Ubiquiti - Connection to known malicious IP or C2

let malicious_ips =
ThreatIntelligenceIndicator
| where isnotempty(NetworkIP)
| summarize make_list(NetworkIP);
UbiquitiAuditEvent
| where EventCategory =~ 'firewall'
| where ipv4_is_private(SrcIpAddr)
| where ipv4_is_private(DstIpAddr) == 'False'
| where DstIpAddr in (malicious_ips)
| where DvcAction =~ 'Accepted' or DvcAction =~ 'Other'
| extend IPCustomEntity = SrcIpAddr

entityMappings:
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: IPCustomEntity
name: Ubiquiti - Connection to known malicious IP or C2
tactics:
- Exfiltration
- CommandAndControl
severity: Medium
triggerThreshold: 0
relevantTechniques:
- T1071
- T1571
- T1572
id: db60ca0b-b668-439b-b889-b63b57ef20fb
version: 1.0.0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Ubiquiti UniFi/Analytic Rules/UbiquitiDestinationInTiList.yaml
queryFrequency: 1h
triggerOperator: gt
query: |
  let malicious_ips =
  ThreatIntelligenceIndicator
  | where isnotempty(NetworkIP)
  | summarize make_list(NetworkIP);
  UbiquitiAuditEvent
  | where EventCategory =~ 'firewall'
  | where ipv4_is_private(SrcIpAddr)
  | where ipv4_is_private(DstIpAddr) == 'False'
  | where DstIpAddr in (malicious_ips)
  | where DvcAction =~ 'Accepted' or DvcAction =~ 'Other'
  | extend IPCustomEntity = SrcIpAddr  
description: |
    'Detects allowed connections to IP addresses which are in TI list and are known to be malicious.'
requiredDataConnectors:
- connectorId: UbiquitiUnifi
  dataTypes:
  - UbiquitiAuditEvent
status: Available
queryPeriod: 14d
kind: Scheduled

{
  "$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/db60ca0b-b668-439b-b889-b63b57ef20fb')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/db60ca0b-b668-439b-b889-b63b57ef20fb')]",
      "properties": {
        "alertRuleTemplateName": "db60ca0b-b668-439b-b889-b63b57ef20fb",
        "customDetails": null,
        "description": "'Detects allowed connections to IP addresses which are in TI list and are known to be malicious.'\n",
        "displayName": "Ubiquiti - Connection to known malicious IP or C2",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IPCustomEntity",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Ubiquiti UniFi/Analytic Rules/UbiquitiDestinationInTiList.yaml",
        "query": "let malicious_ips =\nThreatIntelligenceIndicator\n| where isnotempty(NetworkIP)\n| summarize make_list(NetworkIP);\nUbiquitiAuditEvent\n| where EventCategory =~ 'firewall'\n| where ipv4_is_private(SrcIpAddr)\n| where ipv4_is_private(DstIpAddr) == 'False'\n| where DstIpAddr in (malicious_ips)\n| where DvcAction =~ 'Accepted' or DvcAction =~ 'Other'\n| extend IPCustomEntity = SrcIpAddr\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "P14D",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl",
          "Exfiltration"
        ],
        "techniques": [
          "T1071",
          "T1571",
          "T1572"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}