{
  "$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/8f3c1a4e-6b52-4d19-9c07-2a5e8d0f7b41')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/8f3c1a4e-6b52-4d19-9c07-2a5e8d0f7b41')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "{{IndicatorDomain}} was resolved from inside the estate. Datazag scored this indicator\nat confidence {{Confidence}}. Supporting evidence: {{IndicatorEvidence}}\n",
          "alertDisplayNameFormat": "Datazag: {{IndicatorDomain}} resolved from inside the estate"
        },
        "alertRuleTemplateName": "8f3c1a4e-6b52-4d19-9c07-2a5e8d0f7b41",
        "customDetails": {
          "DatazagAlertRef": "DatazagAlertRef",
          "DatazagConfidence": "Confidence",
          "DatazagEvidence": "IndicatorEvidence",
          "DatazagIndicatorRef": "IndicatorStixId",
          "IndicatorExpiry": "IndicatorValidUntil",
          "ObservedBy": "SeenBy",
          "ResolutionCount": "QueryCount"
        },
        "description": "Matches active Datazag impersonation indicators against DNS activity normalized by the ASIM\nDns schema, so the rule works across any normalized DNS source without modification. A match\nmeans a host inside the estate resolved a domain Datazag scored as brand impersonation,\nplatform impersonation or attacker infrastructure. Requires the ASIM DNS parsers.\n",
        "displayName": "Datazag - impersonation domain resolved in DNS",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "DNS",
            "fieldMappings": [
              {
                "columnName": "IndicatorDomain",
                "identifier": "DomainName"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "SourceIp",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "SourceHost",
                "identifier": "HostName"
              }
            ]
          },
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountUpn",
                "identifier": "FullName"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": true,
            "groupByEntities": [
              "DNS"
            ],
            "lookbackDuration": "P1D",
            "matchingMethod": "Selected",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Datazag/Analytic%20Rules/DatazagDomainIndicatorMatch_DNS.yaml",
        "query": "let datazag_identity = \"identity--55a5a448-c6f1-5128-bc71-4d85b719131e\";\nlet ioc_lookback = 14d;\nlet dns_lookback = 1h;\nlet confidence_floor = 85;\nlet DatazagDomains =\n    ThreatIntelIndicators\n    | where TimeGenerated >= ago(ioc_lookback)\n    | where tostring(Data.created_by_ref) == datazag_identity\n    | where ObservableKey == \"domain-name:value\"\n    | where isnotempty(ObservableValue)\n    | summarize arg_max(TimeGenerated, *) by Id\n    | where IsDeleted == false\n    | where tostring(Data.revoked) != \"true\"\n    | where isempty(ValidUntil) or ValidUntil > now()\n    | where Confidence >= confidence_floor\n    | extend IndicatorDomain = tolower(trim_end(@\"\\.\", ObservableValue))\n    | project\n        IndicatorDomain,\n        IndicatorStixId     = tostring(Data.id),\n        IndicatorRecordId   = Id,\n        DatazagAlertRef     = tostring(Data.external_references[0].external_id),\n        Confidence,\n        IndicatorEvidence   = tostring(Data.labels),\n        IndicatorValidUntil = ValidUntil;\nlet DnsActivity =\n    _Im_Dns\n    | where TimeGenerated >= ago(dns_lookback)\n    | where isnotempty(DnsQuery)\n    | extend IndicatorDomain = tolower(trim_end(@\"\\.\", DnsQuery))\n    | project\n        DnsTime         = TimeGenerated,\n        IndicatorDomain,\n        DnsQuery,\n        SrcIpAddr       = column_ifexists(\"SrcIpAddr\", \"\"),\n        SrcHostname     = column_ifexists(\"SrcHostname\", \"\"),\n        SrcUsername     = column_ifexists(\"SrcUsername\", \"\"),\n        SrcUsernameType = column_ifexists(\"SrcUsernameType\", \"\"),\n        EventVendor     = column_ifexists(\"EventVendor\", \"\"),\n        EventProduct    = column_ifexists(\"EventProduct\", \"\");\nDatazagDomains\n| join kind=innerunique DnsActivity on IndicatorDomain\n| summarize\n    FirstSeen   = min(DnsTime),\n    LastSeen    = max(DnsTime),\n    QueryCount  = count(),\n    SourceIps   = make_set(SrcIpAddr, 50),\n    SourceHosts = make_set(SrcHostname, 50),\n    Upns        = make_set_if(SrcUsername, SrcUsernameType == \"UPN\", 50),\n    SeenBy      = make_set(strcat(EventVendor, \" \", EventProduct), 10)\n    by\n    IndicatorDomain, IndicatorStixId, IndicatorRecordId, DatazagAlertRef,\n    Confidence, IndicatorEvidence, IndicatorValidUntil\n| extend\n    SourceIp   = tostring(SourceIps[0]),\n    SourceHost = tostring(SourceHosts[0]),\n    AccountUpn = tostring(Upns[0])\n| order by LastSeen desc\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "P14D",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl",
          "InitialAccess"
        ],
        "techniques": [
          "T1071",
          "T1566"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}