Troj/Pushu-Gen is a family of Trojans for the Windows platform.

When members of Troj/Pushu-Gen are installed one of the following files is usually created:

Windows\system32\drivers\ip6fw.sys
Windows\system32\drivers\netdtect.sys
Windows\system32\drivers\secdrv.sys

These files may be registered as a new system driver service named for example "Restore", "Ip6Fw", "NetDetect" or "Secdrv". Registry entries are created under:

HKLM\SYSTEM\CurrentControlSet\Services\

When members of Troj/Pushu-Gen are installed the following file is also usually created:

Windows\system32\drivers\runtime.sys

More information can be found at this Sophos page.