{
  "$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/4992d2f3-d6c0-4271-adac-b23532ba4492')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/4992d2f3-d6c0-4271-adac-b23532ba4492')]",
      "properties": {
        "alertRuleTemplateName": "4992d2f3-d6c0-4271-adac-b23532ba4492",
        "customDetails": null,
        "description": "Identifies a match in AzureFirewall (NetworkRule & ApplicationRule Logs) from any IP IOC from TI\n",
        "displayName": "TI Map IP entity to AzureFirewall",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "TI_ipEntity",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "URL",
            "fieldMappings": [
              {
                "columnName": "TargetUrl",
                "identifier": "Url"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Threat%20Intelligence%20%28NEW%29/Analytic%20Rules/IPEntity_AzureFirewall.yaml",
        "query": "let dt_lookBack = 1h; // Look back 1 hour for AzureDiagnostics logs\nlet ioc_lookBack = 14d; // Look back 14 days for threat intelligence indicators\n// Fetch threat intelligence indicators related to IP addresses\nlet IP_Indicators = ThreatIntelIndicators\n//extract key part of kv pair\n     | extend IndicatorType = replace(@\"\\[|\\]|\\\"\"\", \"\", tostring(split(ObservableKey, \":\", 0)))\n     | where IndicatorType in (\"ipv4-addr\", \"ipv6-addr\", \"network-traffic\")\n     | extend NetworkSourceIP = toupper(ObservableValue)\n     | extend TrafficLightProtocolLevel = tostring(parse_json(AdditionalFields).TLPLevel)\n  // Filter out indicators without relevant IP address fields\n  | where TimeGenerated >= ago(ioc_lookBack)\n  // Select the IP entity based on availability of different IP fields\n  | extend TI_ipEntity = iff(isnotempty(NetworkSourceIP), NetworkSourceIP, NetworkSourceIP)\n  | extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(NetworkSourceIP), NetworkSourceIP, TI_ipEntity)\n  // Exclude local addresses using the ipv4_is_private operator and filtering out specific address prefixes\n  | where ipv4_is_private(TI_ipEntity) == false and  TI_ipEntity !startswith \"fe80\" and TI_ipEntity !startswith \"::\" and TI_ipEntity !startswith \"127.\"\n  | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by Id, ObservableValue\n  | where IsActive and (ValidUntil > now() or isempty(ValidUntil));\n// Perform a join between IP indicators and AzureDiagnostics logs to identify potential malicious activity\nIP_Indicators\n   | project-reorder *, Tags, TrafficLightProtocolLevel, NetworkSourceIP, Type, TI_ipEntity\n  // Use innerunique to keep performance fast and result set low, as we only need one match to indicate potential malicious activity that needs investigation\n  | join kind=innerunique (\n      union AZFWApplicationRule, AZFWNetworkRule\n      | where TimeGenerated >= ago(dt_lookBack)\n      //| where OperationName in (\"AzureFirewallApplicationRuleLog\", \"AzureFirewallNetworkRuleLog\")\n      | parse kind=regex flags=U ActionReason with Protocol 'request from ' SourceHost 'to ' DestinationHost @'\\.? Action: ' Firewall_Action @'\\.' Rest_msg\n      | extend SourceAddress = SourceIp\n      | extend DestinationAddress = DestinationIp\n      | extend RemoteIP = case(not(ipv4_is_private(DestinationAddress)), DestinationAddress, not(ipv4_is_private(SourceAddress)), SourceAddress, \"\")\n      | where isnotempty(RemoteIP) // Filter out traffic involving public addresses only\n      | extend Firewall_Action = Action\n      | project-rename AzureFirewall_TimeGenerated = TimeGenerated\n  )\n  on $left.TI_ipEntity == $right.RemoteIP\n  // Filter out logs that occurred after the expiration of the corresponding indicator\n  | where AzureFirewall_TimeGenerated < ValidUntil\n  // Group the results by IndicatorId and RemoteIP, and keep the log entry with the latest timestamp\n  | summarize AzureFirewall_TimeGenerated = arg_max(AzureFirewall_TimeGenerated, *) by Id, RemoteIP\n  // Select the desired output fields\n  | extend Description = tostring(parse_json(Data).description)\n  | extend ActivityGroupNames = extract(@\"ActivityGroup:(\\S+)\", 1, tostring(parse_json(Data).labels))\n  | project LatestIndicatorTime, Description, ActivityGroupNames, Id, ValidUntil, Confidence,\n    AzureFirewall_TimeGenerated, TI_ipEntity, ActionReason, SourceAddress, DestinationAddress, Firewall_Action, Protocol,\n    NetworkSourceIP, Type, TargetUrl\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "P14D",
        "severity": "Medium",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl"
        ],
        "techniques": [
          "T1071"
        ],
        "templateVersion": "1.3.8",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}