Cyble Vision Alerts Discovered Subdomain

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Id	7a0f79cc-8d28-44b5-ac1e-6176565bb7b8
Rulename	Cyble Vision Alerts Discovered Subdomain
Description	Triggers when a new subdomain is detected for a monitored keyword/domain.
Severity	Low
Tactics	Reconnaissance
Techniques	T1595
Required data connectors	CybleVisionAlerts
Kind	Scheduled
Query frequency	30m
Query period	30m
Trigger threshold	0
Trigger operator	GreaterThan
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyble Vision/Analytic Rules/Alerts_subdomains_rule.yaml
Version	1.0.0
Arm template	7a0f79cc-8d28-44b5-ac1e-6176565bb7b8.json

KQL

Alerts_subdomains  
| where Service == "subdomains" 
| extend MappedSeverity = Severity

YAML

name: Cyble Vision Alerts Discovered Subdomain
query: |
  Alerts_subdomains  
  | where Service == "subdomains" 
  | extend MappedSeverity = Severity  
enabled: true
entityMappings:
- entityType: DNS
  fieldMappings:
  - columnName: SD_Subdomain
    identifier: DomainName
queryPeriod: 30m
version: 1.0.0
tactics:
- Reconnaissance
triggerOperator: GreaterThan
kind: Scheduled
triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyble Vision/Analytic Rules/Alerts_subdomains_rule.yaml
eventGroupingSettings:
  aggregationKind: AlertPerResult
incidentConfiguration:
  alertDetailsOverride: 
  alertDescriptionFormat: |
        A new subdomain was discovered for monitored domain/keyword. Keyword {{SD_KeywordName}} Bucket {{SD_BucketName}} Severity {{MappedSeverity}} This may represent new attack surface exposure or infrastructure expansion.
  alertDisplayNameFormat: New Subdomain Detected {{SD_Subdomain}}
  createIncident: true
  groupingConfiguration:
    enabled: false
    reopenClosedIncident: false
    lookbackDuration: PT5H
    matchingMethod: AllEntities
relevantTechniques:
- T1595
id: 7a0f79cc-8d28-44b5-ac1e-6176565bb7b8
customDetails:
  MappedSeverity: Severity
  SD_EntityID: EntityID
  AlertID: AlertID
  SD_BucketName: BucketName
  SD_Subdomain: SD_Subdomain
  Status: Status
  SD_KeywordName: KeywordName
  Service: Service
severity: Low
requiredDataConnectors:
- connectorId: CybleVisionAlerts
  dataTypes:
  - CybleVisionAlerts_CL
status: Available
description: |
    'Triggers when a new subdomain is detected for a monitored keyword/domain.'
queryfrequency: 30m

ARM