Recopila registros del IDS de Google Cloud

En este documento, se describe cómo puedes recopilar registros del IDS de Google Cloud habilitando la Google Cloud incorporación de telemetría a Google Security Operations y cómo los campos de registro del IDS de Google Cloud se asignan a los campos del Modelo de datos unificado (UDM) de Google Security Operations.

Para obtener más información, consulta Transferencia de datos a Google Security Operations.

Una implementación típica consta de registros del IDS de Google Cloud habilitados para la transferencia a Google Security Operations. Cada implementación del cliente puede diferir de esta representación y ser más compleja.

La implementación contiene los siguientes componentes:

  • Google Cloud: Los Google Cloud servicios y productos de los que recopilas registros.

  • Registros del IDS de Google Cloud: Son los registros del IDS de Google Cloud que están habilitados para la transferencia a Google Security Operations.

  • Google Security Operations: Google Security Operations retiene y analiza los registros del IDS de Google Cloud.

Una etiqueta de transferencia identifica el analizador que normaliza los datos de registro sin procesar en formato UDM estructurado. La información de este documento se aplica al analizador con la etiqueta de transferencia GCP_IDS.

Antes de comenzar

  • Asegúrate de que todos los sistemas de la arquitectura de implementación estén configurados en la zona horaria UTC.

Configura Google Cloud para transferir registros de IDS de Google Cloud

Para transferir los registros del IDS de Google Cloud a Google Security Operations, sigue los pasos que se indican en la página Ingest Google Cloud logs to Google Security Operations.

Si tienes problemas para transferir registros del IDS de Google Cloud, comunícate con el equipo de asistencia de Operaciones de seguridad de Google.

Formatos de registro de IDS de Google Cloud compatibles

El analizador de IDS de Google Cloud admite registros en formato JSON.

Registros de muestra de IDS de Google Cloud compatibles

  • JSON:

    {
      "insertId": "5cb7ac422679042bcd8f0a84700c23c0-1@a1",
      "jsonPayload": {
        "alert_severity": "INFORMATIONAL",
        "alert_time": "2021-09-08T12:10:19Z",
        "application": "ssl",
        "category": "protocol-anomaly",
        "destination_ip_address": "198.51.100.0",
        "destination_port": "443",
        "details": "This signature detects suspicious and non-RFC compliant SSL traffic on port 443. This could be associated with applications sending non SSL traffic using port 443 or indicate possible malicious activity.",
        "direction": "client-to-server",
        "ip_protocol": "tcp",
        "name": "Non-RFC Compliant SSL Traffic on Port 443",
        "network": "abcd-prod-pod111-shared",
        "repeat_count": "1",
        "session_id": "1457377",
        "source_ip_address": "198.51.100.0",
        "source_port": "62543",
        "threat_id": "56112",
        "type": "vulnerability",
        "uri_or_filename": ""
      },
      "logName": "projects/abcd-prod-mnop-pod555-infra/logs/ids.googleapis.com%2Fthreat",
      "receiveTimestamp": "2021-09-08T12:10:23.953458826Z",
      "resource": {
        "labels": {
          "id": "abcd-prod-mnop-pod555-cloudidsendpoint-info",
          "location": "us-central1-a",
          "resource_container": "projects/158110290042"
        },
        "type": "ids.googleapis.com/Endpoint"
      },
      "timestamp": "2021-09-08T12:10:19Z"
    }
    

Referencia de la asignación de campos

Referencia de asignación de campos: GCP_IDS

En la siguiente tabla, se enumeran los campos de registro del tipo de registro GCP_IDS y sus campos de UDM correspondientes.

Log field UDM mapping Logic
insertId metadata.product_log_id
jsonPayload.alert_severity security_result.severity
jsonPayload.alert_time metadata.event_timestamp
jsonPayload.application principal.application If the jsonPayload.direction log field value is equal to server-to-client, then the jsonPayload.application log field is mapped to the principal.application UDM field.
jsonPayload.application target.application If the jsonPayload.direction log field value is equal to client-to-server or the logName log field value matches the regular expression pattern traffic, then the jsonPayload.application log field is mapped to the target.application UDM field.
jsonPayload.category security_result.category_details
jsonPayload.cves extensions.vulns.vulnerabilities.cve_id If the jsonPayload.cves log field value is not empty, then the jsonPayload.cves log field is mapped to the extensions.vulns.vulnerabilities.cve_id UDM field.
jsonPayload.destination_ip_address target.ip
jsonPayload.destination_port target.port
jsonPayload.details extensions.vulns.vulnerabilities.description If the jsonPayload.cves log field value is not empty, then the jsonPayload.details log field is mapped to the extensions.vulns.vulnerabilities.description UDM field.
jsonPayload.direction network.direction If the jsonPayload.direction log field value is equal to client-to-server, then the network.direction UDM field is set to OUTBOUND.

