Execution: Modified Malicious Binary Executed

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This document describes a threat finding type in Security Command Center. Threat findings are generated by threat detectors when they detect a potential threat in your cloud resources. For a full list of available threat findings, see Threat findings index.

Overview

A process ran a binary that is included in the original agentic workload. The binary was modified at runtime and was identified as malicious based on threat intelligence.

Attackers commonly install exploitation tooling and malware after the initial compromise.

Agent Engine Threat Detection is the source of this finding.

How to respond

To respond to this finding, do the following:

Review finding details

1. Open the Execution: Modified Malicious Binary Executed finding as directed in Reviewing findings. Review the details on the Summary and JSON tabs.

2. On the Summary tab, review the information in the following sections:

   • What was detected, especially the following fields:
     • Program binary: the absolute path of the modified binary
     • Arguments: the arguments provided when the modified binary was invoked
   • Affected resource, especially the following fields:
     • Resource full name: the full resource name of the affected AI agent (a ReasoningEngine resource)
   • Related links, especially the following field:
     • VirusTotal indicator: link to the VirusTotal analysis page

3. Look for related findings that occurred at a similar time for the affected AI agent. Such findings might indicate that this activity was malicious, instead of a failure to follow best practices.

4. Review the settings of the affected AI agent.

5. Check the logs for the affected AI agent.

Research attack and response methods

1. Review the MITRE ATT&CK framework entries for this finding type: Ingress Tool Transfer and Native API.
2. Check the SHA-256 hash value for the binary flagged as malicious on VirusTotal 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.
3. To develop a response plan, combine your investigation results with the MITRE research and VirusTotal analysis.

What's next

• Learn how to work with threat findings in Security Command Center.
• Refer to the Threat findings index.
• Learn how to review a finding through the Google Cloud console.
• Learn about the services that generate threat findings.