Troj/Raker-B is a Trojan for the Windows platform.
When first run Troj/Raker-B copies itself to <System>\msjcf.exe and may drop a randomly named component which it will then load.
Troj/Raker-B may set the following registry entry so as to auto-start:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
MSOffice32
<System>\msjcf.exe
Troj/Raker-B will attempt to inject a DLL into the explorer process.