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	1.0.1
Arm template	9b51b0fb-0419-4450-9ea0-0a48751c4902.json

KQL

Entities_Data_CL
| where type_s == "host" and is_prioritized_b == true
| summarize arg_max(['last_modified_timestamp_t'], *) by ['name_s']

YAML

suppressionDuration: PT1H
status: Available
relevantTechniques:
- T1546
suppressionEnabled: false
customDetails:
  ip_address: ip_s
  entity_type: type_s
  entity_id: id_d
  tags: tags_s
  attack_profile: attack_profile_s
  entity_importance: entity_importance_d
queryPeriod: 10m
kind: Scheduled
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra XDR/Analytic Rules/Priority_Host.yaml
alertDetailsOverride:
  alertDisplayNameFormat: Vectra AI Incident- {{name_s}}
  alertDescriptionFormat: An incident has been generated for Vectra AI entity {{name_s}} that is presenting an urgency score of {{urgency_score_d}}.
  alertDynamicProperties:
  - value: url_s
    alertProperty: AlertLink
query: |
  Entities_Data_CL
  | where type_s == "host" and is_prioritized_b == true
  | summarize arg_max(['last_modified_timestamp_t'], *) by ['name_s']  
version: 1.0.1
id: 9b51b0fb-0419-4450-9ea0-0a48751c4902
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.
tactics:
- Persistence
eventGroupingSettings:
  aggregationKind: AlertPerResult
entityMappings:
- fieldMappings:
  - identifier: HostName
    columnName: name_s
  entityType: Host
requiredDataConnectors:
- dataTypes:
  - Entities_Data_CL
  connectorId: VectraXDR
name: Vectra Create Incident Based on Priority for Hosts
severity: Medium
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    enabled: true
    lookbackDuration: P7D
    matchingMethod: AllEntities
    reopenClosedIncident: true
triggerOperator: GreaterThan
triggerThreshold: 0
queryFrequency: 10m

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_s}} that is presenting an urgency score of {{urgency_score_d}}.",
          "alertDisplayNameFormat": "Vectra AI Incident- {{name_s}}",
          "alertDynamicProperties": [
            {
              "alertProperty": "AlertLink",
              "value": "url_s"
            }
          ]
        },
        "alertRuleTemplateName": "9b51b0fb-0419-4450-9ea0-0a48751c4902",
        "customDetails": {
          "attack_profile": "attack_profile_s",
          "entity_id": "id_d",
          "entity_importance": "entity_importance_d",
          "entity_type": "type_s",
          "ip_address": "ip_s",
          "tags": "tags_s"
        },
        "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_s",
                "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 XDR/Analytic Rules/Priority_Host.yaml",
        "query": "Entities_Data_CL\n| where type_s == \"host\" and is_prioritized_b == true\n| summarize arg_max(['last_modified_timestamp_t'], *) by ['name_s']\n",
        "queryFrequency": "PT10M",
        "queryPeriod": "PT10M",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Persistence"
        ],
        "techniques": [
          "T1546"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}