virtual network device modification or deletion 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 modification or deletion by unfamiliar users should be investigated. if known behavior is causing false positives, it can be exempted from the rule.

Techniques

Sample rules

Deprecated - Azure Virtual Network Device Modified or Deleted

source: elastic
technicques:

Description

Identifies when a virtual network device is modified or deleted. This can be a network virtual appliance, virtual hub, or virtual router.

Deprecated Notice - This rule has been deprecated in favor of other rules that provide more contextual threat behavior for Azure Virtual Network.

Detection logic

event.dataset:azure.activitylogs and azure.activitylogs.operation_name:("MICROSOFT.NETWORK/NETWORKINTERFACES/TAPCONFIGURATIONS/WRITE" or
"MICROSOFT.NETWORK/NETWORKINTERFACES/TAPCONFIGURATIONS/DELETE" or "MICROSOFT.NETWORK/NETWORKINTERFACES/WRITE" or
"MICROSOFT.NETWORK/NETWORKINTERFACES/JOIN/ACTION" or "MICROSOFT.NETWORK/NETWORKINTERFACES/DELETE" or
"MICROSOFT.NETWORK/NETWORKVIRTUALAPPLIANCES/DELETE" or "MICROSOFT.NETWORK/NETWORKVIRTUALAPPLIANCES/WRITE" or
"MICROSOFT.NETWORK/VIRTUALHUBS/DELETE" or "MICROSOFT.NETWORK/VIRTUALHUBS/WRITE" or
"MICROSOFT.NETWORK/VIRTUALROUTERS/WRITE" or "MICROSOFT.NETWORK/VIRTUALROUTERS/DELETE") and
event.outcome:(Success or success)