CYFIRMA - Attack Surface - DomainIP Vulnerability Exposure High Rule

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Id	fbe4f5e0-d93e-4c93-8cf9-925eb8ea7f2e
Rulename	CYFIRMA - Attack Surface - Domain/IP Vulnerability Exposure High Rule
Description	“This rule is triggered when CYFIRMA identifies publicly exposed vulnerabilities on domains or IP addresses within your organization’s attack surface. These vulnerabilities may include outdated software, missing patches, insecure services, or misconfigurations that can be exploited by threat actors.Such exposure significantly increases the risk of exploitation, lateral movement, or data breach. Immediate investigation and remediation are recommended.”
Severity	High
Tactics	InitialAccess Discovery DefenseEvasion Persistence Execution Impact PrivilegeEscalation
Techniques	T1505 T1068 T1046 T1499
Required data connectors	CyfirmaAttackSurfaceAlertsConnector
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 Attack Surface/Analytic Rules/ASDomainIPVulnerabilitiesHighRule.yaml
Version	1.0.0
Arm template	fbe4f5e0-d93e-4c93-8cf9-925eb8ea7f2e.json

KQL

// High Severity Domain/IP Vulnerability Exposure Detected
let timeFrame = 5m;
CyfirmaASDomainIPVulnerabilityAlerts_CL
| where severity == 'Critical' and TimeGenerated between (ago(timeFrame) .. now())
| mv-expand pvuln = possible_vulnerabilities
| extend cve = tostring(pvuln.cveNo), vulProducts = pvuln.products
| mv-expand vul_Products = vulProducts
| summarize cveList = make_set(cve, 100), vul_products1 = make_set(vul_Products, 100)    by uid
| join kind=inner (CyfirmaASDomainIPVulnerabilityAlerts_CL
    | where severity == 'Critical'
    | summarize arg_max(TimeGenerated, *) by uid)
    on uid
| extend
    Vulnerabilities = strcat_array(cveList, ', '),
    VulnerabilityProducts = strcat_array(vul_products1, ', '),
    Description=description,
    FirstSeen=first_seen,
    LastSeen=last_seen,
    RiskScore=risk_score,
    Domain=sub_domain,
    TopDomain=top_domain,
    NetworkIP=ip,
    AlertUID=alert_uid,
    UID=uid,
    OpenPorts=open_ports,
    HostProvider=host_provider,
    Country=country,
    Softwares=softwares,
    WebServer=web_server,
    WebServerVersion=web_server_version,
    ProviderName='CYFIRMA',
    ProductName='DeCYFIR/DeTCT'
| project
    TimeGenerated,
    Description,
    Domain,
    TopDomain,
    RiskScore,
    FirstSeen,
    LastSeen,
    NetworkIP,
    AlertUID,
    UID,
    Vulnerabilities,
    VulnerabilityProducts,
    OpenPorts,
    HostProvider,
    Country,
    Softwares,
    WebServer,
    WebServerVersion,
    ProviderName,
    ProductName

