When first run Troj/DNSChan-MK copies itself to <System>\dmnds.exe.
The file dmnds.exe is registered as a new system driver service named "Windows Management Service", with a display name of "Windows Management Service" and a startup type of automatic, so that it is started automatically during system startup. Registry entries are created under:
HKLM\SYSTEM\CurrentControlSet\Services\Windows Management Service