Google DNS - Multiple errors for source

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Id	7e81a935-5e91-45a5-92fd-3b58c180513b
Rulename	Google DNS - Multiple errors for source
Description	Detects multiple errors for the same source IP address.
Severity	Medium
Tactics	CommandAndControl
Techniques	T1095
Required data connectors	GCPDNSDataConnector
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/GoogleCloudPlatformDNS/Analytic Rules/GCPDNSMultipleErrorsFromIp.yaml
Version	1.0.0
Arm template	7e81a935-5e91-45a5-92fd-3b58c180513b.json

KQL

let threshold = 10;
let err = dynamic(['NXDOMAIN', 'SERVFAIL', 'REFUSED']);
GCPCloudDNS
| where EventResultDetails in~ (err)
| summarize count() by SrcIpAddr, bin(TimeGenerated, 10m)
| where count_ > threshold
| extend IPCustomEntity = SrcIpAddr

YAML

name: Google DNS - Multiple errors for source
id: 7e81a935-5e91-45a5-92fd-3b58c180513b
description: |
    'Detects multiple errors for the same source IP address.'
triggerThreshold: 0
entityMappings:
- fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
  entityType: IP
version: 1.0.0
triggerOperator: gt
query: |
  let threshold = 10;
  let err = dynamic(['NXDOMAIN', 'SERVFAIL', 'REFUSED']);
  GCPCloudDNS
  | where EventResultDetails in~ (err)
  | summarize count() by SrcIpAddr, bin(TimeGenerated, 10m)
  | where count_ > threshold
  | extend IPCustomEntity = SrcIpAddr  
tactics:
- CommandAndControl
kind: Scheduled
queryFrequency: 1h
severity: Medium
queryPeriod: 1h
requiredDataConnectors:
- dataTypes:
  - GCPCloudDNS
  connectorId: GCPDNSDataConnector
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/GoogleCloudPlatformDNS/Analytic Rules/GCPDNSMultipleErrorsFromIp.yaml
relevantTechniques:
- T1095

ARM