YAML

tactics:
- InitialAccess
- Discovery
- DefenseEvasion
- Persistence
- Execution
- Impact
- PrivilegeEscalation
name: CYFIRMA - Attack Surface - Domain/IP Vulnerability Exposure High Rule
id: fbe4f5e0-d93e-4c93-8cf9-925eb8ea7f2e
requiredDataConnectors:
- connectorId: CyfirmaAttackSurfaceAlertsConnector
  dataTypes:
  - CyfirmaASDomainIPVulnerabilityAlerts_CL
query: |
  // High Severity Domain/IP Vulnerability Exposure Detected
  let timeFrame = 5m;
  CyfirmaASDomainIPVulnerabilityAlerts_CL
  | where severity == 'Critical' and TimeGenerated between (ago(timeFrame) .. now())
  | mv-expand pvuln = possible_vulnerabilities
  | extend cve = tostring(pvuln.cveNo), vulProducts = pvuln.products
  | mv-expand vul_Products = vulProducts
  | summarize cveList = make_set(cve, 100), vul_products1 = make_set(vul_Products, 100)    by uid
  | join kind=inner (CyfirmaASDomainIPVulnerabilityAlerts_CL
      | where severity == 'Critical'
      | summarize arg_max(TimeGenerated, *) by uid)
      on uid
  | extend
      Vulnerabilities = strcat_array(cveList, ', '),
      VulnerabilityProducts = strcat_array(vul_products1, ', '),
      Description=description,
      FirstSeen=first_seen,
      LastSeen=last_seen,
      RiskScore=risk_score,
      Domain=sub_domain,
      TopDomain=top_domain,
      NetworkIP=ip,
      AlertUID=alert_uid,
      UID=uid,
      OpenPorts=open_ports,
      HostProvider=host_provider,
      Country=country,
      Softwares=softwares,
      WebServer=web_server,
      WebServerVersion=web_server_version,
      ProviderName='CYFIRMA',
      ProductName='DeCYFIR/DeTCT'
  | project
      TimeGenerated,
      Description,
      Domain,
      TopDomain,
      RiskScore,
      FirstSeen,
      LastSeen,
      NetworkIP,
      AlertUID,
      UID,
      Vulnerabilities,
      VulnerabilityProducts,
      OpenPorts,
      HostProvider,
      Country,
      Softwares,
      WebServer,
      WebServerVersion,
      ProviderName,
      ProductName  
eventGroupingSettings:
  aggregationKind: AlertPerResult
relevantTechniques:
- T1505
- T1068
- T1046
- T1499
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    matchingMethod: AllEntities
    reopenClosedIncident: false
    lookbackDuration: 5h
    enabled: false
description: |
    "This rule is triggered when CYFIRMA identifies publicly exposed vulnerabilities on domains or IP addresses within your organization's attack surface. These vulnerabilities may include outdated software, missing patches, insecure services, or misconfigurations that can be exploited by threat actors.Such exposure significantly increases the risk of exploitation, lateral movement, or data breach. Immediate investigation and remediation are recommended."
triggerOperator: gt
queryPeriod: 5m
severity: High
entityMappings:
- fieldMappings:
  - identifier: DomainName
    columnName: Domain
  entityType: DNS
- fieldMappings:
  - identifier: HostName
    columnName: TopDomain
  - identifier: DnsDomain
    columnName: Domain
  entityType: Host
- fieldMappings:
  - identifier: Address
    columnName: NetworkIP
  entityType: IP
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Attack Surface/Analytic Rules/ASDomainIPVulnerabilitiesHighRule.yaml
version: 1.0.0
alertDetailsOverride:
  alertDynamicProperties:
  - alertProperty: ProductName
    value: ProductName
  - alertProperty: ProviderName
    value: ProviderName
  alertDisplayNameFormat: 'CYFIRMA - High Severity Domain/IP Vulnerability Exposure Detected - Domain: {{Domain}}, IP: {{NetworkIP}}'
  alertDescriptionFormat: CYFIRMA - High Severity Domain/IP Vulnerability Exposure Detected - {{Description}}
triggerThreshold: 0
queryFrequency: 5m
kind: Scheduled
status: Available
customDetails:
  Softwares: Softwares
  OpenPorts: OpenPorts
  Vulnerabilities: Vulnerabilities
  Country: Country
  vulnerableProducts: VulnerabilityProducts
  TimeGenerated: TimeGenerated
  WebServerVersion: WebServerVersion
  UID: UID
  HostProvider: HostProvider
  LastSeen: LastSeen
  RiskScore: RiskScore
  WebServer: WebServer
  FirstSeen: FirstSeen
  AlertUID: AlertUID

