Azure Virtual Network Device Modified or Deleted
Identifies when a virtual network device is being modified or deleted. This can be a network interface, network virtual appliance, virtual hub, or virtual router.
Sigma rule (View on GitHub)
1title: Azure Virtual Network Device Modified or Deleted
2id: 15ef3fac-f0f0-4dc4-ada0-660aa72980b3
3status: test
4description: |
5 Identifies when a virtual network device is being modified or deleted.
6 This can be a network interface, network virtual appliance, virtual hub, or virtual router.
7references:
8 - https://learn.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations
9author: Austin Songer @austinsonger
10date: 2021-08-08
11modified: 2022-08-23
12tags:
13 - attack.impact
14logsource:
15 product: azure
16 service: activitylogs
17detection:
18 selection:
19 operationName:
20 - MICROSOFT.NETWORK/NETWORKINTERFACES/TAPCONFIGURATIONS/WRITE
21 - MICROSOFT.NETWORK/NETWORKINTERFACES/TAPCONFIGURATIONS/DELETE
22 - MICROSOFT.NETWORK/NETWORKINTERFACES/WRITE
23 - MICROSOFT.NETWORK/NETWORKINTERFACES/JOIN/ACTION
24 - MICROSOFT.NETWORK/NETWORKINTERFACES/DELETE
25 - MICROSOFT.NETWORK/NETWORKVIRTUALAPPLIANCES/DELETE
26 - MICROSOFT.NETWORK/NETWORKVIRTUALAPPLIANCES/WRITE
27 - MICROSOFT.NETWORK/VIRTUALHUBS/DELETE
28 - MICROSOFT.NETWORK/VIRTUALHUBS/WRITE
29 - MICROSOFT.NETWORK/VIRTUALROUTERS/WRITE
30 - MICROSOFT.NETWORK/VIRTUALROUTERS/DELETE
31 condition: selection
32falsepositives:
33 - Virtual Network Device 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.
34 - Virtual Network Device modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
35level: medium
References
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