Mimecast Secure Email Gateway - Spam Event Thread

Back


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

ARM