Sig for discovery of registry mount points and volumes

[kevross33]

Added two signatures for discovering registry mount points and enumerating storage devices.

Example for ZOVWiper

[gemini-code-assist]

Summary of Changes

Hello @kevross33, 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 analysis capabilities for Windows malware by integrating two new Cuckoo signatures. These additions are designed to detect sophisticated discovery techniques used by malicious software, particularly ransomware and wipers, to identify and enumerate connected storage devices and mount points. The new signatures provide deeper insights into how threats map out a system's storage landscape, thereby improving the overall detection and understanding of their behavior.

Highlights

• New Discovery Signatures: Introduced two new Cuckoo signatures, 'DiscoverRegistryMountPoints' and 'MountPointsVolumeDiscovery', to enhance the detection of malware attempting to discover system storage.
• Registry Mount Point Detection: The 'DiscoverRegistryMountPoints' signature identifies historical or connected removable/network drives by querying specific registry mount points ('MountPoints2\CPC\Volume').
• Volume Enumeration Detection: The 'MountPointsVolumeDiscovery' signature detects attempts to enumerate storage devices by monitoring access to registry mount points and subsequent resolution of volume paths using 'GetVolumeNameForVolumeMountPoint' APIs.

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Changelog

• modules/signatures/windows/discovery_mountpoints.py
  • Added 'DiscoverRegistryMountPoints' signature to detect registry mount point queries.
  • Added 'MountPointsVolumeDiscovery' signature to detect volume enumeration via mount points.

Activity

• No human activity has been recorded on this pull request yet.

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[gemini-code-assist]

Code Review

The pull request introduces two new signatures for discovering registry mount points and enumerating storage devices. The DiscoverRegistryMountPoints class identifies historical or connected drives by querying registry keys, while MountPointsVolumeDiscovery detects the enumeration of storage devices by monitoring API calls related to opening registry keys and resolving volume paths. The code is well-structured and addresses the stated objective.