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CYFIRMA - Brand Intelligence - Malicious Mobile App Medium Rule

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Idb73e6628-d44c-4ad3-a801-ea225c5744ee
RulenameCYFIRMA - Brand Intelligence - Malicious Mobile App Medium Rule
Description“This analytic rule detects instances where malicious or unauthorized mobile applications are discovered mimicking legitimate brand assets.

Such impersonations may be distributed through unofficial app stores or third-party websites, potentially deceiving customers, harvesting sensitive data, or damaging brand reputation.

This alert is triggered when CYFIRMA threat intelligence identifies a suspicious mobile app associated with the organization’s brand or product names.”
SeverityMedium
TacticsResourceDevelopment
Execution
DefenseEvasion
CredentialAccess
CommandAndControl
TechniquesT1406
T1414
T1437
T1583.001
T1204.002
Required data connectorsCyfirmaBrandIntelligenceAlertsDC
KindScheduled
Query frequency5m
Query period5m
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma%20Brand%20Intelligence/Analytic%20Rules/BIMaliciousMobileAppMediumRule.yaml
Version1.0.1
Arm templateb73e6628-d44c-4ad3-a801-ea225c5744ee.json
Deploy To Azure
// Medium severity - Malicious Mobile App Impersonation
let timeFrame = 5m;
CyfirmaBIMaliciousMobileAppsAlerts_CL
| where severity == 'High' and TimeGenerated between (ago(timeFrame) .. now())
| extend
    Description=description,
    FirstSeen=first_seen,
    LastSeen=last_seen,
    RiskScore=risk_score,
    AlertUID=alert_uid,
    UID=uid,
    AssetType=asset_type,
    AssetValue=asset_value,
    Impact=impact,
    Recommendation=recommendation,
    ProviderName='CYFIRMA',
    ProductName='DeCYFIR/DeTCT'
| project
    TimeGenerated,
    Description,
    RiskScore,
    FirstSeen,
    LastSeen,
    AlertUID,
    UID,
    AssetType,
    AssetValue,
    Impact,
    Recommendation,
    ProductName,
    ProviderName

relevantTechniques:
- T1406
- T1414
- T1437
- T1583.001
- T1204.002
triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma%20Brand%20Intelligence/Analytic%20Rules/BIMaliciousMobileAppMediumRule.yaml
triggerOperator: gt
id: b73e6628-d44c-4ad3-a801-ea225c5744ee
requiredDataConnectors:
- connectorId: CyfirmaBrandIntelligenceAlertsDC
  dataTypes:
  - CyfirmaBIMaliciousMobileAppsAlerts_CL
alertDetailsOverride:
  alertDynamicProperties:
  - value: ProductName
    alertProperty: ProductName
  - value: ProviderName
    alertProperty: ProviderName
  alertDisplayNameFormat: 'CYFIRMA - Medium Severity Alert: Malicious Mobile App Impersonating Brand Detected - {{AssetType}} - {{AssetValue}} '
  alertDescriptionFormat: '{{Description}} '
version: 1.0.1
severity: Medium
query: |
  // Medium severity - Malicious Mobile App Impersonation
  let timeFrame = 5m;
  CyfirmaBIMaliciousMobileAppsAlerts_CL
  | where severity == 'High' and TimeGenerated between (ago(timeFrame) .. now())
  | extend
      Description=description,
      FirstSeen=first_seen,
      LastSeen=last_seen,
      RiskScore=risk_score,
      AlertUID=alert_uid,
      UID=uid,
      AssetType=asset_type,
      AssetValue=asset_value,
      Impact=impact,
      Recommendation=recommendation,
      ProviderName='CYFIRMA',
      ProductName='DeCYFIR/DeTCT'
  | project
      TimeGenerated,
      Description,
      RiskScore,
      FirstSeen,
      LastSeen,
      AlertUID,
      UID,
      AssetType,
      AssetValue,
      Impact,
      Recommendation,
      ProductName,
      ProviderName
description: |
  "This analytic rule detects instances where malicious or unauthorized mobile applications are discovered mimicking legitimate brand assets. 
  Such impersonations may be distributed through unofficial app stores or third-party websites, potentially deceiving customers, harvesting sensitive data, or damaging brand reputation. 
  This alert is triggered when CYFIRMA threat intelligence identifies a suspicious mobile app associated with the organization's brand or product names."
eventGroupingSettings:
  aggregationKind: AlertPerResult
status: Available
customDetails:
  AlertUID: AlertUID
  Recommendation: Recommendation
  FirstSeen: FirstSeen
  AssetType: AssetType
  LastSeen: LastSeen
  Impact: Impact
  TimeGenerated: TimeGenerated
  AssetValue: AssetValue
  UID: UID
  RiskScore: RiskScore
  Description: Description
queryFrequency: 5m
kind: Scheduled
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    matchingMethod: AllEntities
    reopenClosedIncident: false
    lookbackDuration: PT5H
    enabled: false
tactics:
- ResourceDevelopment
- Execution
- DefenseEvasion
- CredentialAccess
- CommandAndControl
queryPeriod: 5m
name: CYFIRMA - Brand Intelligence - Malicious Mobile App Medium Rule

