Japanese multinational conglomerate Fujifilm has been forced to shut down parts of its global network after falling victim to a suspected ransomware attack.

“Fujifilm Corporation is currently carrying out an investigation into possible unauthorized access to its server from outside of the company. As part of this investigation, the network is partially shut down and disconnected from external correspondence,”

The company’s servers have been infected by Qbot the 13-year-old Trojan, typically initiated by phishing. Also known as QakBot or QuakBot, have a long history of partnering with ransomware operators. It previously worked with the ProLock and Egregor ransomware gangs, but is currently said to be linked with the notorious REvil group.

Initial forensic analysis suggests that the ransomware attack on Fujifilm started with a Qbot trojan infection last month, which gave hackers a foothold in the company’s systems with which to deliver the secondary ransomware payload. Most recently, the Qbot trojan has been actively exploited by the REvil hacking collective, and it seems highly plausible that the Russian-based hackers are behind this cyberattack.”

It’s unclear whether Fujifilm has paid any ransom to the hackers responsible for the attack on its systems.