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

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

ARM