CYFIRMA - Attack Surface - Configuration Medium Rule

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Id	e1f88d08-5c32-4d35-a8ce-2f21cdb4b6de
Rulename	CYFIRMA - Attack Surface - Configuration Medium 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	Medium
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/ASConfigurationsMediumRule.yaml
Version	1.0.1
Arm template	e1f88d08-5c32-4d35-a8ce-2f21cdb4b6de.json

KQL

// Medium Severity - Attack Surface - Misconfiguration Detected
let timeFrame = 5m;
CyfirmaASConfigurationAlerts_CL
| where severity == 'High' 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

queryPeriod: 5m
query: |
  // Medium Severity - Attack Surface - Misconfiguration Detected
  let timeFrame = 5m;
  CyfirmaASConfigurationAlerts_CL
  | where severity == 'High' 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  
incidentConfiguration:
  groupingConfiguration:
    lookbackDuration: PT5H
    reopenClosedIncident: false
    matchingMethod: AllEntities
    enabled: false
  createIncident: true
name: CYFIRMA - Attack Surface - Configuration Medium Rule
entityMappings:
- fieldMappings:
  - columnName: Domain
    identifier: DomainName
  entityType: DNS
- fieldMappings:
  - columnName: TopDomain
    identifier: HostName
  - columnName: Domain
    identifier: DnsDomain
  entityType: Host
- fieldMappings:
  - columnName: NetworkIP
    identifier: Address
  entityType: IP
queryFrequency: 5m
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Attack Surface/Analytic Rules/ASConfigurationsMediumRule.yaml
alertDetailsOverride:
  alertDisplayNameFormat: 'CYFIRMA - Medium Risk Misconfiguration Identified in Assets - Domain: {{Domain}} , IP: {{NetworkIP}}'
  alertDescriptionFormat: CYFIRMA - Medium Risk Misconfiguration Identified in Assets - {{Description}}
  alertDynamicProperties:
  - value: ProductName
    alertProperty: ProductName
  - value: ProviderName
    alertProperty: ProviderName
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."  
kind: Scheduled
version: 1.0.1
eventGroupingSettings:
  aggregationKind: AlertPerResult
status: Available
severity: Medium
requiredDataConnectors:
- connectorId: CyfirmaAttackSurfaceAlertsConnector
  dataTypes:
  - CyfirmaASConfigurationAlerts_CL
triggerOperator: gt
triggerThreshold: 0
customDetails:
  X_XssProtection: X_XssProtection
  TimeGenerated: TimeGenerated
  DomainStatus: DomainStatus
  UID: UID
  WebAppFirewall: WebAppFirewall
  SecureCookie: SecureCookie
  XFrameOptions: XFrameOptions
  LastSeen: LastSeen
  AlertUID: AlertUID
  FirstSeen: FirstSeen
  CookieXssProtection: CookieXssProtection
  Softwares: Softwares
  MissingEPPCodes: MissingEPPCodes
  InjectionDefence: DataInjectionDefence
  ClickJackingDefence: ClickJackingDefence
  SetCookieHttpsOnly: SetCookieHttpsOnly
  SecurityPolicy: ContentSecurityPolicy
  RiskScore: RiskScore
tactics:
- InitialAccess
- Discovery
- Persistence
- Execution
- DefenseEvasion
- CredentialAccess
- Collection
- Reconnaissance
id: e1f88d08-5c32-4d35-a8ce-2f21cdb4b6de
relevantTechniques:
- T1190
- T1087
- T1046
- T1136
- T1059
- T1566
- T1070
- T1027
- T1505
- T1555
- T1114
- T1595

ARM