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En este documento se describe un tipo de hallazgo de amenazas en Security Command Center. Los hallazgos de amenazas los generan los detectores de amenazas cuando detectan una amenaza potencial en tus recursos de la nube. Para ver una lista completa de las detecciones de amenazas disponibles, consulta el índice de detecciones de amenazas.
Información general
Cloud Run Threat Detection ha observado un proceso que ha generado inesperadamente un proceso de shell secundario. Este evento puede indicar que un atacante está intentando abusar de comandos y secuencias de comandos de shell.
Enlaces relacionados, especialmente el siguiente campo:
Indicador de VirusTotal: enlace a la página de análisis de VirusTotal.
En la pestaña JSON, anota los siguientes campos:
processes: un array que contiene todos los procesos relacionados con el hallazgo. Esta matriz incluye el proceso de shell secundario y el proceso principal.
resource:
project_display_name: nombre del proyecto que contiene los recursos.
Busca hallazgos relacionados que se hayan producido a una hora similar en el contenedor afectado. Estos resultados pueden indicar que la actividad era maliciosa,
en lugar de que no se hayan seguido las prácticas recomendadas.
Comprueba el valor del hash SHA-256 del archivo binario marcado como malicioso en VirusTotal haciendo clic en el enlace del indicador de VirusTotal. VirusTotal es un servicio propiedad de Alphabet que proporciona contexto sobre archivos, URLs, dominios y direcciones IP potencialmente maliciosos.
Para desarrollar un plan de respuesta, combina los resultados de tu investigación con la investigación de MITRE y el análisis de VirusTotal.
[[["Es fácil de entender","easyToUnderstand","thumb-up"],["Me ofreció una solución al problema","solvedMyProblem","thumb-up"],["Otro","otherUp","thumb-up"]],[["Es difícil de entender","hardToUnderstand","thumb-down"],["La información o el código de muestra no son correctos","incorrectInformationOrSampleCode","thumb-down"],["Me faltan las muestras o la información que necesito","missingTheInformationSamplesINeed","thumb-down"],["Problema de traducción","translationIssue","thumb-down"],["Otro","otherDown","thumb-down"]],["Última actualización: 2025-09-10 (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\nCloud Run Threat Detection observed a process that unexpectedly spawned a child shell\nprocess. This event might indicate that an attacker is trying to abuse shell\ncommands and scripts.\n\nDetection service\n\n[Cloud Run Threat Detection](/security-command-center/docs/cloud-run-threat-detection-overview)\n\nHow to respond\n\nTo respond to this finding, do the following:\n\nReview finding details\n\n1. Open the `Unexpected Child 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 - **Parent process**: the process that unexpectedly created the child shell process\n - **Child process**: the child shell process\n - **Arguments**: the arguments provided to the child shell process binary\n - **Environment variables**: the environment variables of the child shell process binary\n - **Containers**: the name of the container\n - **Containers URI**: the image URI of the container\n - **Affected resource** , especially the following fields:\n - **Resource display name**: the name of the affected resource.\n - **Resource full name** : the [full resource name](/apis/design/resource_names) of the affected Cloud Run resource\n - **Related links** , especially the following field:\n - **VirusTotal indicator**: link to the VirusTotal analysis page\n3. On the **JSON** tab, note the following fields:\n\n - `processes`: an array containing all processes related to the finding. This array includes the child shell process and the parent process.\n - `resource`:\n - `project_display_name`: name of the project that contains the assets.\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 entry for this finding type: [Command and\n Scripting Interpreter: Unix\n Shell](https://attack.mitre.org/techniques/T1059/004/).\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)."]]
