Mimecast Targeted Threat Protection - Attachment Protect

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Id	617a55be-a8d8-49c1-8687-d19a0231056f
Rulename	Mimecast Targeted Threat Protection - Attachment Protect
Description	Detects a threat for an unsafe attachment in an email.
Severity	High
Tactics	InitialAccess Discovery
Techniques	T0865
Required data connectors	MimecastTTPAPI
Kind	Scheduled
Query frequency	30m
Query period	30m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Mimecast/Analytic Rules/MimecastTTP/Mimecast_TTP_Attachment.yaml
Version	1.0.0
Arm template	617a55be-a8d8-49c1-8687-d19a0231056f.json

KQL

MimecastTTPAttachment
| where Result != "safe"
| extend SenderAddress = ['Sender Address'] ,RecipientAddress = ['Recipient Address']

YAML

relevantTechniques:
- T0865
name: Mimecast Targeted Threat Protection - Attachment Protect
queryFrequency: 30m
version: 1.0.0
incidentConfiguration:
  groupingConfiguration:
    reopenClosedIncident: false
    enabled: true
    lookbackDuration: P7D
    matchingMethod: AllEntities
  createIncident: true
triggerThreshold: 0
severity: High
requiredDataConnectors:
- connectorId: MimecastTTPAPI
  dataTypes:
  - MimecastTTPAttachment
tactics:
- InitialAccess
- Discovery
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Mimecast/Analytic Rules/MimecastTTP/Mimecast_TTP_Attachment.yaml
query: |
  MimecastTTPAttachment
  | where Result != "safe"
  | extend SenderAddress = ['Sender Address'] ,RecipientAddress = ['Recipient Address']  
kind: Scheduled
entityMappings:
- fieldMappings:
  - columnName: SenderAddress
    identifier: Sender
  - columnName: RecipientAddress
    identifier: Recipient
  - columnName: Subject
    identifier: Subject
  entityType: MailMessage
queryPeriod: 30m
triggerOperator: gt
suppressionEnabled: false
eventGroupingSettings:
  aggregationKind: AlertPerResult
id: 617a55be-a8d8-49c1-8687-d19a0231056f
suppressionDuration: 5h
status: Available
description: |
    'Detects a threat for an unsafe attachment in an email.'

ARM