Lookout - Critical Smishing and Phishing Alerts v2

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Id	7a3e5f9b-4c8d-4a2e-9f1b-6d8e2a4c7f9e
Rulename	Lookout - Critical Smishing and Phishing Alerts (v2)
Description	Detects critical smishing (SMS phishing) and phishing alerts from Lookout Mobile Risk API v2. This rule identifies sophisticated social engineering attacks including CEO fraud, credential harvesting, and malicious link campaigns targeting mobile devices. Leverages enhanced v2 smishing detection capabilities for comprehensive mobile threat protection.
Severity	High
Tactics	InitialAccess CredentialAccess Collection Discovery
Techniques	T1660 T1417 T1423
Required data connectors	LookoutAPI
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/Lookout/Analytic Rules/LookoutSmishingAlertV2.yaml
Version	2.0.3
Arm template	7a3e5f9b-4c8d-4a2e-9f1b-6d8e2a4c7f9e.json

KQL

LookoutEvents
| where EventType == "SMISHING_ALERT"
| where SmishingAlertSeverity in ("CRITICAL", "HIGH")
| where SmishingAlertType in ("PHISHING_DETECTION", "FRAUD_DETECTION", "CREDENTIAL_HARVESTING")
| extend 
    AlertRiskScore = case(
        SmishingAlertSeverity == "CRITICAL", 10,
        SmishingAlertSeverity == "HIGH", 8,
        SmishingAlertSeverity == "MEDIUM", 5,
        SmishingAlertSeverity == "LOW", 2,
        1
    ),
    ThreatCategory = case(
        SmishingAlertType == "PHISHING_DETECTION", "Phishing",
        SmishingAlertType == "FRAUD_DETECTION", "Fraud",
        SmishingAlertType == "CREDENTIAL_HARVESTING", "Credential Theft",
        SmishingAlertType == "MALICIOUS_LINK", "Malicious Link",
        "Other"
    ),
    ImpersonationRisk = case(
        SmishingAlertDescription has "CEO" or SmishingAlertDescription has "executive", "Executive Impersonation",
        SmishingAlertDescription has "IT" or SmishingAlertDescription has "support", "IT Support Impersonation", 
        SmishingAlertDescription has "bank" or SmishingAlertDescription has "financial", "Financial Impersonation",
        SmishingAlertDescription has "delivery" or SmishingAlertDescription has "package", "Delivery Impersonation",
        "Generic Phishing"
    )
| extend DeviceRiskLevel = case(
    DeviceSecurityStatus == "THREATS_HIGH", "High",
    DeviceSecurityStatus == "THREATS_MEDIUM", "Medium", 
    DeviceSecurityStatus == "THREATS_LOW", "Low",
    "Unknown"
)
| extend CampaignIndicators = case(
    AlertRiskScore >= 8 and DeviceRiskLevel == "High", "Targeted Campaign",
    AlertRiskScore >= 6 and ImpersonationRisk != "Generic Phishing", "Sophisticated Attack",
    AlertRiskScore >= 5, "Coordinated Threat",
    "Isolated Incident"
)
| project
    TimeGenerated,
    EventId,
    SmishingAlertId,
    SmishingAlertType,
    SmishingAlertSeverity,
    SmishingAlertDescription,
    AlertRiskScore,
    ThreatCategory,
    ImpersonationRisk,
    CampaignIndicators,
    DeviceGuid,
    DevicePlatform,
    DeviceOSVersion,
    DeviceManufacturer,
    DeviceModel,
    DeviceEmailAddress,
    DeviceSecurityStatus,
    DeviceRiskLevel,
    TargetEmailAddress,
    TargetPlatform,
    ActorType,
    ActorGuid,
    ChangeType

