Mimecast Data Leak Prevention - Notifications

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Id	cfd67598-ad0d-430a-a793-027eb4dbe967
Rulename	Mimecast Data Leak Prevention - Notifications
Description	Detects threat for data leak when action is notification
Severity	High
Tactics	Exfiltration
Techniques	T1030
Required data connectors	MimecastSEGAPI
Kind	Scheduled
Query frequency	15m
Query period	15m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Mimecast/Analytic Rules/MimecastSEG/MimecastDLP_Notifications.yaml
Version	1.0.0
Arm template	cfd67598-ad0d-430a-a793-027eb4dbe967.json

KQL

MimecastDLP 
| where Action == "notification"
| extend SenderAddress = ['Sender Address'] ,RecipientAddress = ['Recipient Address']

YAML

name: Mimecast Data Leak Prevention - Notifications
entityMappings:
- fieldMappings:
  - columnName: SenderAddress
    identifier: Sender
  - columnName: RecipientAddress
    identifier: Recipient
  - columnName: Action
    identifier: DeliveryAction
  entityType: MailMessage
id: cfd67598-ad0d-430a-a793-027eb4dbe967
enabled: true
suppressionEnabled: false
version: 1.0.0
alertRuleTemplateName: 
triggerOperator: gt
query: |
  MimecastDLP 
  | where Action == "notification"
  | extend SenderAddress = ['Sender Address'] ,RecipientAddress = ['Recipient Address']  
description: Detects threat for data leak when action is notification
suppressionDuration: 5h
kind: Scheduled
queryFrequency: 15m
triggerThreshold: 0
severity: High
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: P7D
    reopenClosedIncident: false
    matchingMethod: AllEntities
    enabled: true
queryPeriod: 15m
requiredDataConnectors:
- dataTypes:
  - MimecastDLP
  connectorId: MimecastSEGAPI
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Mimecast/Analytic Rules/MimecastSEG/MimecastDLP_Notifications.yaml
eventGroupingSettings:
  aggregationKind: SingleAlert
relevantTechniques:
- T1030
tactics:
- Exfiltration

ARM