Win32.Chonker is a typical backdoor Trojan in that it will enter a system without permission and usually under false pretenses. Often disguised as a legitimate file, users unknowingly infect their system with these pests. It will enter and then open a backdoor allowing a malicious intruder to enter, as well.
Remove at Once
For manual removal of Win32.Chonker you must kill all running processes and then remove any related files.
Manual removal, however, has its risks. The average user is usually not familiar with all that it entails. If you want a surefire method to remove Win32.Chonker, then you should try SpyZooka. SpyZooka is a trusted spyware removal system that has the backing of numerous awards and the Better Business Bureau. If you want to rid yourself of spyware permanently, try SpyZooka.