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Recolha registos do Google Cloud IDS

Este documento descreve como pode recolher registos do Google Cloud IDS ativando o Google Cloud carregamento de telemetria para o Google Security Operations e como os campos de registo dos registos do Google Cloud IDS são mapeados para os campos do modelo de dados unificado (UDM) do Google Security Operations.

Para mais informações, consulte o artigo Ingestão de dados no Google Security Operations.

Uma implementação típica consiste em registos do Google Cloud IDS ativados para carregamento no Google Security Operations. Cada implementação do cliente pode diferir desta representação e pode ser mais complexa.

A implementação contém os seguintes componentes:

Google Cloud: os Google Cloud serviços e produtos a partir dos quais recolhe registos.
Registos do Google Cloud IDS: os registos do Google Cloud IDS que estão ativados para carregamento para o Google Security Operations.
Google Security Operations: o Google Security Operations retém e analisa os registos do Google Cloud IDS.

Uma etiqueta de carregamento identifica o analisador que normaliza os dados de registo não processados para o formato UDM estruturado. As informações neste documento aplicam-se ao analisador com a etiqueta de carregamento GCP_IDS.

Antes de começar

Certifique-se de que todos os sistemas na arquitetura de implementação estão configurados no fuso horário UTC.

Configure Google Cloud para carregar registos do Google Cloud IDS

Para carregar registos do Google Cloud IDS para o Google Security Operations, siga os passos na página Carregue Google Cloud registos para o Google Security Operations.

Se tiver problemas ao carregar registos do Google Cloud IDS, contacte o apoio técnico do Google Security Operations.

Formatos de registos do Google Cloud IDS suportados

O analisador do Google Cloud IDS suporta registos no formato JSON.

Registos de amostra do Google Cloud IDS suportados

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"
}

Referência de mapeamento de campos

Referência de mapeamento de campos: GCP_IDS

A tabela seguinte apresenta os campos de registo do GCP_IDS tipo de registo e os respetivos campos UDM.

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`.

O que se segue?

Carregamento de dados para o Google Security Operations

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