UniFi Site Manager Devices adopted outside business hours

Unifi_SiteManager_Devices_CL
| where TimeGenerated > ago(30d)
| summarize arg_max(TimeGenerated, *) by Id
| where isnotempty(AdoptionTime)
| extend AdoptedAt = todatetime(AdoptionTime),
         AdoptedHour = hourofday(todatetime(AdoptionTime)),
         AdoptedDow = dayofweek(todatetime(AdoptionTime))
| where (AdoptedHour < 6 or AdoptedHour >= 22) or AdoptedDow in (0d, 6d)
| project HostName=Name, Model=Model, ['Product line']=ProductLine, AdoptedAt, AdoptedHour, IPAddress=Ip
| order by AdoptedAt desc

OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/UniFi%20Site%20Manager%20%28CCF%29/Hunting%20Queries/UniFiCloudOffHoursDeviceAdoption.yaml
name: 'UniFi Site Manager: Devices adopted outside business hours'
version: 1.0.0
id: 77bba2d0-92e1-408d-9e43-2d6e5e81538e
kind: HuntingQuery
query: |
  Unifi_SiteManager_Devices_CL
  | where TimeGenerated > ago(30d)
  | summarize arg_max(TimeGenerated, *) by Id
  | where isnotempty(AdoptionTime)
  | extend AdoptedAt = todatetime(AdoptionTime),
           AdoptedHour = hourofday(todatetime(AdoptionTime)),
           AdoptedDow = dayofweek(todatetime(AdoptionTime))
  | where (AdoptedHour < 6 or AdoptedHour >= 22) or AdoptedDow in (0d, 6d)
  | project HostName=Name, Model=Model, ['Product line']=ProductLine, AdoptedAt, AdoptedHour, IPAddress=Ip
  | order by AdoptedAt desc
relevantTechniques:
- T1098
requiredDataConnectors:
- dataTypes:
  - Unifi_SiteManager_Devices_CL
  connectorId: UniFiSiteManagerConnectorDefinition
entityMappings:
- entityType: Host
  fieldMappings:
  - columnName: HostName
    identifier: HostName
- entityType: IP
  fieldMappings:
  - columnName: IPAddress
    identifier: Address
description: |
  New devices adopted into a UniFi site outside business hours (10pm - 6am local time, or weekends). Legitimate admin work usually happens in hours; unattended adoption can be unauthorised hardware joining the network.
tactics:
- Persistence

{
  "$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/77bba2d0-92e1-408d-9e43-2d6e5e81538e')]",
      "kind": "Huntingquery",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/77bba2d0-92e1-408d-9e43-2d6e5e81538e')]",
      "properties": {
        "alertRuleTemplateName": "77bba2d0-92e1-408d-9e43-2d6e5e81538e",
        "customDetails": null,
        "description": "New devices adopted into a UniFi site outside business hours (10pm - 6am local time, or weekends). Legitimate admin work usually happens in hours; unattended adoption can be unauthorised hardware joining the network.\n",
        "displayName": "UniFi Site Manager: Devices adopted outside business hours",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "HostName",
                "identifier": "HostName"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IPAddress",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/UniFi%20Site%20Manager%20%28CCF%29/Hunting%20Queries/UniFiCloudOffHoursDeviceAdoption.yaml",
        "query": "Unifi_SiteManager_Devices_CL\n| where TimeGenerated > ago(30d)\n| summarize arg_max(TimeGenerated, *) by Id\n| where isnotempty(AdoptionTime)\n| extend AdoptedAt = todatetime(AdoptionTime),\n         AdoptedHour = hourofday(todatetime(AdoptionTime)),\n         AdoptedDow = dayofweek(todatetime(AdoptionTime))\n| where (AdoptedHour < 6 or AdoptedHour >= 22) or AdoptedDow in (0d, 6d)\n| project HostName=Name, Model=Model, ['Product line']=ProductLine, AdoptedAt, AdoptedHour, IPAddress=Ip\n| order by AdoptedAt desc\n",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Persistence"
        ],
        "techniques": [
          "T1098"
        ],
        "templateVersion": "1.0.0"
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}