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

ARM