Mimecast Targeted Threat Protection - Impersonation Protect

MimecastTTPImpersonation_CL| where taggedMalicious_b == true;

suppressionEnabled: false
relevantTechniques:
- T1114
alertRuleTemplateName: 
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/MimecastTTP/Analytic Rules/MimecastTTPImpersonation.yaml
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    matchingMethod: AllEntities
    lookbackDuration: 1d
    enabled: true
    reopenClosedIncident: false
requiredDataConnectors:
- dataTypes:
  - MimecastTTPImpersonation_CL
  connectorId: MimecastTTPAPI
id: d8e7eca6-4b59-4069-a31e-a022b2a12ea4
suppressionDuration: 5h
name: Mimecast Targeted Threat Protection - Impersonation Protect
queryFrequency: 5m
eventGroupingSettings:
  aggregationKind: AlertPerResult
triggerOperator: gt
tactics:
- Exfiltration
- Collection
- Discovery
description: Detects a maliciously tagged impersonation
triggerThreshold: 0
kind: Scheduled
severity: High
query: MimecastTTPImpersonation_CL| where taggedMalicious_b == true;
entityMappings:
- entityType: MailMessage
  fieldMappings:
  - columnName: senderAddress_s
    identifier: Sender
  - columnName: senderIpAddress_s
    identifier: SenderIP
  - columnName: recipientAddress_s
    identifier: Recipient
enabled: true
version: 1.0.0
queryPeriod: 15m

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/d8e7eca6-4b59-4069-a31e-a022b2a12ea4')]",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/d8e7eca6-4b59-4069-a31e-a022b2a12ea4')]",
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
      "kind": "Scheduled",
      "apiVersion": "2022-11-01-preview",
      "properties": {
        "displayName": "Mimecast Targeted Threat Protection - Impersonation Protect",
        "description": "Detects a maliciously tagged impersonation",
        "severity": "High",
        "enabled": true,
        "query": "MimecastTTPImpersonation_CL| where taggedMalicious_b == true;",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT15M",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0,
        "suppressionDuration": "PT5H",
        "suppressionEnabled": false,
        "tactics": [
          "Exfiltration",
          "Collection",
          "Discovery"
        ],
        "techniques": [
          "T1114"
        ],
        "alertRuleTemplateName": null,
        "incidentConfiguration": {
          "groupingConfiguration": {
            "enabled": true,
            "lookbackDuration": "P1D",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          },
          "createIncident": true
        },
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "customDetails": null,
        "entityMappings": [
          {
            "fieldMappings": [
              {
                "identifier": "Sender",
                "columnName": "senderAddress_s"
              },
              {
                "identifier": "SenderIP",
                "columnName": "senderIpAddress_s"
              },
              {
                "identifier": "Recipient",
                "columnName": "recipientAddress_s"
              }
            ],
            "entityType": "MailMessage"
          }
        ],
        "templateVersion": "1.0.0",
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/MimecastTTP/Analytic Rules/MimecastTTPImpersonation.yaml"
      }
    }
  ]
}