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Este documento descreve um tipo de descoberta de ameaça no Security Command Center. As descobertas de ameaças são geradas por
detectores de ameaças quando eles detectam
uma ameaça potencial nos seus recursos da nuvem. Para uma lista completa das descobertas de ameaças disponíveis, consulte o índice de descobertas de ameaças.
Visão geral
Um processo começou com o redirecionamento de stream para um soquete conectado remotamente. A geração
de um shell conectado à rede pode permitir que um invasor execute ações arbitrárias
após um comprometimento inicial limitado.
Nome completo do projeto: o projeto Google Cloud afetado
Links relacionados, principalmente os seguintes campos:
Indicador do VirusTotal: link para a página de análise do VirusTotal
Na guia JSON, observe os seguintes campos:
resource:
project_display_name: o nome do projeto que contém o recurso.
sourceProperties:
Reverse_Shell_Stdin_Redirection_Dst_Ip: o endereço IP remoto da conexão;
Reverse_Shell_Stdin_Redirection_Dst_Port: a porta remota;
Reverse_Shell_Stdin_Redirection_Src_Ip: o endereço IP local da conexão;
Reverse_Shell_Stdin_Redirection_Src_Port: a porta local;
Container_Image_Uri: o nome da imagem do contêiner que está sendo executada.
Procure descobertas relacionadas que ocorreram em um momento semelhante para o contêiner afetado. Essas descobertas podem indicar que a atividade era maliciosa, em vez de uma falha em seguir as práticas recomendadas.
Verifique o valor de hash SHA-256 do binário sinalizado como malicioso no
VirusTotal clicando no link em
Indicador do VirusTotal. O VirusTotal é um serviço da Alphabet que
fornece contexto sobre arquivos, URLs, domínios e endereços IP
potencialmente maliciosos.
Para desenvolver um plano de resposta, combine os resultados da investigação com a pesquisa do MITRE e a análise do VirusTotal.
[[["Fácil de entender","easyToUnderstand","thumb-up"],["Meu problema foi resolvido","solvedMyProblem","thumb-up"],["Outro","otherUp","thumb-up"]],[["Difícil de entender","hardToUnderstand","thumb-down"],["Informações incorretas ou exemplo de código","incorrectInformationOrSampleCode","thumb-down"],["Não contém as informações/amostras de que eu preciso","missingTheInformationSamplesINeed","thumb-down"],["Problema na tradução","translationIssue","thumb-down"],["Outro","otherDown","thumb-down"]],["Última atualização 2025-09-05 UTC."],[],[],null,["| Premium and Enterprise [service tiers](/security-command-center/docs/service-tiers)\n\nThis document describes a threat finding type in Security Command Center. Threat findings are generated by\n[threat detectors](/security-command-center/docs/concepts-security-sources#threats) when they detect\na potential threat in your cloud resources. For a full list of available threat findings, see [Threat findings index](/security-command-center/docs/threat-findings-index).\n\nOverview\n\nA process started with stream redirection to a remote connected socket. Spawning\na network-connected shell can allow an attacker to perform arbitrary actions\nafter a limited initial compromise.\n\n[Cloud Run Threat Detection](/security-command-center/docs/cloud-run-threat-detection-overview) is the source\nof this finding.\n\nHow to respond\n\nTo respond to this finding, do the following:\n\nReview finding details\n\n1. Open the `Reverse Shell` finding as directed in [Reviewing\n findings](/security-command-center/docs/how-to-investigate-threats#reviewing_findings).\n Review the details on the **Summary** and **JSON** tabs.\n\n2. On the **Summary** tab, review the information in the following sections:\n\n - **What was detected** , especially the following fields:\n - **Program binary**: the absolute path of the process started with stream redirection to a remote socket\n - **Arguments**: the arguments provided when the process binary was invoked\n - **Affected resource** , especially the following fields:\n - **Resource full name** : the [full resource name](/apis/design/resource_names) of the affected Cloud Run resource\n - **Project full name**: the affected Google Cloud project\n - **Related links** , especially the following fields:\n - **VirusTotal indicator**: link to the VirusTotal analysis page\n3. On the **JSON** tab, note the following fields:\n\n - `resource`:\n - `project_display_name`: the name of the project that contains the asset.\n - `sourceProperties`:\n - `Reverse_Shell_Stdin_Redirection_Dst_Ip`: the remote IP address of the connection\n - `Reverse_Shell_Stdin_Redirection_Dst_Port`: the remote port\n - `Reverse_Shell_Stdin_Redirection_Src_Ip`: the local IP address of the connection\n - `Reverse_Shell_Stdin_Redirection_Src_Port`: the local port\n - `Container_Image_Uri`: the name of the container image being executed.\n4. Look for related findings that occurred at a similar time for the affected\n container. Such findings might indicate that this activity was malicious,\n instead of a failure to follow best practices.\n\n5. Review the settings of the affected container.\n\n6. Check the logs for the affected container.\n\nResearch attack and response methods\n\n1. Review the MITRE ATT\\&CK framework entries for this finding type: [Command and\n Scripting Interpreter](https://attack.mitre.org/techniques/T1059/) and [Ingress Tool Transfer](https://attack.mitre.org/techniques/T1105/).\n2. Check the SHA-256 hash value for the binary flagged as malicious on [VirusTotal](https://www.virustotal.com) by clicking the link in **VirusTotal indicator**. VirusTotal is an Alphabet-owned service that provides context on potentially malicious files, URLs, domains, and IP addresses.\n3. To develop a response plan, combine your investigation results with the MITRE research and VirusTotal analysis.\n\nImplement your response\n\nFor response recommendations, see [Respond to Cloud Run threat\nfindings](/security-command-center/docs/respond-cloud-run-threats).\n\nWhat's next\n\n- Learn [how to work with threat\n findings in Security Command Center](/security-command-center/docs/how-to-investigate-threats).\n- Refer to the [Threat findings index](/security-command-center/docs/threat-findings-index).\n- Learn how to [review a\n finding](/security-command-center/docs/how-to-investigate-threats#reviewing_findings) through the Google Cloud console.\n- Learn about the [services that\n generate threat findings](/security-command-center/docs/concepts-security-sources#threats)."]]
