Azure Virtual Network Device Modified or Deletededit
Identifies when a virtual network device is being modified or deleted. This can be a network virtual appliance, virtual hub, or virtual router.
Rule type: query
Rule indices:
- filebeat-*
- logs-azure*
Severity: low
Risk score: 21
Runs every: 5 minutes
Searches indices from: now-25m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Elastic
- Cloud
- Azure
- Continuous Monitoring
- SecOps
- Network Security
Version: 1
Added (Elastic Stack release): 7.16.0
Rule authors: Austin Songer
Rule license: Elastic License v2
Potential false positivesedit
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.
Investigation guideedit
## Config The Azure Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.
Rule queryedit
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)
Threat mappingedit
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Impact
- ID: TA0040
- Reference URL: https://attack.mitre.org/tactics/TA0040/