Vectra Create Incident Based on Tag for Hosts

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Id	8b7a1a64-8ef2-4000-b8c9-9bca3b93aace
Rulename	Vectra Create Incident Based on Tag for Hosts
Description	Create an incident when the host entity presents a specific tag. If the tag is present, an incident should be created and marked with highest priority.
Severity	High
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/Create_Incident_Based_On_Tag_For_Host_Entity.yaml
Version	1.0.0
Arm template	8b7a1a64-8ef2-4000-b8c9-9bca3b93aace.json

KQL

Entities_Data_CL
| where type_s == "host"
| extend Tags = todynamic(tags_s)
| where set_has_element(Tags, "MDR - Customer Escalation")
| summarize arg_max(['last_modified_timestamp_t'], *) by ['name_s']

YAML

kind: Scheduled
customDetails:
  attack_profile: attack_profile_s
  entity_id: id_d
  entity_type: type_s
  ip_address: ip_s
  entity_importance: entity_importance_d
  tags: tags_s
suppressionDuration: PT1H
entityMappings:
- entityType: Host
  fieldMappings:
  - columnName: name_s
    identifier: HostName
description: Create an incident when the host entity presents a specific tag. If the tag is present, an incident should be created and marked with highest priority.
severity: High
queryFrequency: 10m
incidentConfiguration:
  groupingConfiguration:
    reopenClosedIncident: false
    lookbackDuration: P7D
    matchingMethod: AllEntities
    enabled: true
    groupByEntities:
    - Host
    groupByAlertDetails:
    - DisplayName
  createIncident: true
triggerThreshold: 0
relevantTechniques:
- T1546
eventGroupingSettings:
  aggregationKind: AlertPerResult
suppressionEnabled: false
status: Available
version: 1.0.0
name: Vectra Create Incident Based on Tag for Hosts
id: 8b7a1a64-8ef2-4000-b8c9-9bca3b93aace
query: |
  Entities_Data_CL
  | where type_s == "host"
  | extend Tags = todynamic(tags_s)
  | where set_has_element(Tags, "MDR - Customer Escalation")
  | summarize arg_max(['last_modified_timestamp_t'], *) by ['name_s']  
requiredDataConnectors:
- dataTypes:
  - Entities_Data_CL
  connectorId: VectraXDR
tactics:
- Persistence
alertDetailsOverride:
  alertDisplayNameFormat: Vectra AI Incident- {{name_s}}
  alertDescriptionFormat: An incident has been escalated for Vectra AI entity {{name_s}} that is presenting an urgency score of {{urgency_score_d}}
  alertDynamicProperties:
  - value: url_s
    alertProperty: AlertLink
triggerOperator: GreaterThan
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra XDR/Analytic Rules/Create_Incident_Based_On_Tag_For_Host_Entity.yaml
queryPeriod: 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/8b7a1a64-8ef2-4000-b8c9-9bca3b93aace')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/8b7a1a64-8ef2-4000-b8c9-9bca3b93aace')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "An incident has been escalated 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": "8b7a1a64-8ef2-4000-b8c9-9bca3b93aace",
        "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 the host entity presents a specific tag. If the tag is present, an incident should be created and marked with highest priority.",
        "displayName": "Vectra Create Incident Based on Tag for Hosts",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "name_s",
                "identifier": "HostName"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": true,
            "groupByAlertDetails": [
              "DisplayName"
            ],
            "groupByEntities": [
              "Host"
            ],
            "lookbackDuration": "P7D",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra XDR/Analytic Rules/Create_Incident_Based_On_Tag_For_Host_Entity.yaml",
        "query": "Entities_Data_CL\n| where type_s == \"host\"\n| extend Tags = todynamic(tags_s)\n| where set_has_element(Tags, \"MDR - Customer Escalation\")\n| summarize arg_max(['last_modified_timestamp_t'], *) by ['name_s']\n",
        "queryFrequency": "PT10M",
        "queryPeriod": "PT10M",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Persistence"
        ],
        "techniques": [
          "T1546"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}