Troj/Bckdr-QMS is a backdoor Trojan which allows a remote intruder to gain access and control over the computer.
When first run Troj/Bckdr-QMS copies itself to <System>\wcbi.exe and creates the file <System>\iaxcfg32.dll, which is a data file and can be safely deleted.
The following registry entry is created to run wcbi.exe on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
MSMSGNER
<System>\wcbi.exe