Troj/Dedler-C is a downloader Trojan.
Upon execution the Trojan tries to download executable files from a remote location and run them.
When first run Troj/Dedler-C copies itself to the Windows system folder as smvss.exe and adds its pathname to one of the following new registry entries to
run smvss.exe automatically on startup:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\ActiveXUpdate
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\MicrosoftOEM
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\SoundControl
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\OfficeGuardUI