The npm package bs-bs-core version 35.1.6 contains malicious code that downloads and executes a platform-specific binary from obfuscated Cloudflare Workers hostnames. This binary is saved to temporary directories and executed detached from the main process. The package also includes an obfuscated analytics SDK loader that uses child process APIs to spawn the binary. The downloaded executable is unsigned, not hash-verified, and not sourced from the package publisher, indicating a supply chain compromise or malicious intent.