I have an infection on a computer at my work, I got it scanned with an OUTSIDE source, and it was called Backdoor.Beastdoor.205, I can not find any information on this virus, or any effective removal methods.

as a VERY last resort I will do a format, but I do not want to come to that as of the data on the computer and no way to back it up.

any help would be appreciated, thank you.