Vectra Create Incident Based on Priority for Hosts

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Id	9b51b0fb-0419-4450-9ea0-0a48751c4902
Rulename	Vectra Create Incident Based on Priority for Hosts
Description	Create an incident when an identity is suspected to be compromised. Vectra is using AI to prioritize an entity based on multiple factors (attack rating, velocity, breadth, importance.etc.). This layer of aggregation at the entity level provides a greater signal-to-noise ratio and help analyst focus on what matters.
Severity	Medium
Tactics	Persistence
Techniques	T1546
Required data connectors	VectraXDR
Kind	Scheduled
Query frequency	10m
Query period	10m
Trigger threshold	0
Trigger operator	GreaterThan
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra XDR/Analytic Rules/Priority_Host.yaml
Version	1.1.1
Arm template	9b51b0fb-0419-4450-9ea0-0a48751c4902.json

KQL

Entities_Data_CL
| where entity_type == "host" and is_prioritized == true
| summarize arg_max(['last_modified_timestamp'], *) by ['name']

YAML

triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra XDR/Analytic Rules/Priority_Host.yaml
severity: Medium
triggerOperator: GreaterThan
tactics:
- Persistence
eventGroupingSettings:
  aggregationKind: AlertPerResult
version: 1.1.1
entityMappings:
- entityType: Host
  fieldMappings:
  - columnName: name
    identifier: HostName
customDetails:
  entity_type: entity_type
  attack_profile: attack_profile
  entity_id: id
  tags: tags
  ip_address: ip
description: Create an incident when an identity is suspected to be compromised. Vectra is using AI to prioritize an entity based on multiple factors (attack rating, velocity, breadth, importance.etc.). This layer of aggregation at the entity level provides a greater signal-to-noise ratio and help analyst focus on what matters.
kind: Scheduled
status: Available
queryFrequency: 10m
requiredDataConnectors:
- connectorId: VectraXDR
  dataTypes:
  - Entities_Data_CL
queryPeriod: 10m
suppressionDuration: PT1H
query: |
  Entities_Data_CL
  | where entity_type == "host" and is_prioritized == true
  | summarize arg_max(['last_modified_timestamp'], *) by ['name']  
suppressionEnabled: false
alertDetailsOverride:
  alertDescriptionFormat: An incident has been generated for Vectra AI entity {{name}} that is presenting an urgency score of {{urgency_score}}.
  alertDisplayNameFormat: Vectra AI Incident- {{name}}
  alertDynamicProperties:
  - value: url
    alertProperty: AlertLink
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: P7D
    enabled: true
    reopenClosedIncident: true
    matchingMethod: AllEntities
name: Vectra Create Incident Based on Priority for Hosts
id: 9b51b0fb-0419-4450-9ea0-0a48751c4902
relevantTechniques:
- T1546

ARM