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Create azure_network_virtual_device_modified_or_deleted.yml

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Austin Songer
2021-08-08 22:52:15 -05:00
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rules/cloud/azure_network_virtual_device_modified_or_deleted.yml
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title: Azure Virtual Network Device Modified or Deleted
id: 15ef3fac-f0f0-4dc4-ada0-660aa72980b3
description: Identifies when a virtual network device is being modified or deleted. This can be a network interface, network virtual applicance, vitual hub, or virtual router.
author: Austin Songer
status: experimental
date: 2021/08/08
references:
- https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations
logsource:
service: azure.activitylogs
detection:
selection:
properties.message:
- MICROSOFT.NETWORK/NETWORKINTERFACES/WRITE
- MICROSOFT.NETWORK/NETWORKINTERFACES/JOIN/ACTION
- MICROSOFT.NETWORK/NETWORKINTERFACES/DELETE
- MICROSOFT.NETWORK/NETWORKVIRTUALAPPLIANCES/DELETE
- MICROSOFT.NETWORK/NETWORKVIRTUALAPPLIANCES/WRITE
- MICROSOFT.NETWORK/VIRTUALHUBS/DELETE
- MICROSOFT.NETWORK/VIRTUALHUBS/WRITE
- MICROSOFT.NETWORK/VIRTUALROUTERS/WRITE
- MICROSOFT.NETWORK/VIRTUALROUTERS/DELETE
condition: selection
level: medium
tags:
- attack.impact
falsepositives:
- 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.
- 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.