Vectra Create Incident Based on Priority for Hosts | Microsoft Sentinel Analytic Rules

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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%20XDR/Analytic%20Rules/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

severity: Medium
tactics:
- Persistence
queryFrequency: 10m
id: 9b51b0fb-0419-4450-9ea0-0a48751c4902
query: |
  Entities_Data_CL
  | where entity_type == "host" and is_prioritized == true
  | summarize arg_max(['last_modified_timestamp'], *) by ['name']
suppressionDuration: PT1H
incidentConfiguration:
  groupingConfiguration:
    lookbackDuration: P7D
    matchingMethod: AllEntities
    reopenClosedIncident: true
    enabled: true
  createIncident: true
customDetails:
  entity_type: entity_type
  entity_id: id
  tags: tags
  attack_profile: attack_profile
  ip_address: ip
kind: Scheduled
queryPeriod: 10m
alertDetailsOverride:
  alertDisplayNameFormat: Vectra AI Incident- {{name}}
  alertDescriptionFormat: An incident has been generated for Vectra AI entity {{name}} that is presenting an urgency score of {{urgency_score}}.
  alertDynamicProperties:
  - alertProperty: AlertLink
    value: url
entityMappings:
- fieldMappings:
  - identifier: HostName
    columnName: name
  entityType: Host
triggerOperator: GreaterThan
version: 1.1.1
status: Available
requiredDataConnectors:
- dataTypes:
  - Entities_Data_CL
  connectorId: VectraXDR
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.
relevantTechniques:
- T1546
name: Vectra Create Incident Based on Priority for Hosts
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra%20XDR/Analytic%20Rules/Priority_Host.yaml
triggerThreshold: 0
suppressionEnabled: false
eventGroupingSettings:
  aggregationKind: AlertPerResult

ARM

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/9b51b0fb-0419-4450-9ea0-0a48751c4902')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/9b51b0fb-0419-4450-9ea0-0a48751c4902')]",
      "properties": {
        "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": [
            {
              "alertProperty": "AlertLink",
              "value": "url"
            }
          ]
        },
        "alertRuleTemplateName": "9b51b0fb-0419-4450-9ea0-0a48751c4902",
        "customDetails": {
          "attack_profile": "attack_profile",
          "entity_id": "id",
          "entity_type": "entity_type",
          "ip_address": "ip",
          "tags": "tags"
        },
        "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.",
        "displayName": "Vectra Create Incident Based on Priority for Hosts",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "name",
                "identifier": "HostName"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": true,
            "lookbackDuration": "P7D",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": true
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra%20XDR/Analytic%20Rules/Priority_Host.yaml",
        "query": "Entities_Data_CL\n| where entity_type == \"host\" and is_prioritized == true\n| summarize arg_max(['last_modified_timestamp'], *) by ['name']\n",
        "queryFrequency": "PT10M",
        "queryPeriod": "PT10M",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Persistence"
        ],
        "techniques": [
          "T1546"
        ],
        "templateVersion": "1.1.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}