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

Back


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

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

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"
    }
  ]
}