CYFIRMA - Attack Surface - Configuration High Rule

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Id	30206b45-75d2-4c6a-87c5-f0861c1f2870
Rulename	CYFIRMA - Attack Surface - Configuration High Rule
Description	This alert is generated when CYFIRMA detects a critical misconfiguration in a public-facing asset or service. Such misconfigurations may include exposed admin interfaces, default credentials, open directory listings, or insecure protocols, which significantly increase the attack surface."
Severity	High
Tactics	InitialAccess Discovery Persistence Execution DefenseEvasion CredentialAccess Collection Reconnaissance
Techniques	T1190 T1087 T1046 T1136 T1059 T1566 T1070 T1027 T1505 T1555 T1114 T1595
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/ASConfigurationsHighRule.yaml
Version	1.0.1
Arm template	30206b45-75d2-4c6a-87c5-f0861c1f2870.json

KQL

// High Severity - Attack Surface - Misconfiguration Detected
let timeFrame = 5m;
CyfirmaASConfigurationAlerts_CL
| where severity == 'Critical' and TimeGenerated between (ago(timeFrame) .. now())
| extend
    Description=description,
    FirstSeen=first_seen,
    LastSeen=last_seen,
    RiskScore=risk_score,
    Domain=sub_domain,
    TopDomain=top_domain,
    NetworkIP=ip,
    AlertUID=alert_uid,
    UID=uid,
    Softwares=software,
    WebAppFirewall=web_app_firewall,
    ClickJackingDefence=click_jacking_defence,
    ContentSecurityPolicy=content_security_policy,
    CookieXssProtection=cookie_xss_protection,
    DataInjectionDefence=data_injection_defence,
    DomainStatus=domain_status,
    MissingEPPCodes=missing_epp_codes,
    SecureCookie=secure_cookie,
    SetCookieHttpsOnly=set_cookie_https_only,
    XFrameOptions=x_frame_options,
    X_XssProtection=x_xss_protection,
    ProviderName='CYFIRMA',
    ProductName='DeCYFIR/DeTCT'
| project
    TimeGenerated,
    Description,
    Domain,
    TopDomain,
    RiskScore,
    FirstSeen,
    LastSeen,
    NetworkIP,
    AlertUID,
    UID,
    Softwares,
    WebAppFirewall,
    ClickJackingDefence,
    ContentSecurityPolicy,
    CookieXssProtection,
    DataInjectionDefence,
    DomainStatus,
    MissingEPPCodes,
    SecureCookie,
    SetCookieHttpsOnly,
    XFrameOptions,
    X_XssProtection,
    ProviderName,
    ProductName

YAML

kind: Scheduled
incidentConfiguration:
  groupingConfiguration:
    matchingMethod: AllEntities
    enabled: false
    reopenClosedIncident: false
    lookbackDuration: PT5H
  createIncident: true
requiredDataConnectors:
- connectorId: CyfirmaAttackSurfaceAlertsConnector
  dataTypes:
  - CyfirmaASConfigurationAlerts_CL
relevantTechniques:
- T1190
- T1087
- T1046
- T1136
- T1059
- T1566
- T1070
- T1027
- T1505
- T1555
- T1114
- T1595
entityMappings:
- entityType: DNS
  fieldMappings:
  - identifier: DomainName
    columnName: Domain
- entityType: Host
  fieldMappings:
  - identifier: HostName
    columnName: TopDomain
  - identifier: DnsDomain
    columnName: Domain
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: NetworkIP
query: |
  // High Severity - Attack Surface - Misconfiguration Detected
  let timeFrame = 5m;
  CyfirmaASConfigurationAlerts_CL
  | where severity == 'Critical' and TimeGenerated between (ago(timeFrame) .. now())
  | extend
      Description=description,
      FirstSeen=first_seen,
      LastSeen=last_seen,
      RiskScore=risk_score,
      Domain=sub_domain,
      TopDomain=top_domain,
      NetworkIP=ip,
      AlertUID=alert_uid,
      UID=uid,
      Softwares=software,
      WebAppFirewall=web_app_firewall,
      ClickJackingDefence=click_jacking_defence,
      ContentSecurityPolicy=content_security_policy,
      CookieXssProtection=cookie_xss_protection,
      DataInjectionDefence=data_injection_defence,
      DomainStatus=domain_status,
      MissingEPPCodes=missing_epp_codes,
      SecureCookie=secure_cookie,
      SetCookieHttpsOnly=set_cookie_https_only,
      XFrameOptions=x_frame_options,
      X_XssProtection=x_xss_protection,
      ProviderName='CYFIRMA',
      ProductName='DeCYFIR/DeTCT'
  | project
      TimeGenerated,
      Description,
      Domain,
      TopDomain,
      RiskScore,
      FirstSeen,
      LastSeen,
      NetworkIP,
      AlertUID,
      UID,
      Softwares,
      WebAppFirewall,
      ClickJackingDefence,
      ContentSecurityPolicy,
      CookieXssProtection,
      DataInjectionDefence,
      DomainStatus,
      MissingEPPCodes,
      SecureCookie,
      SetCookieHttpsOnly,
      XFrameOptions,
      X_XssProtection,
      ProviderName,
      ProductName  
triggerThreshold: 0
customDetails:
  XFrameOptions: XFrameOptions
  CookieXssProtection: CookieXssProtection
  InjectionDefence: DataInjectionDefence
  X_XssProtection: X_XssProtection
  SecurityPolicy: ContentSecurityPolicy
  LastSeen: LastSeen
  FirstSeen: FirstSeen
  RiskScore: RiskScore
  SetCookieHttpsOnly: SetCookieHttpsOnly
  DomainStatus: DomainStatus
  Softwares: Softwares
  UID: UID
  AlertUID: AlertUID
  WebAppFirewall: WebAppFirewall
  SecureCookie: SecureCookie
  MissingEPPCodes: MissingEPPCodes
  ClickJackingDefence: ClickJackingDefence
  TimeGenerated: TimeGenerated
alertDetailsOverride:
  alertDynamicProperties:
  - alertProperty: ProductName
    value: ProductName
  - alertProperty: ProviderName
    value: ProviderName
  alertDisplayNameFormat: 'CYFIRMA - High Risk Misconfiguration Identified in Assets - Domain: {{Domain}} , IP: {{NetworkIP}} '
  alertDescriptionFormat: 'CYFIRMA - High Risk Misconfiguration Identified in Assets - {{Description}} '
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Attack Surface/Analytic Rules/ASConfigurationsHighRule.yaml
queryPeriod: 5m
tactics:
- InitialAccess
- Discovery
- Persistence
- Execution
- DefenseEvasion
- CredentialAccess
- Collection
- Reconnaissance
name: CYFIRMA - Attack Surface - Configuration High Rule
status: Available
eventGroupingSettings:
  aggregationKind: AlertPerResult
description: |
  This alert is generated when CYFIRMA detects a critical misconfiguration in a public-facing asset or service. 
  Such misconfigurations may include exposed admin interfaces, default credentials, open directory listings, or insecure protocols, which significantly increase the attack surface."  
id: 30206b45-75d2-4c6a-87c5-f0861c1f2870
version: 1.0.1
triggerOperator: gt
queryFrequency: 5m
severity: High

ARM