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

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

ARM