Mimecast Secure Email Gateway - AV

MimecastSIEM_CL| where mimecastEventId_s=="mail_av"

queryPeriod: 15m
suppressionEnabled: false
entityMappings:
- fieldMappings:
  - columnName: Sender_s
    identifier: Sender
  - columnName: Recipient_s
    identifier: Recipient
  - columnName: Subject_s
    identifier: Subject
  entityType: MailMessage
id: 0f0dc725-29dc-48c3-bf10-bd2f34fd1cbb
enabled: true
name: Mimecast Secure Email Gateway - AV
kind: Scheduled
description: Detects threats from email anti virus scan
tactics:
- Execution
version: 1.0.0
customDetails:
  md5: md5_g
  Size: Size_s
  IP: IP_s
  MimecastIP: MimecastIP_s
  fileName: fileName_s
  fileExt: fileExt_s
  CustomerIP: CustomerIP_s
  fileMime: fileMime_s
  SenderDomainInternal: SenderDomainInternal_s
  Virus: Virus_s
  sha1: sha1_s
  SenderDomain: SenderDomain_s
  Route: Route_s
  sha256: sha256_s
  MsgId: MsgId_s
triggerOperator: gt
query: MimecastSIEM_CL| where mimecastEventId_s=="mail_av"
queryFrequency: 5m
incidentConfiguration:
  groupingConfiguration:
    matchingMethod: AllEntities
    enabled: true
    reopenClosedIncident: false
    lookbackDuration: 1d
  createIncident: true
triggerThreshold: 0
eventGroupingSettings:
  aggregationKind: SingleAlert
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/MimecastSEG/Analytic Rules/MimecastSIEM_AV.yaml
requiredDataConnectors:
- dataTypes:
  - MimecastSIEM_CL
  connectorId: MimecastSIEMAPI
suppressionDuration: 5h
relevantTechniques:
- T1053
severity: Informational

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2023-02-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/0f0dc725-29dc-48c3-bf10-bd2f34fd1cbb')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/0f0dc725-29dc-48c3-bf10-bd2f34fd1cbb')]",
      "properties": {
        "alertRuleTemplateName": "0f0dc725-29dc-48c3-bf10-bd2f34fd1cbb",
        "customDetails": {
          "CustomerIP": "CustomerIP_s",
          "fileExt": "fileExt_s",
          "fileMime": "fileMime_s",
          "fileName": "fileName_s",
          "IP": "IP_s",
          "md5": "md5_g",
          "MimecastIP": "MimecastIP_s",
          "MsgId": "MsgId_s",
          "Route": "Route_s",
          "SenderDomain": "SenderDomain_s",
          "SenderDomainInternal": "SenderDomainInternal_s",
          "sha1": "sha1_s",
          "sha256": "sha256_s",
          "Size": "Size_s",
          "Virus": "Virus_s"
        },
        "description": "Detects threats from email anti virus scan",
        "displayName": "Mimecast Secure Email Gateway - AV",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "MailMessage",
            "fieldMappings": [
              {
                "columnName": "Sender_s",
                "identifier": "Sender"
              },
              {
                "columnName": "Recipient_s",
                "identifier": "Recipient"
              },
              {
                "columnName": "Subject_s",
                "identifier": "Subject"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "SingleAlert"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": true,
            "lookbackDuration": "P1D",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/MimecastSEG/Analytic Rules/MimecastSIEM_AV.yaml",
        "query": "MimecastSIEM_CL| where mimecastEventId_s==\"mail_av\"",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT15M",
        "severity": "Informational",
        "suppressionDuration": "PT5H",
        "suppressionEnabled": false,
        "tactics": [
          "Execution"
        ],
        "techniques": [
          "T1053"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}