{
  "$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/8effd19a-abab-433a-9184-ae67ac51e6d0')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/8effd19a-abab-433a-9184-ae67ac51e6d0')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "Abnormal Security detected a {{AttackType}} attack from {{SenderEmail}} to {{RecipientEmail}}. See attack score and remediation status in the custom details.",
          "alertDisplayNameFormat": "Abnormal Security: {{AttackType}} email delivered to {{RecipientEmail}}"
        },
        "alertRuleTemplateName": "8effd19a-abab-433a-9184-ae67ac51e6d0",
        "customDetails": {
          "AbnormalPortalUrl": "PortalUrl",
          "AttackScore": "AttackScore",
          "AttackType": "AttackType",
          "RemediationStatus": "RemediationStatus"
        },
        "description": "'Identifies email attacks detected by Abnormal Security whose attack type maps to a\nhigh-risk category (credential phishing, Business Email Compromise, invoice/payment\nfraud, malware, extortion, sensitive-data phishing, internal account-takeover attacks,\nor scams). Lower-risk categories such as Spam, Graymail, and Reconnaissance are\nintentionally excluded. Use this to triage targeted email threats that reached a mailbox.'\n",
        "displayName": "Abnormal Security - High-risk email attack detected",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "RecipientEmail",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "MailMessage",
            "fieldMappings": [
              {
                "columnName": "RecipientEmail",
                "identifier": "Recipient"
              },
              {
                "columnName": "SenderEmail",
                "identifier": "Sender"
              },
              {
                "columnName": "MessageId",
                "identifier": "NetworkMessageId"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "SenderIP",
                "identifier": "Address"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": false,
            "lookbackDuration": "PT5H",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/AbnormalSecurity/Analytic%20Rules/AbnormalSecurity_HighRiskEmailAttack.yaml",
        "query": "ABNORMAL_SECURITY_THREAT_LOG_CL\n| where abx_body_abx_body_attack_type_s in~ (\n    \"Phishing: Credential\",\n    \"Social Engineering (BEC)\",\n    \"Invoice/Payment Fraud (BEC)\",\n    \"Malware\",\n    \"Extortion\",\n    \"Phishing: Sensitive Data\",\n    \"Internal-to-Internal Attacks (Email Account Takeover)\",\n    \"Scam\")\n| extend\n    RecipientEmail = abx_body_abx_body_recipient_address_s,\n    SenderEmail = abx_body_abx_body_from_address_s,\n    SenderName = abx_body_abx_body_from_name_s,\n    SenderIP = abx_body_abx_body_sender_ip_address_s,\n    Subject = abx_body_abx_body_subject_s,\n    MessageId = abx_body_abx_body_internet_message_id_s,\n    AttackType = abx_body_abx_body_attack_type_s,\n    AttackScore = abx_body_abx_body_attack_score_d,\n    RemediationStatus = abx_body_abx_body_remediation_status_s,\n    PortalUrl = abx_body_abx_body_abx_portal_url_s\n| project TimeGenerated, RecipientEmail, SenderEmail, SenderName, SenderIP, Subject, MessageId, AttackType, AttackScore, RemediationStatus, PortalUrl\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT5H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1566"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}