Troj/Bckdr-QNV is a Trojan for the Windows platform.
When first run Troj/Bckdr-QNV copies itself to:
<Common Files>\Microsoft Shared\MSInfo\re101.exe
<Root>\re101.exe
<System>\_re101.exe
and creates the following files:
<Root>\AutoRun.inf
<Common Files>\Microsoft Shared\MSInfo\DelSvel.bat
AutoRun.inf is also detected as Troj/Bckdr-QNV, and DelSvel.bat is harmless.
The file re101.exe is registered as a new system driver service named "Microsoft Software", with a display name of "Microsoft Software10" and a startup type of automatic, so that it is started automatically during system startup. Registry entries are created under:
HKLM\SYSTEM\CurrentControlSet\Services\Microsoft Software