|THAT sounds like a virus to me. Google turns nothing up for xeoum.scr, but there is a hit for keoum.scr, malware:|
If you don't have antivirus, get some. Free ones: AVAST!, AVG, PCTools, AVIRA.
Also scan with secondary Antimalware tools like Emsisoft Antimalware, MalwareBytes, Spybot Search & Destroy, Super AntiSpyware.
Also scan with anti root kit tools like, GMER, Radix, RootkitRevealer, ComboFix etc.
MOOOOooove! OH and you're welcome!