When the file is executed, it plays a sound byte that seems to say "Shut up". After the sound finishes playing, the system shuts down. The trojan has also managed to add itself to run on startup by adding itself to the registry. Whenever the desktop loads, the trojan runs, and plays the same sound byte, and then shut down the computer after it is done, very similar to Duksten.
To remove Annoyer, restart the computer in safe mode (ignoring Registry Key-startups) and remove the program/key with a program such as Combofix, or Malwarebytes.