Vectra AI Detect - New Campaign Detected

CommonSecurityLog
| where DeviceVendor == "Vectra Networks"
| where DeviceProduct == "X Series"
| where DeviceEventClassID contains "campaign"
| where DeviceAction == "START"
| extend reason = coalesce(
                          column_ifexists("Reason", ""), 
                          extract("reason=(.+?)($|;)", 1, AdditionalExtensions),
                          ""
                      )
| project-rename vectra_URL = DeviceCustomString4
| project Activity,SourceHostName, reason, vectra_URL
| extend HostCustomEntity = SourceHostName

severity: Medium
triggerThreshold: 0
query: |
  CommonSecurityLog
  | where DeviceVendor == "Vectra Networks"
  | where DeviceProduct == "X Series"
  | where DeviceEventClassID contains "campaign"
  | where DeviceAction == "START"
  | extend reason = coalesce(
                            column_ifexists("Reason", ""), 
                            extract("reason=(.+?)($|;)", 1, AdditionalExtensions),
                            ""
                        )
  | project-rename vectra_URL = DeviceCustomString4
  | project Activity,SourceHostName, reason, vectra_URL
  | extend HostCustomEntity = SourceHostName  
queryFrequency: 1h
requiredDataConnectors:
- connectorId: AIVectraDetect
  dataTypes:
  - CommonSecurityLog
id: a34d0338-eda0-42b5-8b93-32aae0d7a501
version: 1.1.3
name: Vectra AI Detect - New Campaign Detected
kind: Scheduled
status: Available
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra AI Detect/Analytic Rules/VectraDetect-NewCampaign.yaml
queryPeriod: 1h
relevantTechniques: 
triggerOperator: gt
tactics:
- LateralMovement
- CommandAndControl
description: |
    'Identifies when a new Campaign has been detected.  This occurs when multiple Detections accross different Hosts are suspected to be part of the same Attack Campaign.'
entityMappings:
- entityType: Host
  fieldMappings:
  - identifier: HostName
    columnName: HostCustomEntity

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/a34d0338-eda0-42b5-8b93-32aae0d7a501')]",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/a34d0338-eda0-42b5-8b93-32aae0d7a501')]",
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
      "kind": "Scheduled",
      "apiVersion": "2022-11-01",
      "properties": {
        "displayName": "Vectra AI Detect - New Campaign Detected",
        "description": "'Identifies when a new Campaign has been detected.  This occurs when multiple Detections accross different Hosts are suspected to be part of the same Attack Campaign.'\n",
        "severity": "Medium",
        "enabled": true,
        "query": "CommonSecurityLog\n| where DeviceVendor == \"Vectra Networks\"\n| where DeviceProduct == \"X Series\"\n| where DeviceEventClassID contains \"campaign\"\n| where DeviceAction == \"START\"\n| extend reason = coalesce(\n                          column_ifexists(\"Reason\", \"\"), \n                          extract(\"reason=(.+?)($|;)\", 1, AdditionalExtensions),\n                          \"\"\n                      )\n| project-rename vectra_URL = DeviceCustomString4\n| project Activity,SourceHostName, reason, vectra_URL\n| extend HostCustomEntity = SourceHostName\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0,
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "LateralMovement",
          "CommandAndControl"
        ],
        "techniques": null,
        "alertRuleTemplateName": "a34d0338-eda0-42b5-8b93-32aae0d7a501",
        "customDetails": null,
        "entityMappings": [
          {
            "fieldMappings": [
              {
                "columnName": "HostCustomEntity",
                "identifier": "HostName"
              }
            ],
            "entityType": "Host"
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Vectra AI Detect/Analytic Rules/VectraDetect-NewCampaign.yaml",
        "templateVersion": "1.1.3",
        "status": "Available"
      }
    }
  ]
}