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

relevantTechniques:
- T1546
queryPeriod: 10m
requiredDataConnectors:
- dataTypes:
  - Entities_Data_CL
  connectorId: VectraXDR
kind: Scheduled
eventGroupingSettings:
  aggregationKind: AlertPerResult
alertDetailsOverride:
  alertDynamicProperties:
  - value: url
    alertProperty: AlertLink
  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}}
suppressionEnabled: false
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra XDR/Analytic Rules/Priority_Host.yaml
triggerThreshold: 0
version: 1.1.1
id: 9b51b0fb-0419-4450-9ea0-0a48751c4902
severity: Medium
name: Vectra Create Incident Based on Priority for Hosts
status: Available
entityMappings:
- entityType: Host
  fieldMappings:
  - identifier: HostName
    columnName: name
queryFrequency: 10m
triggerOperator: GreaterThan
query: |
  Entities_Data_CL
  | where entity_type == "host" and is_prioritized == true
  | summarize arg_max(['last_modified_timestamp'], *) by ['name']  
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    reopenClosedIncident: true
    enabled: true
    lookbackDuration: P7D
    matchingMethod: AllEntities
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.
suppressionDuration: PT1H
tactics:
- Persistence
customDetails:
  tags: tags
  attack_profile: attack_profile
  ip_address: ip
  entity_id: id
  entity_type: entity_type

ARM