Else, if the jsonPayload.direction log field value is equal to server-to-client, then the network.direction UDM field is set to INBOUND.
jsonPayload.elapsed_time network.session_duration.seconds
jsonPayload.ip_protocol network.ip_protocol If the jsonPayload.ip_protocol log field value contains one of the following values, then the network.ip_protocol UDM field is set to ICMP.
  • 1
  • ICMP
  • ICMPV6
  • 58
  • 1.0
  • 58.0
Else, if the jsonPayload.ip_protocol log field value contains one of the following values, then the network.ip_protocol UDM field is set to IGMP.
  • 2
  • IGMP
  • 2.0
Else, if the jsonPayload.ip_protocol log field value contains one of the following values, then the network.ip_protocol UDM field is set to TCP.
  • 6
  • TCP
  • 6.0
Else, if the jsonPayload.ip_protocol log field value contains one of the following values, then the network.ip_protocol UDM field is set to UDP.
  • 17
  • UDP
  • 17.0
Else, if the jsonPayload.ip_protocol log field value contains one of the following values, then the network.ip_protocol UDM field is set to IP6IN4.
  • 41
  • IP6IN4
  • 41.0
Else, if the jsonPayload.ip_protocol log field value contains one of the following values, then the network.ip_protocol UDM field is set to GRE.
  • 47
  • GRE
  • 47.0
Else, if the jsonPayload.ip_protocol log field value contains one of the following values, then the network.ip_protocol UDM field is set to ESP.
  • 50
  • ESP
  • 50.0
Else, if the jsonPayload.ip_protocol log field value contains one of the following values, then the network.ip_protocol UDM field is set to EIGRP.
  • 88
  • EIGRP
  • 88.0
Else, if the jsonPayload.ip_protocol log field value contains one of the following values, then the network.ip_protocol UDM field is set to ETHERIP.
  • 97
  • ETHERIP
  • 97.0
Else, if the jsonPayload.ip_protocol log field value contains one of the following values, then the network.ip_protocol UDM field is set to PIM.
  • 103
  • PIM
  • 103.0
Else, if the jsonPayload.ip_protocol log field value contains one of the following values, then the network.ip_protocol UDM field is set to VRRP.
  • 112
  • VRRP
  • 112.0
jsonPayload.name security_result.threat_name
jsonPayload.network target.resource.name If the jsonPayload.direction log field value is equal to client-to-server or the logName log field value matches the regular expression pattern traffic, then the jsonPayload.network log field is mapped to the target.resource.name UDM field.
jsonPayload.network principal.resource.name If the jsonPayload.direction log field value is equal to server-to-client, then the jsonPayload.network log field is mapped to the principal.resource.name UDM field.
target.resource.resource_type If the jsonPayload.direction log field value is equal to client-to-server or the logName log field value matches the regular expression pattern traffic, then the target.resource.resource_type UDM field is set to VPC_NETWORK.
principal.resource.resource_type If the jsonPayload.direction log field value is equal to server-to-client, then the principal.resource.resource_type UDM field is set to VPC_NETWORK.
jsonPayload.repeat_count security_result.detection_fields[repeat_count]
jsonPayload.session_id network.session_id
jsonPayload.source_ip_address principal.ip
jsonPayload.source_port principal.port
jsonPayload.start_time about.labels[start_time] (deprecated)
jsonPayload.start_time additional.fields[start_time]
jsonPayload.threat_id security_result.threat_id
jsonPayload.total_bytes about.labels[total_bytes] (deprecated)
jsonPayload.total_bytes additional.fields[total_bytes]
jsonPayload.total_packets about.labels[total_packets] (deprecated)
jsonPayload.total_packets additional.fields[total_packets]
jsonPayload.type security_result.detection_fields[type]
jsonPayload.uri_or_filename target.file.full_path
logName security_result.category_details
receiveTimestamp metadata.collected_timestamp
resource.labels.id observer.resource.product_object_id
resource.labels.location observer.location.name
resource.labels.resource_container observer.resource.name
resource.type observer.resource.resource_subtype
timestamp metadata.event_timestamp If the logName log field value matches the regular expression pattern traffic, then the timestamp log field is mapped to the metadata.event_timestamp UDM field.
observer.resource.resource_type The observer.resource.resource_type UDM field is set to CLOUD_PROJECT.
observer.resource.attribute.cloud.environment The observer.resource.attribute.cloud.environment UDM field is set to GOOGLE_CLOUD_PLATFORM.
security_result.category If the jsonPayload.category log field value is equal to dos, then the security_result.category UDM field is set to NETWORK_DENIAL_OF_SERVICE.

Else, if the jsonPayload.category log field value is equal to info-leak, then the security_result.category UDM field is set to NETWORK_SUSPICIOUS.

Else, if the jsonPayload.category log field value is equal to protocol-anomaly, then the security_result.category UDM field is set to NETWORK_MALICIOUS.

Else, if the jsonPayload.category log field value contains one of the following values, then the security_result.category UDM field is set to SOFTWARE_MALICIOUS.
  • backdoor
  • spyware
  • trojan
extensions.vulns.vulnerabilities.vendor if the jsonPayload.cves log field value is not empty, then the extensions.vulns.vulnerabilities.vendor UDM field is set to GCP_IDS.
metadata.product_name The metadata.product_name UDM field is set to GCP_IDS.
metadata.vendor_name The metadata.vendor_name UDM field is set to Google Cloud Platform.
metadata.event_type If the jsonPayload.cves log field value is not empty, then the metadata.event_type UDM field is set to SCAN_VULN_NETWROK.

Else, if the jsonPayload.source_ip_address log field value is not empty, then the metadata.event_type UDM field is set to SCAN_NETWORK.

Else, the metadata.event_type UDM field is set to GENERIC_EVENT.

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