to unlock files . `` Minamitsu 'The Captain ' Murasa encrypted your precious data like documents , musics [ sic ] , pictures , and some kinda project files , '' a pop-up from the malware , called Resenware , reads . Research focused Twitter account MalwareHunterTeam tweeted screenshots of Resenware on Thursday . Victims allegedly have to obtain a certain high score on Undefined Fantastic Object—a classic style , Japanese vertical shooter—on LUNATIC difficulty . Resenware 's pop-up claims the malware will detect someone playing Undefined Fantastic Object and their score automatically . MalwareHunterTeam confirmed in a Twitter direct message to Motherboard that the malware does indeed check that the game is running . But if someone did get infected by Resenware , they may want to quickly grab a copy—one Amazon listing only has three copies of Undefined Fantastic Object in stock . `` Shmup enthusiasts who hunger for something new being brought to the table in terms of gameplay mechanics will be disappointed , but those enthusiasts seeking a challenge sure wo n't be ! '' a very enthusiastic fan wrote about a demo version of the game back in 2009 . A YouTube clip allegedly shows someone playing a stage of the game on LUNATIC difficulty , and , well , it gets pretty intense . `` DO NO TRY CHEATING OR TERMINATE THIS APPLICATION IF YOU DO N'T WANT TO BLOW UP THE ENCRYPTION KEY , '' the pop-up continues . According to MalwareHunterTeam , there are no consequences from editing your score from within the game , a flaw that prompted the Resenware author to release a tool to remove the malware , along with an apology . `` Ransomeware [ sic ] is defentely kind of highly fatal malware , but I made it , '' the creator wrote , according to a screenshot posted by MalwareHunterTeam