Joke.Win.Aloap is not a trojan (altough some programs report it as such) but a joke program.
After being run it starts to shake current and all further opened application windows. This works under all versions of MS Windows.
To deactivate the joke you should open Task Manager and kill 'Aloap Window' process.
Allow F-Secure Anti-Virus to disinfect the relevant files.
For more general information on disinfection, please see Removal Instructions.
Description Created: Analysis: Alexey Podrezov; F-Secure