A Windows exploit that grants system-level access to attackers is currently up for sale on the dark web for $220,000.
Generally speaking, you don't really want to be downloading anything from the dark web, if you can help it: The dark web waters are swimming with malware, scams, and otherwise unwholesome material.
A new ClickFix attack variant uses fake CAPTCHA pages instructing victims to paste and execute malicious commands in Windows Terminal.