Mimecast Secure Email Gateway - Internal Email Protect

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Id	d3bd7640-3600-49f9-8d10-6fe312e68b4f
Rulename	Mimecast Secure Email Gateway - Internal Email Protect
Description	Detects threats from internal email threat protection.
Severity	High
Tactics	LateralMovement Persistence Exfiltration
Techniques	T1534 T1546
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/MimecastCG_Internal_Mail_Protect.yaml
Version	1.0.0
Arm template	d3bd7640-3600-49f9-8d10-6fe312e68b4f.json

KQL

MimecastCG
| where Type == "email_iep"
| extend  SenderEnvelope = ['Sender Envelope']  , MessageId = ['Message ID']

YAML

enabled: true
query: |
  MimecastCG
  | where Type == "email_iep"
  | extend  SenderEnvelope = ['Sender Envelope']  , MessageId = ['Message ID']  
version: 1.0.0
suppressionEnabled: false
triggerOperator: gt
relevantTechniques:
- T1534
- T1546
triggerThreshold: 0
suppressionDuration: 5h
requiredDataConnectors:
- connectorId: MimecastSEGAPI
  dataTypes:
  - MimecastCG
kind: Scheduled
tactics:
- LateralMovement
- Persistence
- Exfiltration
eventGroupingSettings:
  aggregationKind: AlertPerResult
entityMappings:
- entityType: MailMessage
  fieldMappings:
  - columnName: SenderEnvelope
    identifier: Sender
  - columnName: Recipients
    identifier: Recipient
  - columnName: MessageId
    identifier: InternetMessageId
description: |
    'Detects threats from internal email threat protection.'
queryFrequency: 15m
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: P7D
    matchingMethod: AllEntities
    enabled: true
    reopenClosedIncident: false
id: d3bd7640-3600-49f9-8d10-6fe312e68b4f
severity: High
status: Available
queryPeriod: 15m
name: Mimecast Secure Email Gateway - Internal Email Protect
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Mimecast/Analytic Rules/MimecastSEG/MimecastCG_Internal_Mail_Protect.yaml

ARM