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

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

ARM