The disksweep npm package versions 1.0.0 and 3.0.0 include a hidden 2.9 MB Windows PE32+ native binary at bin/native/parser.node that is not documented in the README or CHANGELOG. This binary is loaded via a native Node.js addon loader in src/index.js, granting full foreign function interface (FFI) access to the host process. The package falsely claims zero runtime dependencies, and metadata such as repository and bug URLs are placeholders, obscuring maintainer identity. Although the native binary loader is currently dormant due to module system mismatches, a simple patch could activate it, enabling execution of the opaque native payload. This pattern indicates a staged malicious payload within the package.