W32/Sdbot-DEN is a worm for the Windows platform.
When first run W32/Sdbot-DEN copies itself to <System>\AutomaticUpdates.exe.
The following registry entries are created to run AutomaticUpdates.exe on startup:
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
388529725448
AutomaticUpdates.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
388529725448
AutomaticUpdates.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
388529725448
AutomaticUpdates.exe
Once running, W32/Sdbot-DEN attempts to connect to a remote server to await commands from the intruder.