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

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

ARM