CYFIRMA - Brand Intelligence - Malicious Mobile App Medium Rule

Back


Id	b73e6628-d44c-4ad3-a801-ea225c5744ee
Rulename	CYFIRMA - 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.”
Severity	Medium
Tactics	ResourceDevelopment Execution DefenseEvasion CredentialAccess CommandAndControl
Techniques	T1406 T1414 T1437 T1583.001 T1204.002
Required data connectors	CyfirmaBrandIntelligenceAlertsDC
Kind	Scheduled
Query frequency	5m
Query period	5m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma%20Brand%20Intelligence/Analytic%20Rules/BIMaliciousMobileAppMediumRule.yaml
Version	1.0.1
Arm template	b73e6628-d44c-4ad3-a801-ea225c5744ee.json

KQL

// 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

YAML

kind: Scheduled
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma%20Brand%20Intelligence/Analytic%20Rules/BIMaliciousMobileAppMediumRule.yaml
version: 1.0.1
status: Available
requiredDataConnectors:
- dataTypes:
  - CyfirmaBIMaliciousMobileAppsAlerts_CL
  connectorId: CyfirmaBrandIntelligenceAlertsDC
alertDetailsOverride:
  alertDescriptionFormat: '{{Description}} '
  alertDynamicProperties:
  - alertProperty: ProductName
    value: ProductName
  - alertProperty: ProviderName
    value: ProviderName
  alertDisplayNameFormat: 'CYFIRMA - Medium Severity Alert: Malicious Mobile App Impersonating Brand Detected - {{AssetType}} - {{AssetValue}} '
relevantTechniques:
- T1406
- T1414
- T1437
- T1583.001
- T1204.002
incidentConfiguration:
  groupingConfiguration:
    reopenClosedIncident: false
    matchingMethod: AllEntities
    enabled: false
    lookbackDuration: PT5H
  createIncident: true
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
tactics:
- ResourceDevelopment
- Execution
- DefenseEvasion
- CredentialAccess
- CommandAndControl
queryFrequency: 5m
id: b73e6628-d44c-4ad3-a801-ea225c5744ee
triggerThreshold: 0
triggerOperator: gt
name: CYFIRMA - Brand Intelligence - Malicious Mobile App Medium Rule
queryPeriod: 5m
severity: Medium
customDetails:
  RiskScore: RiskScore
  Impact: Impact
  FirstSeen: FirstSeen
  AssetType: AssetType
  AlertUID: AlertUID
  TimeGenerated: TimeGenerated
  Recommendation: Recommendation
  LastSeen: LastSeen
  UID: UID
  AssetValue: AssetValue
  Description: Description
eventGroupingSettings:
  aggregationKind: AlertPerResult
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."

ARM

{
  "$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"
    }
  ]
}