Maybe you've heard about Win32/Induc virus. It's a unique beast because it does infect only Borland Delphi integrated development environments. To the best of my knowledge, only Delphi 4 to 7 are affected.

And here's the catch: Hellcore Mailer (among other my applications) is written in Borland Delphi 3 (three), which - so far - is NOT VULNERABLE.

Additionally, staging machine is protected by HIPS system built in Comodo Personal Firewall, which would easily fend off such threats. So there's really nothing to worry about.