Detection rules › Kusto
Google DNS - Request to dynamic DNS service
'Detects requests to ip lookup resources.'
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Command & Control |
Rule body
id: 09fc03e0-daec-4b22-8afa-4bba30d7e909
name: Google DNS - Request to dynamic DNS service
description: |
'Detects requests to ip lookup resources.'
severity: Medium
requiredDataConnectors:
- connectorId: GCPDNSDataConnector
dataTypes:
- GCPCloudDNS
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
- CommandAndControl
relevantTechniques:
- T1095
query: |
let dyndns = dynamic(['noip.com', 'dynu.com', 'dyn.com', 'dynv6.com']);
GCPCloudDNS
| where Query in~ (dyndns)
| extend DNSCustomEntity = Query, IPCustomEntity = SrcIpAddr
entityMappings:
- entityType: DNS
fieldMappings:
- identifier: DomainName
columnName: DNSCustomEntity
- entityType: IP
fieldMappings:
- identifier: Address
columnName: IPCustomEntity
version: 1.0.0
kind: Scheduled
Stages and Predicates
Parameters
let dyndns = dynamic(['noip.com', 'dynu.com', 'dyn.com', 'dynv6.com']);
Stage 1: source
GCPCloudDNS
Stage 2: where
| where Query in~ (dyndns)
Stage 3: extend
| extend DNSCustomEntity = Query, IPCustomEntity = SrcIpAddr
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
Query | in |
| field:"Query" kind:in |
Output fields
These fields are emitted when the rule matches.
| Field | Source |
|---|---|
DNSCustomEntity | extend |
IPCustomEntity | extend |