MimecastDLP
| where Action == "hold"
| extend SenderAddress = ['Sender Address'] ,RecipientAddress = ['Recipient Address']
queryFrequency: 15m
description: Detects threat for data leak when action is hold
eventGroupingSettings:
aggregationKind: SingleAlert
name: Mimecast Data Leak Prevention - Hold
relevantTechniques:
- T1030
query: |
MimecastDLP
| where Action == "hold"
| extend SenderAddress = ['Sender Address'] ,RecipientAddress = ['Recipient Address']
incidentConfiguration:
createIncident: true
groupingConfiguration:
lookbackDuration: P7D
reopenClosedIncident: false
matchingMethod: AllEntities
enabled: true
id: 8e52bcf1-4f50-4c39-8678-d9efad64e379
queryPeriod: 15m
entityMappings:
- entityType: MailMessage
fieldMappings:
- identifier: Sender
columnName: SenderAddress
- identifier: Recipient
columnName: RecipientAddress
- identifier: DeliveryAction
columnName: Action
suppressionDuration: 5h
kind: Scheduled
triggerThreshold: 0
severity: Informational
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Mimecast/Analytic Rules/MimecastSEG/MimecastDLP_hold.yaml
version: 1.0.0
enabled: true
requiredDataConnectors:
- dataTypes:
- MimecastDLP
connectorId: MimecastSEGAPI
triggerOperator: gt
tactics:
- Exfiltration
suppressionEnabled: false
{
"$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/8e52bcf1-4f50-4c39-8678-d9efad64e379')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/8e52bcf1-4f50-4c39-8678-d9efad64e379')]",
"properties": {
"alertRuleTemplateName": "8e52bcf1-4f50-4c39-8678-d9efad64e379",
"customDetails": null,
"description": "Detects threat for data leak when action is hold",
"displayName": "Mimecast Data Leak Prevention - Hold",
"enabled": true,
"entityMappings": [
{
"entityType": "MailMessage",
"fieldMappings": [
{
"columnName": "SenderAddress",
"identifier": "Sender"
},
{
"columnName": "RecipientAddress",
"identifier": "Recipient"
},
{
"columnName": "Action",
"identifier": "DeliveryAction"
}
]
}
],
"eventGroupingSettings": {
"aggregationKind": "SingleAlert"
},
"incidentConfiguration": {
"createIncident": true,
"groupingConfiguration": {
"enabled": true,
"lookbackDuration": "P7D",
"matchingMethod": "AllEntities",
"reopenClosedIncident": false
}
},
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Mimecast/Analytic Rules/MimecastSEG/MimecastDLP_hold.yaml",
"query": "MimecastDLP \n| where Action == \"hold\"\n| extend SenderAddress = ['Sender Address'] ,RecipientAddress = ['Recipient Address']\n",
"queryFrequency": "PT15M",
"queryPeriod": "PT15M",
"severity": "Informational",
"subTechniques": [],
"suppressionDuration": "PT5H",
"suppressionEnabled": false,
"tactics": [
"Exfiltration"
],
"techniques": [
"T1030"
],
"templateVersion": "1.0.0",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}