The bot behaves like malware as it does not respect robots.txt and it tries to register spam users and post spam to the forum. It behaves a bit like the Russian malware xrumer/xevil so this could be yet another clueless script kiddie who has just learned to spoof user-agent string, or the malware developer trying desperately to figure out new ways circumvent forum anti-spam measures.
As a result, I will remove the legitimate bot status from HappyWing meaning that Web Server connections will be automatically cut whenever it tries attack again. Gotta love the idiots like Aleksandr Ryanchenko/Александр Рябченко who make their living by developing malware for spammers.