Knowing what they were trying to do actually makes me wish I were the one they were trying to trick. I know these aren't regular lame script kiddies, but I wonder how they'd react to an attempted counter-offensive.

Give me an .exe and ask me to run it, and I'll open it in a hex editor for inspection instead. If what you claim is a "hello world" or Fibonacci generator is much bigger than I'd expect (a few KBs) and contains encrypted-looking data or other attempts at obfuscation, I'm not running it.