https://gyp.blogs.balabit.com/2009/03/anon-youve-been-infctd...
I think this was my "We've made it!" moment with 4chan. When people are writing viruses tailored to your service, you've clearly done something right.
...Or wrong.
Purchase a 4chan pass to post without captchas: https://www.4chan.org/pass
You'll also be supporting the site.
That was hilarious.
I still have an archive of those files somewhere.