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

id: 80f244cd-b0d6-404e-9aed-37f7a66eda9f
name: Mimecast Secure Email Gateway - URL Protect
entityMappings:
- entityType: MailMessage
  fieldMappings:
  - columnName: SenderEnvelope
    identifier: Sender
  - columnName: Recipients
    identifier: Recipient
  - columnName: Subject
    identifier: Subject
version: 1.0.0
relevantTechniques:
- T1566
queryFrequency: 15m
suppressionEnabled: false
status: Available
eventGroupingSettings:
  aggregationKind: AlertPerResult
incidentConfiguration:
  groupingConfiguration:
    matchingMethod: AllEntities
    enabled: true
    lookbackDuration: P7D
    reopenClosedIncident: false
  createIncident: true
triggerThreshold: 0
kind: Scheduled
tactics:
- InitialAccess
- Discovery
- Execution
triggerOperator: gt
queryPeriod: 15m
severity: High
suppressionDuration: 5h
enabled: true
description: |
    'Detect threat when potentially malicious url found.'
query: |
  MimecastCG
  | where Type == "email_ttp_url"
  | extend  SenderEnvelope = ['Sender Envelope']  
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Mimecast/Analytic Rules/MimecastSEG/MimecastCG_Url_Protect.yaml
requiredDataConnectors:
- connectorId: MimecastSEGAPI
  dataTypes:
  - MimecastCG

ARM