted.
References:
  -https://learn.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes
Author: Austin Songer @austinsonger
Date: 2021-08-08
modified:2022-08-23
Tags:
  • -'attack.impact'
  • -'attack.t1565.001'
Logsource:
  • product: azure
  • service: activitylogs
Detection:
  selection:
    operationName|startswith: 'MICROSOFT.NETWORK/DNSZONES'
    operationName|endswith:
      -'/WRITE'
      -'/DELETE'

  condition:selection
Falsepositives:
  -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.
  -DNS zone modification from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
Level: medium