A previously undocumented proxy malware dubbed SystemBC is upping the stealth game by using SOCKS5 to evade detection. It s being distributed by the Fallout and RIG exploit kits (EKs), according to researchers. The Fallout EK is used to download the Danabot banking trojan and SystemBC proxy, the latter of which is then used to evade firewall detection. SystemBC has so far been found mainly in Asia, where EKs remain important attack tools thanks to Windows piracy.
Source: https://threatpost.com/systembc-proxy-malware-socks5-stealth/146879/