Typer is a .vbs DOS virus that infects anything that the user types into the user's computer.
When opening the .vbs file it starts to enter "VIRUS" rapidly, annoying the user. Its payload can be stopped by shutting down or restarting.
Typer has 7 variants:
This variant is 2,312 bytes.
This variant has a different message, and its payload is different.
HowlingWolf virus Copyright(C) 2012
This variant shows the drive of C:/ and never stops showing it, and it has a hidden string:
/\/\Your pc is infected with the Dircrazy virus/\/\/\/\/\/\Sorry.......
- Typer.Eraser (AKA Wipeout)
This variant erases all data on the computer
This variant activates on Friday the 13, and it erases all data on the computer.