I did a simple google to find this .
This is the Backdoor:W32/Hupigon Family Description.
Hupigon variants are backdoor programs, which provide an attacker with access to, and control of, an infected machine. There are a large number of variants in the Hupigon family.
The backdoor's file is a PE executable. The file may be packed with UPX. Unpacked, the code size is 710kB. It is very rare for a Hupigon variant to be smaller than 299kB.
Hupigons are written with Borland Delphi.
So it is not a keylogger as such.
Hupigon variants have several different types of features. The following list is an example of some:
• It allows others to access the computer
• Allows for recording with the user's webcam
• Can make the user's computer to attack various servers
• Send victim's computer messages
• Has rootkit functionality so it has a stealth component that hides files
• Create logs from keystrokes, steals passwords, and sends this information to remote servers
and the really relevant part of the info.
Hupigon doesn't have any automatic mechanisms to spread itself. It must be sent by its author via e-mail, through a website, or even via Instant Messengers (IM) such as Yahoo, MSN, ICQ, and Skype.
I found info here. http://www.f-secure.com/v-descs/backdoor_w32_hupigon.shtml
Seems to be a removal tool here but cannot tell as i use a mac. http://www.2-spyware.com/remove-backdoor-win32-hupigon.html
Good luck on sorting it out.