This isn't a project, but a script for the ics command in @joecooldoo 's MS-DOS simulator.
You can get it here.
What this does:
In MS-DOS Simulator, typing virus will pull-up joecooldoo's "mommy virus", and there is no way out.
But with this, just pressing enter will save you! (but it does delete all your files so, does it really?)
Edit: I think @pajamaclaws21 made a better one...
Ooh, nice!
Wow, sorry I joined last week so..