Mimecast Secure Email Gateway - Spam Event Thread

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Id	0cda82c8-e8f0-4117-896e-a10f1b43e64a
Rulename	Mimecast Secure Email Gateway - Spam Event Thread
Description	Detects threat from spam event thread protection logs.
Severity	Low
Tactics	Discovery
Techniques	T1083
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_Spam_Event.yaml
Version	1.0.0
Arm template	0cda82c8-e8f0-4117-896e-a10f1b43e64a.json

KQL

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

YAML

incidentConfiguration:
  groupingConfiguration:
    enabled: true
    reopenClosedIncident: false
    matchingMethod: AllEntities
    lookbackDuration: P7D
  createIncident: true
queryFrequency: 15m
tactics:
- Discovery
relevantTechniques:
- T1083
triggerOperator: gt
name: Mimecast Secure Email Gateway - Spam Event Thread
description: |
    'Detects threat from spam event thread protection logs.'
suppressionDuration: 5h
entityMappings:
- entityType: MailMessage
  fieldMappings:
  - columnName: SenderEnvelope
    identifier: Sender
  - columnName: Recipients
    identifier: Recipient
  - columnName: Subject
    identifier: Subject
version: 1.0.0
eventGroupingSettings:
  aggregationKind: AlertPerResult
status: Available
id: 0cda82c8-e8f0-4117-896e-a10f1b43e64a
suppressionEnabled: false
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Mimecast/Analytic Rules/MimecastSEG/MimecastCG_Spam_Event.yaml
kind: Scheduled
triggerThreshold: 0
queryPeriod: 15m
requiredDataConnectors:
- connectorId: MimecastSEGAPI
  dataTypes:
  - MimecastCG
severity: Low
enabled: true
query: |
  MimecastCG
  | where Type == "email_spam"
  | extend  SenderEnvelope = ['Sender Envelope']

ARM