You may first think what is HellCode, well it's yet another skidded malware by Clxcq. This malware real name is Qwarpt (no idea what Qwarpt even mean neither how to spell). The real code is messy and junk, you'll find same declarations, unused variables etc. To release a clean version, a bit remake it.
In real and this version main issue memory leak, before you use this code (must credit), make sure you've clean memory allocations whever using a payload.
Some of payloads of his main haven't included here, it'll be dumb if I include same payloads as he've done. Included 11 payloads, fun fact (he've copy paste MBR code from a YouTube tutorial).
Use TDM-GCC either changes code and make it comfortable for MSVC.