Mimecast Secure Email Gateway - URL Protect

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Id	80f244cd-b0d6-404e-9aed-37f7a66eda9f
Rulename	Mimecast Secure Email Gateway - URL Protect
Description	Detect threat when potentially malicious url found.
Severity	High
Tactics	InitialAccess Discovery Execution
Techniques	T1566
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_Url_Protect.yaml
Version	1.0.0
Arm template	80f244cd-b0d6-404e-9aed-37f7a66eda9f.json

KQL

MimecastCG
| where Type == "email_ttp_url"
| extend  SenderEnvelope = ['Sender Envelope']

YAML

name: Mimecast Secure Email Gateway - URL Protect
entityMappings:
- fieldMappings:
  - columnName: SenderEnvelope
    identifier: Sender
  - columnName: Recipients
    identifier: Recipient
  - columnName: Subject
    identifier: Subject
  entityType: MailMessage
id: 80f244cd-b0d6-404e-9aed-37f7a66eda9f
description: |
    'Detect threat when potentially malicious url found.'
enabled: true
suppressionEnabled: false
version: 1.0.0
triggerOperator: gt
query: |
  MimecastCG
  | where Type == "email_ttp_url"
  | extend  SenderEnvelope = ['Sender Envelope']  
tactics:
- InitialAccess
- Discovery
- Execution
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:
  - MimecastCG
  connectorId: MimecastSEGAPI
status: Available
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Mimecast/Analytic Rules/MimecastSEG/MimecastCG_Url_Protect.yaml
eventGroupingSettings:
  aggregationKind: AlertPerResult
relevantTechniques:
- T1566

ARM