The npm package dolyame-ui-collapseblock version 35.8.1 contains malicious code that automatically fetches and executes an attacker-controlled native binary upon import. The binary is retrieved from obfuscated Cloudflare Workers hosts or via a DNS-TXT covert channel if HTTPS fetches fail. The payload is saved to temporary directories with disguised filenames, given executable permissions, and launched detached from the main process. There is no version pinning or integrity verification, allowing arbitrary code execution unrelated to the package's intended functionality. This behavior is consistent with hostile dropper malware tradecraft.