Mimecast Targeted Threat Protection - Attachment Protect

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Id	aa75944c-a663-4901-969e-7b55bfa49a73
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	5m
Query period	15m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/MimecastTTP/Analytic Rules/MimecastTTPAttachment.yaml
Version	1.0.0
Arm template	aa75944c-a663-4901-969e-7b55bfa49a73.json

KQL

MimecastTTPAttachment_CL| where result_s <> "safe";

YAML

queryFrequency: 5m
eventGroupingSettings:
  aggregationKind: AlertPerResult
id: aa75944c-a663-4901-969e-7b55bfa49a73
triggerOperator: gt
incidentConfiguration:
  groupingConfiguration:
    matchingMethod: AllEntities
    lookbackDuration: 1d
    reopenClosedIncident: false
    enabled: true
  createIncident: true
query: MimecastTTPAttachment_CL| where result_s <> "safe";
entityMappings:
- fieldMappings:
  - identifier: Sender
    columnName: senderAddress_s
  - identifier: Recipient
    columnName: recipientAddress_s
  - identifier: Subject
    columnName: subject_s
  entityType: MailMessage
queryPeriod: 15m
kind: Scheduled
suppressionEnabled: false
customDetails:
  fileType: fileType_s
  details: details_s
  fileName: fileName_s
  fileHash: fileHash_s
name: Mimecast Targeted Threat Protection - Attachment Protect
suppressionDuration: 5h
triggerThreshold: 0
relevantTechniques:
- T0865
enabled: true
requiredDataConnectors:
- connectorId: MimecastTTPAPI
  dataTypes:
  - MimecastTTPAttachment_CL
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/MimecastTTP/Analytic Rules/MimecastTTPAttachment.yaml
version: 1.0.0
severity: High
alertRuleTemplateName: 
description: Detects a threat for an unsafe attachment in an email
tactics:
- InitialAccess
- Discovery

ARM