analyzing-packed-malware-with-upx-unpacker

Pass

Audited by Gen Agent Trust Hub on Apr 6, 2026

Risk Level: SAFEEXTERNAL_DOWNLOADSCOMMAND_EXECUTION
Full Analysis
  • [COMMAND_EXECUTION]: The scripts/agent.py script executes the upx system command using subprocess.run. The command is constructed using a list of arguments rather than a raw shell string, which is a secure practice that prevents shell injection.
  • [EXTERNAL_DOWNLOADS]: Instructions include installation of the pefile library via pip and the upx-ucl utility via apt. These are standard, well-known tools for malware analysis and do not pose a risk in this context.
  • [SAFE]: The skill provides a robust framework for repairing modified UPX headers using Python's pefile and struct modules. This functionality is consistent with its stated purpose of assisting in malware reverse engineering.
  • [SAFE]: Documentation correctly identifies the risk of analyzing malware and mandates the use of an isolated analysis environment.
Audit Metadata
Risk Level
SAFE
Analyzed
Apr 6, 2026, 06:44 PM