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 These vulnerabilities may include outdated software, missing patches, insecure services, or misconfigurations that can be exploited by threat actors.Such exposure significantly increases the risk of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	1.0.1
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

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."
version: 1.0.1
tactics:
- InitialAccess
- Discovery
- DefenseEvasion
- Persistence
- Execution
- Impact
- PrivilegeEscalation
queryFrequency: 5m
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  
status: Available
kind: Scheduled
triggerThreshold: 0
customDetails:
  HostProvider: HostProvider
  TimeGenerated: TimeGenerated
  UID: UID
  OpenPorts: OpenPorts
  LastSeen: LastSeen
  FirstSeen: FirstSeen
  vulnerableProducts: VulnerabilityProducts
  RiskScore: RiskScore
  WebServer: WebServer
  WebServerVersion: WebServerVersion
  Country: Country
  AlertUID: AlertUID
  Vulnerabilities: Vulnerabilities
  Softwares: Softwares
alertDetailsOverride:
  alertDescriptionFormat: CYFIRMA - High Severity Domain/IP Vulnerability Exposure Detected - {{Description}}
  alertDynamicProperties:
  - value: ProductName
    alertProperty: ProductName
  - value: ProviderName
    alertProperty: ProviderName
  alertDisplayNameFormat: 'CYFIRMA - High Severity Domain/IP Vulnerability Exposure Detected - Domain: {{Domain}}, IP: {{NetworkIP}}'
triggerOperator: gt
relevantTechniques:
- T1505
- T1068
- T1046
- T1499
id: fbe4f5e0-d93e-4c93-8cf9-925eb8ea7f2e
queryPeriod: 5m
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
eventGroupingSettings:
  aggregationKind: AlertPerResult
severity: High
name: CYFIRMA - Attack Surface - Domain/IP Vulnerability Exposure High Rule
incidentConfiguration:
  groupingConfiguration:
    lookbackDuration: PT5H
    enabled: false
    reopenClosedIncident: false
    matchingMethod: AllEntities
  createIncident: true
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Attack Surface/Analytic Rules/ASDomainIPVulnerabilitiesHighRule.yaml
requiredDataConnectors:
- dataTypes:
  - CyfirmaASDomainIPVulnerabilityAlerts_CL
  connectorId: CyfirmaAttackSurfaceAlertsConnector

ARM