Mimecast Secure Email Gateway - AV

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Id	33bf0cc9-e568-42bf-9571-c22adf7be66d
Rulename	Mimecast Secure Email Gateway - AV
Description	Detects threats from email anti virus scan.
Severity	Informational
Tactics	Execution
Techniques	T1053
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_AV.yaml
Version	1.0.0
Arm template	33bf0cc9-e568-42bf-9571-c22adf7be66d.json

KQL

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

YAML

entityMappings:
- fieldMappings:
  - identifier: Sender
    columnName: SenderEnvelope
  - identifier: Recipient
    columnName: Recipients
  - identifier: Subject
    columnName: Subject
  entityType: MailMessage
kind: Scheduled
description: |
    'Detects threats from email anti virus scan.'
queryPeriod: 15m
eventGroupingSettings:
  aggregationKind: AlertPerResult
tactics:
- Execution
triggerOperator: gt
version: 1.0.0
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: P7D
    enabled: true
    reopenClosedIncident: false
    matchingMethod: AllEntities
requiredDataConnectors:
- connectorId: MimecastSEGAPI
  dataTypes:
  - MimecastCG
suppressionEnabled: false
id: 33bf0cc9-e568-42bf-9571-c22adf7be66d
name: Mimecast Secure Email Gateway - AV
status: Available
enabled: true
query: |
  MimecastCG
  | where Type == "email_antivirus"
  | extend  SenderEnvelope = ['Sender Envelope']   
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Mimecast/Analytic Rules/MimecastSEG/MimecastCG_AV.yaml
severity: Informational
relevantTechniques:
- T1053
suppressionDuration: 5h
triggerThreshold: 0
queryFrequency: 15m

ARM