UniFi Site Manager Firmware version diversity within a model

Unifi_SiteManager_Devices_CL
| where TimeGenerated > ago(2h)
| summarize arg_max(TimeGenerated, *) by Id
| summarize Devices = count(),
            SampleDevice = take_any(Name),
            ['Distinct versions'] = make_set(Version),
            ['Up-to-date count'] = countif(FirmwareStatus =~ "upToDate")
            by Model = Model
| extend ['Version count'] = array_length(['Distinct versions'])
| where ['Version count'] > 1
| order by ['Version count'] desc, Devices desc

id: 2b0ca272-72fd-c2c2-6728-7f287c22e275
requiredDataConnectors:
- connectorId: UniFiSiteManagerConnectorDefinition
  dataTypes:
  - Unifi_SiteManager_Devices_CL
description: |
  Models running multiple distinct firmware versions across the estate. Indicates inconsistent patch management - some units are forgotten or excluded from update windows.
name: 'UniFi Site Manager: Firmware version diversity within a model'
version: 1.0.0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/UniFi%20Site%20Manager%20%28CCF%29/Hunting%20Queries/UniFiCloudFirmwareVersionDiversity.yaml
entityMappings:
- fieldMappings:
  - identifier: HostName
    columnName: SampleDevice
  entityType: Host
tactics:
- Reconnaissance
kind: HuntingQuery
relevantTechniques:
- T1595
query: |
  Unifi_SiteManager_Devices_CL
  | where TimeGenerated > ago(2h)
  | summarize arg_max(TimeGenerated, *) by Id
  | summarize Devices = count(),
              SampleDevice = take_any(Name),
              ['Distinct versions'] = make_set(Version),
              ['Up-to-date count'] = countif(FirmwareStatus =~ "upToDate")
              by Model = Model
  | extend ['Version count'] = array_length(['Distinct versions'])
  | where ['Version count'] > 1
  | order by ['Version count'] desc, Devices desc

{
  "$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/2b0ca272-72fd-c2c2-6728-7f287c22e275')]",
      "kind": "Huntingquery",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/2b0ca272-72fd-c2c2-6728-7f287c22e275')]",
      "properties": {
        "alertRuleTemplateName": "2b0ca272-72fd-c2c2-6728-7f287c22e275",
        "customDetails": null,
        "description": "Models running multiple distinct firmware versions across the estate. Indicates inconsistent patch management - some units are forgotten or excluded from update windows.\n",
        "displayName": "UniFi Site Manager: Firmware version diversity within a model",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "SampleDevice",
                "identifier": "HostName"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/UniFi%20Site%20Manager%20%28CCF%29/Hunting%20Queries/UniFiCloudFirmwareVersionDiversity.yaml",
        "query": "Unifi_SiteManager_Devices_CL\n| where TimeGenerated > ago(2h)\n| summarize arg_max(TimeGenerated, *) by Id\n| summarize Devices = count(),\n            SampleDevice = take_any(Name),\n            ['Distinct versions'] = make_set(Version),\n            ['Up-to-date count'] = countif(FirmwareStatus =~ \"upToDate\")\n            by Model = Model\n| extend ['Version count'] = array_length(['Distinct versions'])\n| where ['Version count'] > 1\n| order by ['Version count'] desc, Devices desc\n",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Reconnaissance"
        ],
        "techniques": [
          "T1595"
        ],
        "templateVersion": "1.0.0"
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}