Troj/Dloadr-BFS is a Trojan for the Windows platform.
Troj/Dloadr-BFS attempts to download code from the internet.
Troj/Dloadr-BFS creates the file <Windows>\system32\xpdx.sys. This file is detected as Mal/RKRustok-A.
Troj/Dloadr-BFS creates registry entries under:
HKLM\SYSTEM\CurrentControlSet\Services\xpdx\
These entries set the xpdx.sys rootkit to load as a service.