Coletar registros do Cloud IDS do Google

Este documento descreve como coletar registros do IDS do Google Cloud ativando a ingestão de telemetria do Google Cloud para o Google Security Operations e como os campos de registro do IDS do Google Cloud são mapeados para os campos do modelo de dados unificado (UDM, na sigla em inglês) do Google Security Operations.

Para mais informações, consulte Ingestão de dados para as Operações de segurança do Google.

Uma implantação típica consiste em registros do Google Cloud IDS ativados para ingestão no Google Security Operations. Cada implantação do cliente pode ser diferente dessa representação e ser mais complexa.

A implantação contém os seguintes componentes:

• Google Cloud: os serviços e produtos do Google Cloud em que você coleta registros.

• Registros de IDS do Google Cloud: os registros de IDS do Google Cloud que são ativado para ingestão no Google Security Operations.

• Google Security Operations: o Google Security Operations retém e analisa os registros do IDS do Google Cloud.

Um rótulo de transferência identifica o analisador que normaliza os dados de registro brutos para o formato estruturado do UDM. As informações neste documento se aplicam ao analisador com o rótulo de ingestão GCP_IDS.

Antes de começar

• Verifique se todos os sistemas na arquitetura de implantação estão configurados no fuso horário UTC.

Configurar o Google Cloud para ingerir os registros do Google Cloud IDS

Para ingerir registros do Google Cloud IDS no Google Security Operations, siga as etapas na página Ingerir registros do Google Cloud nas operações de segurança do Google.

Em caso de problemas ao ingerir registros do Google Cloud IDS, entre em contato com o suporte de Operações de segurança do Google.

Referência de mapeamento de campo

Referência de mapeamento de campo: GCP_IDS

A tabela a seguir lista os campos de registro do tipo de registro GCP_IDS e os campos de UDM correspondentes.

Descontinuado:

Os seguintes campos labels para substantivos do UDM foram descontinuados: about.labels, intermediary.labels, observer.labels, principal.labels, src.labels, security_result.about.labels e target.labels. Para os analisadores atuais, além desses campos do UDM, os campos de registros também são mapeados para campos do UDM additional.fields de chave/valor. Para novos analisadores, as configurações de chave-valor nos campos de UDM additional.fields são usadas no lugar dos campos de UDM labels descontinuados. Recomendamos que você atualize as regras atuais para usar as configurações de chave/valor nos campos UDM additional.fields em vez dos campos UDM labels descontinuados.

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.
	idm.is_alert	If the jsonPayload.alert_severity log field value is equal to CRITICAL, then the idm.is_alert UDM field is set to true.
	idm.is_significant	If the jsonPayload.alert_severity log field value is equal to CRITICAL, then the idm.is_significant UDM field is set to true.
	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.

A seguir

• Ingestão de dados no Google Security Operations