YAML

version: 2.0.3
queryFrequency: 5m
kind: Scheduled
suppressionDuration: PT1H
eventGroupingSettings:
  aggregationKind: AlertPerResult
relevantTechniques:
- T1660
- T1417
- T1423
alertDetailsOverride:
  alertDisplayNameFormat: 'Critical Smishing Alert: {{ThreatCategory}} targeting {{DevicePlatform}} Device'
  alertDescriptionFormat: '{{SmishingAlertSeverity}} {{ThreatCategory}} attack on {{DevicePlatform}}'
  alertSeverityColumnName: SmishingAlertSeverity
  alertTacticsColumnName: ThreatCategory
triggerOperator: gt
customDetails:
  DeviceSecStatus: DeviceSecurityStatus
  ThreatCategory: ThreatCategory
  CampaignIndicators: CampaignIndicators
  ImpersonationRisk: ImpersonationRisk
  DevicePlatform: DevicePlatform
  AlertRiskScore: AlertRiskScore
  SmishSeverity: SmishingAlertSeverity
  SmishAlertType: SmishingAlertType
  DeviceRiskLevel: DeviceRiskLevel
status: Available
requiredDataConnectors:
- connectorId: LookoutAPI
  dataTypes:
  - LookoutEvents
id: 7a3e5f9b-4c8d-4a2e-9f1b-6d8e2a4c7f9e
name: Lookout - Critical Smishing and Phishing Alerts (v2)
query: |
  LookoutEvents
  | where EventType == "SMISHING_ALERT"
  | where SmishingAlertSeverity in ("CRITICAL", "HIGH")
  | where SmishingAlertType in ("PHISHING_DETECTION", "FRAUD_DETECTION", "CREDENTIAL_HARVESTING")
  | extend 
      AlertRiskScore = case(
          SmishingAlertSeverity == "CRITICAL", 10,
          SmishingAlertSeverity == "HIGH", 8,
          SmishingAlertSeverity == "MEDIUM", 5,
          SmishingAlertSeverity == "LOW", 2,
          1
      ),
      ThreatCategory = case(
          SmishingAlertType == "PHISHING_DETECTION", "Phishing",
          SmishingAlertType == "FRAUD_DETECTION", "Fraud",
          SmishingAlertType == "CREDENTIAL_HARVESTING", "Credential Theft",
          SmishingAlertType == "MALICIOUS_LINK", "Malicious Link",
          "Other"
      ),
      ImpersonationRisk = case(
          SmishingAlertDescription has "CEO" or SmishingAlertDescription has "executive", "Executive Impersonation",
          SmishingAlertDescription has "IT" or SmishingAlertDescription has "support", "IT Support Impersonation", 
          SmishingAlertDescription has "bank" or SmishingAlertDescription has "financial", "Financial Impersonation",
          SmishingAlertDescription has "delivery" or SmishingAlertDescription has "package", "Delivery Impersonation",
          "Generic Phishing"
      )
  | extend DeviceRiskLevel = case(
      DeviceSecurityStatus == "THREATS_HIGH", "High",
      DeviceSecurityStatus == "THREATS_MEDIUM", "Medium", 
      DeviceSecurityStatus == "THREATS_LOW", "Low",
      "Unknown"
  )
  | extend CampaignIndicators = case(
      AlertRiskScore >= 8 and DeviceRiskLevel == "High", "Targeted Campaign",
      AlertRiskScore >= 6 and ImpersonationRisk != "Generic Phishing", "Sophisticated Attack",
      AlertRiskScore >= 5, "Coordinated Threat",
      "Isolated Incident"
  )
  | project
      TimeGenerated,
      EventId,
      SmishingAlertId,
      SmishingAlertType,
      SmishingAlertSeverity,
      SmishingAlertDescription,
      AlertRiskScore,
      ThreatCategory,
      ImpersonationRisk,
      CampaignIndicators,
      DeviceGuid,
      DevicePlatform,
      DeviceOSVersion,
      DeviceManufacturer,
      DeviceModel,
      DeviceEmailAddress,
      DeviceSecurityStatus,
      DeviceRiskLevel,
      TargetEmailAddress,
      TargetPlatform,
      ActorType,
      ActorGuid,
      ChangeType  
queryPeriod: 15m
suppressionEnabled: false
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Lookout/Analytic Rules/LookoutSmishingAlertV2.yaml
triggerThreshold: 0
description: |
    'Detects critical smishing (SMS phishing) and phishing alerts from Lookout Mobile Risk API v2. This rule identifies sophisticated social engineering attacks including CEO fraud, credential harvesting, and malicious link campaigns targeting mobile devices. Leverages enhanced v2 smishing detection capabilities for comprehensive mobile threat protection.'
entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: FullName
    columnName: DeviceEmailAddress
  - identifier: Name
    columnName: TargetEmailAddress
- entityType: Host
  fieldMappings:
  - identifier: HostName
    columnName: DeviceGuid
  - identifier: OSFamily
    columnName: DevicePlatform
  - identifier: OSVersion
    columnName: DeviceOSVersion
- entityType: URL
  fieldMappings:
  - identifier: Url
    columnName: SmishingAlertDescription
severity: High
tactics:
- InitialAccess
- CredentialAccess
- Collection
- Discovery
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: P1D
    matchingMethod: Selected
    groupByEntities:
    - Account
    - Host
    groupByCustomDetails:
    - ThreatCategory
    - ImpersonationRisk
    - CampaignIndicators
    groupByAlertDetails:
    - SmishAlertType
    - DeviceGuid
    reopenClosedIncident: false
    enabled: true

ARM