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/b73e6628-d44c-4ad3-a801-ea225c5744ee')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/b73e6628-d44c-4ad3-a801-ea225c5744ee')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "{{Description}} ",
          "alertDisplayNameFormat": "CYFIRMA - Medium Severity Alert: Malicious Mobile App Impersonating Brand Detected - {{AssetType}} - {{AssetValue}} ",
          "alertDynamicProperties": [
            {
              "alertProperty": "ProductName",
              "value": "ProductName"
            },
            {
              "alertProperty": "ProviderName",
              "value": "ProviderName"
            }
          ]
        },
        "alertRuleTemplateName": "b73e6628-d44c-4ad3-a801-ea225c5744ee",
        "customDetails": {
          "AlertUID": "AlertUID",
          "AssetType": "AssetType",
          "AssetValue": "AssetValue",
          "Description": "Description",
          "FirstSeen": "FirstSeen",
          "Impact": "Impact",
          "LastSeen": "LastSeen",
          "Recommendation": "Recommendation",
          "RiskScore": "RiskScore",
          "TimeGenerated": "TimeGenerated",
          "UID": "UID"
        },
        "description": "\"This analytic rule detects instances where malicious or unauthorized mobile applications are discovered mimicking legitimate brand assets. \nSuch impersonations may be distributed through unofficial app stores or third-party websites, potentially deceiving customers, harvesting sensitive data, or damaging brand reputation. \nThis alert is triggered when CYFIRMA threat intelligence identifies a suspicious mobile app associated with the organization's brand or product names.\"\n",
        "displayName": "CYFIRMA - Brand Intelligence - Malicious Mobile App Medium Rule",
        "enabled": true,
        "entityMappings": null,
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": false,
            "lookbackDuration": "PT5H",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma%20Brand%20Intelligence/Analytic%20Rules/BIMaliciousMobileAppMediumRule.yaml",
        "query": "// Medium severity - Malicious Mobile App Impersonation\nlet timeFrame = 5m;\nCyfirmaBIMaliciousMobileAppsAlerts_CL\n| where severity == 'High' and TimeGenerated between (ago(timeFrame) .. now())\n| extend\n    Description=description,\n    FirstSeen=first_seen,\n    LastSeen=last_seen,\n    RiskScore=risk_score,\n    AlertUID=alert_uid,\n    UID=uid,\n    AssetType=asset_type,\n    AssetValue=asset_value,\n    Impact=impact,\n    Recommendation=recommendation,\n    ProviderName='CYFIRMA',\n    ProductName='DeCYFIR/DeTCT'\n| project\n    TimeGenerated,\n    Description,\n    RiskScore,\n    FirstSeen,\n    LastSeen,\n    AlertUID,\n    UID,\n    AssetType,\n    AssetValue,\n    Impact,\n    Recommendation,\n    ProductName,\n    ProviderName\n",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [
          "T1583.001",
          "T1204.002"
        ],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl",
          "CredentialAccess",
          "DefenseEvasion",
          "Execution",
          "ResourceDevelopment"
        ],
        "techniques": [
          "T1204",
          "T1583"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}