Ubiquiti - connection to non-corporate DNS server

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Id	fe232837-9bdc-4e2b-8c08-cdac2610eed3
Rulename	Ubiquiti - connection to non-corporate DNS server
Description	Detects connections to non-corporate DNS servers.
Severity	Medium
Tactics	CommandAndControl Exfiltration
Techniques	T1572 T1041
Required data connectors	CustomLogsAma
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Ubiquiti UniFi/Analytic Rules/UbiquitiNonCorpDns.yaml
Version	1.0.2
Arm template	fe232837-9bdc-4e2b-8c08-cdac2610eed3.json

KQL

let corp_dns = dynamic(['127.0.0.2']);
UbiquitiAuditEvent
| where DstPortNumber == '53'
| where DstIpAddr !in (corp_dns)
| extend IPCustomEntity = SrcIpAddr

YAML

triggerOperator: gt
queryFrequency: 1h
requiredDataConnectors:
- connectorId: CustomLogsAma
  dataTypes:
  - Ubiquiti_CL
relevantTechniques:
- T1572
- T1041
entityMappings:
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: IPCustomEntity
query: |
  let corp_dns = dynamic(['127.0.0.2']);
  UbiquitiAuditEvent
  | where DstPortNumber == '53'
  | where DstIpAddr !in (corp_dns)
  | extend IPCustomEntity = SrcIpAddr  
triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Ubiquiti UniFi/Analytic Rules/UbiquitiNonCorpDns.yaml
queryPeriod: 1h
name: Ubiquiti - connection to non-corporate DNS server
status: Available
kind: Scheduled
description: |
    'Detects connections to non-corporate DNS servers.'
id: fe232837-9bdc-4e2b-8c08-cdac2610eed3
version: 1.0.2
tactics:
- CommandAndControl
- Exfiltration
severity: Medium

ARM