Vaikora - High score quarantine

id: 017031f6-be1d-4c68-b4d3-182fa84378cc
name: Vaikora - High score quarantine
description: |
  Identifies high-confidence phishing or suspected-threat quarantine events from Vaikora for O365. Fires when the classifier returns action_id 4 (Suspected) or 5 (Phishing) with confidence above 0.8 on a Microsoft 365 mailbox.
severity: High
requiredDataConnectors:
  - connectorId: VaikoraO365
    dataTypes:
      - VaikoraO365_Quarantine_CL
queryFrequency: 15m
queryPeriod: 15m
triggerOperator: gt
triggerThreshold: 0
status: Available
tactics:
  - InitialAccess
  - CredentialAccess
  - Collection
  - Exfiltration
relevantTechniques:
  - T1566
  - T1566.001
  - T1566.002
query: |
  VaikoraO365_Quarantine_CL
  | where TimeGenerated >= ago(15m)
  | where ActionId_d in (4, 5)
  | where Confidence_d >= 0.8
  | extend
      EmailId          = EmailId_s,
      TenantId         = TenantId_s,
      ActionId         = ActionId_d,
      ActionName       = ActionName_s,
      Confidence       = Confidence_d,
      RiskScore        = RiskScore_d,
      SubCategory      = SubCategory_s,
      Reasoning        = Reasoning_s,
      SourceMailbox    = SourceMailbox_s,
      SenderAddress    = SenderAddress_s,
      SenderDomain     = SenderDomain_s,
      Subject          = Subject_s,
      RecipientAddress = RecipientAddress_s,
      ModelVersion     = ModelVersion_s
  | project
      TimeGenerated, EmailId, TenantId, ActionId, ActionName, Confidence, RiskScore,
      SubCategory, Reasoning, SourceMailbox, SenderAddress, SenderDomain, Subject,
      RecipientAddress, ModelVersion
  | order by TimeGenerated desc
entityMappings:
  - entityType: MailMessage
    fieldMappings:
      - identifier: Recipient
        columnName: RecipientAddress
      - identifier: NetworkMessageId
        columnName: EmailId
  - entityType: Account
    fieldMappings:
      - identifier: FullName
        columnName: SenderAddress
  - entityType: Account
    fieldMappings:
      - identifier: FullName
        columnName: RecipientAddress
  - entityType: DNS
    fieldMappings:
      - identifier: DomainName
        columnName: SenderDomain
alertDetailsOverride:
  alertDisplayNameFormat: "Vaikora-O365 {{ActionName}} on {{RecipientAddress}}"
  alertDescriptionFormat: "Vaikora-O365 classified this message as {{ActionName}} with confidence {{Confidence}}. The message was quarantined from the recipient mailbox."
version: 1.0.0
kind: Scheduled