CYFIRMA - Social and Public Exposure - Source Code Exposure on Public Repositories Rule

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Id	28e315a3-725d-4261-a6c2-e597d51541f4
Rulename	CYFIRMA - Social and Public Exposure - Source Code Exposure on Public Repositories Rule
Description	“This rule triggers when CYFIRMA detects source code related to internal or enterprise domains exposed on public platforms like GitHub. Such exposure may lead to intellectual property leakage or help adversaries understand internal systems, increasing the risk of targeted attacks.”
Severity	Medium
Tactics	ResourceDevelopment CredentialAccess Discovery
Techniques	T1587.001 T1606.001 T1082
Required data connectors	CyfirmaDigitalRiskAlertsConnector
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%20Digital%20Risk/Analytic%20Rules/SPESourceCodeExposureMediumRule.yaml
Version	1.0.1
Arm template	28e315a3-725d-4261-a6c2-e597d51541f4.json

KQL

// Medium severity - Social and Public Exposure - Source Code Exposure on Public Repositories
let timeFrame = 5m;
CyfirmaSPESourceCodeAlerts_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=signature,
    Source=source,
    Impact=impact,
    Recommendation=recommendation,
    ProviderName='CYFIRMA',
    ProductName='DeCYFIR/DeTCT',
    AlertTitle=Alert_title
| project
    TimeGenerated,
    Description,
    RiskScore,
    FirstSeen,
    LastSeen,
    AlertUID,
    UID,
    AssetType,
    AssetValue,
    Impact,
    ProductName,
    ProviderName,
    AlertTitle

YAML

incidentConfiguration:
  groupingConfiguration:
    matchingMethod: AllEntities
    enabled: false
    lookbackDuration: PT5H
    reopenClosedIncident: false
  createIncident: true
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma%20Digital%20Risk/Analytic%20Rules/SPESourceCodeExposureMediumRule.yaml
triggerThreshold: 0
id: 28e315a3-725d-4261-a6c2-e597d51541f4
kind: Scheduled
queryPeriod: 5m
eventGroupingSettings:
  aggregationKind: AlertPerResult
tactics:
- ResourceDevelopment
- CredentialAccess
- Discovery
queryFrequency: 5m
alertDetailsOverride:
  alertDescriptionFormat: '{{Description}} '
  alertDisplayNameFormat: 'CYFIRMA Medium Severity Alert - Source Code Exposure on Public Repositories - {{AlertTitle}} '
  alertDynamicProperties:
  - alertProperty: ProductName
    value: ProductName
  - alertProperty: ProviderName
    value: ProviderName
severity: Medium
name: CYFIRMA - Social and Public Exposure - Source Code Exposure on Public Repositories Rule
customDetails:
  Description: Description
  LastSeen: LastSeen
  TimeGenerated: TimeGenerated
  AssetType: AssetType
  AssetValue: AssetValue
  RiskScore: RiskScore
  UID: UID
  Impact: Impact
  AlertUID: AlertUID
  FirstSeen: FirstSeen
requiredDataConnectors:
- connectorId: CyfirmaDigitalRiskAlertsConnector
  dataTypes:
  - CyfirmaSPESourceCodeAlerts_CL
version: 1.0.1
relevantTechniques:
- T1587.001
- T1606.001
- T1082
status: Available
query: |
  // Medium severity - Social and Public Exposure - Source Code Exposure on Public Repositories
  let timeFrame = 5m;
  CyfirmaSPESourceCodeAlerts_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=signature,
      Source=source,
      Impact=impact,
      Recommendation=recommendation,
      ProviderName='CYFIRMA',
      ProductName='DeCYFIR/DeTCT',
      AlertTitle=Alert_title
  | project
      TimeGenerated,
      Description,
      RiskScore,
      FirstSeen,
      LastSeen,
      AlertUID,
      UID,
      AssetType,
      AssetValue,
      Impact,
      ProductName,
      ProviderName,
      AlertTitle
description: |
  "This rule triggers when CYFIRMA detects source code related to internal or enterprise domains exposed on public platforms like GitHub. 
  Such exposure may lead to intellectual property leakage or help adversaries understand internal systems, increasing the risk of targeted attacks."

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/28e315a3-725d-4261-a6c2-e597d51541f4')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/28e315a3-725d-4261-a6c2-e597d51541f4')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "{{Description}} ",
          "alertDisplayNameFormat": "CYFIRMA Medium Severity Alert - Source Code Exposure on Public Repositories - {{AlertTitle}} ",
          "alertDynamicProperties": [
            {
              "alertProperty": "ProductName",
              "value": "ProductName"
            },
            {
              "alertProperty": "ProviderName",
              "value": "ProviderName"
            }
          ]
        },
        "alertRuleTemplateName": "28e315a3-725d-4261-a6c2-e597d51541f4",
        "customDetails": {
          "AlertUID": "AlertUID",
          "AssetType": "AssetType",
          "AssetValue": "AssetValue",
          "Description": "Description",
          "FirstSeen": "FirstSeen",
          "Impact": "Impact",
          "LastSeen": "LastSeen",
          "RiskScore": "RiskScore",
          "TimeGenerated": "TimeGenerated",
          "UID": "UID"
        },
        "description": "\"This rule triggers when CYFIRMA detects source code related to internal or enterprise domains exposed on public platforms like GitHub. \nSuch exposure may lead to intellectual property leakage or help adversaries understand internal systems, increasing the risk of targeted attacks.\"\n",
        "displayName": "CYFIRMA - Social and Public Exposure - Source Code Exposure on Public Repositories 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%20Digital%20Risk/Analytic%20Rules/SPESourceCodeExposureMediumRule.yaml",
        "query": "// Medium severity - Social and Public Exposure - Source Code Exposure on Public Repositories\nlet timeFrame = 5m;\nCyfirmaSPESourceCodeAlerts_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=signature,\n    Source=source,\n    Impact=impact,\n    Recommendation=recommendation,\n    ProviderName='CYFIRMA',\n    ProductName='DeCYFIR/DeTCT',\n    AlertTitle=Alert_title\n| project\n    TimeGenerated,\n    Description,\n    RiskScore,\n    FirstSeen,\n    LastSeen,\n    AlertUID,\n    UID,\n    AssetType,\n    AssetValue,\n    Impact,\n    ProductName,\n    ProviderName,\n    AlertTitle\n",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [
          "T1587.001",
          "T1606.001"
        ],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CredentialAccess",
          "Discovery",
          "ResourceDevelopment"
        ],
        "techniques": [
          "T1082",
          "T1587",
          "T1606"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}