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/fbe4f5e0-d93e-4c93-8cf9-925eb8ea7f2e')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/fbe4f5e0-d93e-4c93-8cf9-925eb8ea7f2e')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "CYFIRMA - High Severity Domain/IP Vulnerability Exposure Detected - {{Description}}",
          "alertDisplayNameFormat": "CYFIRMA - High Severity Domain/IP Vulnerability Exposure Detected - Domain: {{Domain}}, IP: {{NetworkIP}}",
          "alertDynamicProperties": [
            {
              "alertProperty": "ProductName",
              "value": "ProductName"
            },
            {
              "alertProperty": "ProviderName",
              "value": "ProviderName"
            }
          ]
        },
        "alertRuleTemplateName": "fbe4f5e0-d93e-4c93-8cf9-925eb8ea7f2e",
        "customDetails": {
          "AlertUID": "AlertUID",
          "Country": "Country",
          "FirstSeen": "FirstSeen",
          "HostProvider": "HostProvider",
          "LastSeen": "LastSeen",
          "OpenPorts": "OpenPorts",
          "RiskScore": "RiskScore",
          "Softwares": "Softwares",
          "TimeGenerated": "TimeGenerated",
          "UID": "UID",
          "Vulnerabilities": "Vulnerabilities",
          "vulnerableProducts": "VulnerabilityProducts",
          "WebServer": "WebServer",
          "WebServerVersion": "WebServerVersion"
        },
        "description": "\"This rule is triggered when CYFIRMA identifies publicly exposed vulnerabilities on domains or IP addresses within your organization's attack surface. These vulnerabilities may include outdated software, missing patches, insecure services, or misconfigurations that can be exploited by threat actors.Such exposure significantly increases the risk of exploitation, lateral movement, or data breach. Immediate investigation and remediation are recommended.\"\n",
        "displayName": "CYFIRMA - Attack Surface - Domain/IP Vulnerability Exposure High Rule",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "DNS",
            "fieldMappings": [
              {
                "columnName": "Domain",
                "identifier": "DomainName"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "TopDomain",
                "identifier": "HostName"
              },
              {
                "columnName": "Domain",
                "identifier": "DnsDomain"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "NetworkIP",
                "identifier": "Address"
              }
            ]
          }
        ],
        "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 Attack Surface/Analytic Rules/ASDomainIPVulnerabilitiesHighRule.yaml",
        "query": "// High Severity Domain/IP Vulnerability Exposure Detected\nlet timeFrame = 5m;\nCyfirmaASDomainIPVulnerabilityAlerts_CL\n| where severity == 'Critical' and TimeGenerated between (ago(timeFrame) .. now())\n| mv-expand pvuln = possible_vulnerabilities\n| extend cve = tostring(pvuln.cveNo), vulProducts = pvuln.products\n| mv-expand vul_Products = vulProducts\n| summarize cveList = make_set(cve, 100), vul_products1 = make_set(vul_Products, 100)    by uid\n| join kind=inner (CyfirmaASDomainIPVulnerabilityAlerts_CL\n    | where severity == 'Critical'\n    | summarize arg_max(TimeGenerated, *) by uid)\n    on uid\n| extend\n    Vulnerabilities = strcat_array(cveList, ', '),\n    VulnerabilityProducts = strcat_array(vul_products1, ', '),\n    Description=description,\n    FirstSeen=first_seen,\n    LastSeen=last_seen,\n    RiskScore=risk_score,\n    Domain=sub_domain,\n    TopDomain=top_domain,\n    NetworkIP=ip,\n    AlertUID=alert_uid,\n    UID=uid,\n    OpenPorts=open_ports,\n    HostProvider=host_provider,\n    Country=country,\n    Softwares=softwares,\n    WebServer=web_server,\n    WebServerVersion=web_server_version,\n    ProviderName='CYFIRMA',\n    ProductName='DeCYFIR/DeTCT'\n| project\n    TimeGenerated,\n    Description,\n    Domain,\n    TopDomain,\n    RiskScore,\n    FirstSeen,\n    LastSeen,\n    NetworkIP,\n    AlertUID,\n    UID,\n    Vulnerabilities,\n    VulnerabilityProducts,\n    OpenPorts,\n    HostProvider,\n    Country,\n    Softwares,\n    WebServer,\n    WebServerVersion,\n    ProviderName,\n    ProductName\n",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "DefenseEvasion",
          "Discovery",
          "Execution",
          "Impact",
          "InitialAccess",
          "Persistence",
          "PrivilegeEscalation"
        ],
        "techniques": [
          "T1046",
          "T1068",
          "T1499",
          "T1505"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}