Hutchins' lawyer Brian Klein told the court in Milwaukee that his client was "not guilty" of the six charges levelled at him, Motherboard reported.
He can now travel to Los Angeles and live there while he waits for his trial.
Things to do during defcon:— MalwareTech (@MalwareTechBlog) 14 August 2017
Visit red rock canyon
Be indicted by the FBI
The prosecution has claimed that Hutchins admitted to FBI agents he was the author of the code that became Kronos.
While the chargesheet filed against Hutchins only accuses him of being involved in writing and spreading Kronos, the head of a security firm, Dave Aitel of Immunity, has alleged that he was involved in WannaCry himself.
The trial is expected to take place in Milwaukee in October.