Mal/WaledPak-B is a family of worms for the Windows platform.

Mal/WaledPak-B includes functionality to access the internet and communicate with a remote server via HTTP.

The following registry entry is created to run Mal/WaledPak-B on startup:

HKLMSOFTWAREMicrosoftWindowsCurrentVersionRun
PromoReg
pathname of the worm executable

More information can be found at this Sophos page.