UPAS Kit and Kronos At around this time, the original malware forums had been closed, and Hutchins transferred to another hacker community, HackForums. In this new forum, members were expected to show more skill by demonstrating possession of a
botnet. Hutchins, 15 years old at the time, successfully created an 8,000-computer botnet for HackForums by tricking
BitTorrent users into running his fake files to take control of their machines. as Hutchins had been able to plead to the hacker behind it, once he had tracked him down, with his own experiences to convince him to stop the botnet. Hutchins had become aware of WannaCry the afternoon of 12 May, and though he had been on vacation, he began reverse engineering the code from his bedroom. He discovered that the malware was tied to an odd-looking
domain name, suggesting the malware would be part of a command-and-control structure common to botnets, but to his surprise, the domain name was not registered. He quickly registered the domain and set up servers at Kryptos Logic within it to act as
honeypots, allowing them to track the infected computers. While the WannaCry worm continued to spread over the next few hours, security researchers found that because Hutchins had registered the domain name when he did, WannaCry would not execute further; the domain was effectively the worm's
killswitch. Hutchins and Kryptos, along with the UK's
National Cyber Security Centre, spent the next several days maintaining the honeypot servers from additional DDoS attacks, some restarted by ongoing Mirai botnets as to make sure the killswitch remained active while Microsoft and other security workers rushed to patch the exploit in the Server Message Block and issue it to end users. A separate effort from French cybersecurity researchers found a method to unlock and decrypt affected computers without having to pay the ransom. Hutchins' work, as MalwareTech, to stop WannaCry, was highly praised, but this led to the press identifying Hutchins as the person behind MalwareTech in the days that followed. Hutchins tried to avoid the press including the more invasive tabloids who had published his name and address tied to the MalwareTech name, though did agree to a single
Associated Press interview under his real name, trying to defuse the "hero" perception he had been given. In this coverage, he kept his past history quiet, simply stating that he got his job with Kryptos Logic based on his software skills and MalwareTech blog hobbies he developed during school. He gained a type of a celebrity status within the cybersecurity world for his actions against WannaCry, and plans were made for him to attend the 2017
DEF CON cybersecurity conference in
Las Vegas that August. ==Arrest==