The npm package 'date-uuid' versions 1.0.0 and 1.0.1 contains malicious code that executes an attacker-controlled script. Upon import, it reads specific lines from the caller's README.md, reconstructs a URL, fetches a script from that URL, saves it as a temporary .vbs file, and executes it. This behavior is unrelated to the advertised UUID functionality and uses obfuscation techniques to evade detection.