UniFi Site Manager ISP High Latency

// UniFi ISP High Latency Detection
let AvgLatencyThreshold = 200;
let MaxLatencyThreshold = 1000;
let SustainedPeriodCount = 2;
Unifi_SiteManager_ISPMetrics_CL
| where TimeGenerated > ago(30m)
| mv-expand period = Periods
| extend
    metricTime = todatetime(period.metricTime),
    avgLatency = toint(period.data.wan.avgLatency),
    maxLatency = toint(period.data.wan.maxLatency),
    ispName = tostring(period.data.wan.ispName),
    ispAsn = tostring(period.data.wan.ispAsn)
// De-duplicate Periods: each poll returns the same hour buckets, so collapse to latest value per metricTime
| summarize arg_max(TimeGenerated, avgLatency, maxLatency, ispAsn) by tostring(SiteId), ispName, metricTime
| where metricTime > ago(30m)
| where avgLatency > AvgLatencyThreshold or maxLatency > MaxLatencyThreshold
| summarize
    EventCount = count(),
    AvgLatency = avg(avgLatency),
    MaxLatency = max(maxLatency),
    FirstSeen = min(metricTime),
    LastSeen = max(metricTime)
    by SiteId, ispName, ispAsn
| where EventCount >= SustainedPeriodCount
| extend 
    TimeGenerated = now(),
    AvgLatencyRounded = round(AvgLatency, 1)
| project
    TimeGenerated,
    SiteId = SiteId,
    ISPName = ispName,
    ISPAsn = ispAsn,
    AvgLatencyMs = AvgLatencyRounded,
    MaxLatencyMs = MaxLatency,
    EventCount,
    FirstSeen,
    LastSeen

entityMappings:
- fieldMappings:
  - identifier: HostName
    columnName: SiteId
  entityType: Host
- fieldMappings:
  - identifier: Name
    columnName: ISPName
  entityType: CloudApplication
id: 77d8f6d0-b45c-ea6e-7c58-daac194a095f
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/UniFi%20Site%20Manager%20%28CCF%29/Analytic%20Rules/UniFiCloudISPHighLatency.yaml
triggerOperator: gt
tactics:
- Impact
kind: Scheduled
requiredDataConnectors:
- dataTypes:
  - Unifi_SiteManager_ISPMetrics_CL
  connectorId: UniFiSiteManagerConnectorDefinition
queryPeriod: 30m
severity: Medium
relevantTechniques:
- T1498
- T1499
triggerThreshold: 0
version: 1.0.1
name: 'UniFi Site Manager: ISP High Latency'
status: Available
subTechniques:
- T1498.001
- T1499.002
description: |
  Identifies when ISP latency exceeds acceptable thresholds, impacting VoIP quality, video conferencing, and overall application performance.
queryFrequency: 15m
query: |
  // UniFi ISP High Latency Detection
  let AvgLatencyThreshold = 200;
  let MaxLatencyThreshold = 1000;
  let SustainedPeriodCount = 2;
  Unifi_SiteManager_ISPMetrics_CL
  | where TimeGenerated > ago(30m)
  | mv-expand period = Periods
  | extend
      metricTime = todatetime(period.metricTime),
      avgLatency = toint(period.data.wan.avgLatency),
      maxLatency = toint(period.data.wan.maxLatency),
      ispName = tostring(period.data.wan.ispName),
      ispAsn = tostring(period.data.wan.ispAsn)
  // De-duplicate Periods: each poll returns the same hour buckets, so collapse to latest value per metricTime
  | summarize arg_max(TimeGenerated, avgLatency, maxLatency, ispAsn) by tostring(SiteId), ispName, metricTime
  | where metricTime > ago(30m)
  | where avgLatency > AvgLatencyThreshold or maxLatency > MaxLatencyThreshold
  | summarize
      EventCount = count(),
      AvgLatency = avg(avgLatency),
      MaxLatency = max(maxLatency),
      FirstSeen = min(metricTime),
      LastSeen = max(metricTime)
      by SiteId, ispName, ispAsn
  | where EventCount >= SustainedPeriodCount
  | extend 
      TimeGenerated = now(),
      AvgLatencyRounded = round(AvgLatency, 1)
  | project
      TimeGenerated,
      SiteId = SiteId,
      ISPName = ispName,
      ISPAsn = ispAsn,
      AvgLatencyMs = AvgLatencyRounded,
      MaxLatencyMs = MaxLatency,
      EventCount,
      FirstSeen,
      LastSeen
incidentConfiguration:
  groupingConfiguration:
    enabled: true
    lookbackDuration: PT4H
    reopenClosedIncident: false
    matchingMethod: AllEntities
  createIncident: true

{
  "$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/77d8f6d0-b45c-ea6e-7c58-daac194a095f')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/77d8f6d0-b45c-ea6e-7c58-daac194a095f')]",
      "properties": {
        "alertRuleTemplateName": "77d8f6d0-b45c-ea6e-7c58-daac194a095f",
        "customDetails": null,
        "description": "Identifies when ISP latency exceeds acceptable thresholds, impacting VoIP quality, video conferencing, and overall application performance.\n",
        "displayName": "UniFi Site Manager: ISP High Latency",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "SiteId",
                "identifier": "HostName"
              }
            ]
          },
          {
            "entityType": "CloudApplication",
            "fieldMappings": [
              {
                "columnName": "ISPName",
                "identifier": "Name"
              }
            ]
          }
        ],
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": true,
            "lookbackDuration": "PT4H",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/UniFi%20Site%20Manager%20%28CCF%29/Analytic%20Rules/UniFiCloudISPHighLatency.yaml",
        "query": "// UniFi ISP High Latency Detection\nlet AvgLatencyThreshold = 200;\nlet MaxLatencyThreshold = 1000;\nlet SustainedPeriodCount = 2;\nUnifi_SiteManager_ISPMetrics_CL\n| where TimeGenerated > ago(30m)\n| mv-expand period = Periods\n| extend\n    metricTime = todatetime(period.metricTime),\n    avgLatency = toint(period.data.wan.avgLatency),\n    maxLatency = toint(period.data.wan.maxLatency),\n    ispName = tostring(period.data.wan.ispName),\n    ispAsn = tostring(period.data.wan.ispAsn)\n// De-duplicate Periods: each poll returns the same hour buckets, so collapse to latest value per metricTime\n| summarize arg_max(TimeGenerated, avgLatency, maxLatency, ispAsn) by tostring(SiteId), ispName, metricTime\n| where metricTime > ago(30m)\n| where avgLatency > AvgLatencyThreshold or maxLatency > MaxLatencyThreshold\n| summarize\n    EventCount = count(),\n    AvgLatency = avg(avgLatency),\n    MaxLatency = max(maxLatency),\n    FirstSeen = min(metricTime),\n    LastSeen = max(metricTime)\n    by SiteId, ispName, ispAsn\n| where EventCount >= SustainedPeriodCount\n| extend \n    TimeGenerated = now(),\n    AvgLatencyRounded = round(AvgLatency, 1)\n| project\n    TimeGenerated,\n    SiteId = SiteId,\n    ISPName = ispName,\n    ISPAsn = ispAsn,\n    AvgLatencyMs = AvgLatencyRounded,\n    MaxLatencyMs = MaxLatency,\n    EventCount,\n    FirstSeen,\n    LastSeen\n",
        "queryFrequency": "PT15M",
        "queryPeriod": "PT30M",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Impact"
        ],
        "techniques": [
          "T1498",
          "T1499"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}