vmray: extract number features for registry key handles

[AdeboyeDN]

Closes #2815

Checklist

• CHANGELOG update added
• Tests added
• No documentation update needed

[gemini-code-assist]

Summary of Changes

Hello @AdeboyeDN, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the VMRay feature extraction capabilities by enabling the accurate interpretation and extraction of numerical values from specific void_ptr parameters. By whitelisting parameters like hKey and hKeyRoot, the system can now convert their string representations into meaningful numerical features, providing more precise and comprehensive analysis of API call arguments. This change addresses a limitation where such parameters were previously overlooked, improving the overall fidelity of the extracted features.

Highlights

• VMRay Feature Extraction Enhancement: Introduced a mechanism to correctly extract numerical features from specific void_ptr parameters (e.g., hKey, hKeyRoot) during VMRay call analysis, which were previously skipped.
• Whitelisted Parameters: Defined a VOID_PTR_NUMBER_PARAMS frozenset to explicitly list void_ptr parameters that should be interpreted as numbers, including hKey, hKeyRoot, hkResult, and samDesired.
• Robust Parsing: Implemented parsing logic with error handling to convert the string representation of these whitelisted void_ptr values into numerical features, logging debug messages for any parsing failures.
• Test Coverage: Added a new test, test_vmray_hkey_whitelist, to ensure the VOID_PTR_NUMBER_PARAMS frozenset contains all expected whitelisted parameters.
• Changelog Update: Updated the CHANGELOG.md to document the new feature of extracting number features from whitelisted void_ptr parameters in VMRay.

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[gemini-code-assist]

Code Review

This pull request introduces a useful feature to extract numeric values from specific void* parameters in VMRay logs, which is particularly helpful for analyzing registry-related API calls. The implementation is clean, includes error handling, and is accompanied by a new test and a changelog entry. My review includes a suggestion to make the new test stricter to better safeguard against unintended changes to the parameter whitelist.

[mike-hunhoff]

nice work @AdeboyeDN , I've left a couple of quick comments for your review.

[mike-hunhoff]

Also, @AdeboyeDN please sync your branch with master.

[AdeboyeDN]

@mike-hunhoff everything should be good now

[AdeboyeDN]

Hi @mike-hunhoff , I see you’ve approved the PR. Is there anything else blocking it from being merged?

[mike-hunhoff]

Hi @mike-hunhoff , I see you’ve approved the PR. Is there anything else blocking it from being merged?

@AdeboyeDN your PR looks good, but I'm waiting on a bug to be fixed in the upstream so we can run the unit tests here to verify that they fully pass. Thank you for your patience.