The United States Department of Justice (DOJ) has accused a Moises Luis Zagala Gonzalez, a 55-year-old cardiologist in Venezuela, of creating and selling ransomware tools used to extort victims. He was officially charged with attempted computer intrusions and conspiracy to commit computer intrusions. The criminal complaint was unsealed on May 16 in a federal court in Brooklyn, New York.

Zagala — who went by the nicknames “Aesculapius,” “Nosophoros” and “Nebuchadnezzar” — also allegedly trained cybercriminals how to use the ransomware and made agreements to receive a share of any profits.

One of the ransomware tools Zagala allegedly designed, known as “Thanos,” allowed his customers to design their own ransomware software, which they could then use themselves or rent out to other cybercriminals. An Iranian state-sponsored hacking group used Thanos to attack various Israeli companies, according to the DOJ.

“We allege Zagala not only created and sold ransomware products to hackers, but also trained them in their use,” Michael J. Driscoll, assistant director-in-charge of the FBI’s New York Field Office, said in an official statement. “Our actions today will prevent Zagala from further victimizing users. However, many other malicious criminals are searching for businesses and organizations that haven't taken steps to protect their systems — which is an incredibly vital step in stopping the next ransomware attack.”