@Dragos, I think that's also part of the challenge.
Regarding 5 , that's actually troublesome . I did find exactly ( theoretically ) what I needed, but the answer is apparently incorrect, so I guess I found the specific trojan, but something's off.
Can I PM someone who solved this challenge with my answer for 5, just to get confirmation ?
6 should be easy to solve. Was too lazy yesterday to install a windows VM , but I'll try it now ( downloading Windows image :3 ) .
[EDIT] Well, it's totally doable, guys. What was once on the Internet, still lurks in the shadows, in a form or another.
Brilliant challenge Z, thumbs up.