Trojan:W32/Tinba is usually distributed through malvertising (advertising content that leads the user to sites hosting malicious threats), exploit kits and spam email campaigns. According to news reports, Tinba has been found targeting bank customers in the United States and Europe.
If Tinba successfully infects a device, it can steal banking and personal information through webinjects. To do this, the malware monitors the user's browser activity and if specific banking portals are visited, Tinba injects code to present the victim with fake web forms designed to mimic the legitimate web site. The malware then tricks them into entering their personal information, log-in credentials, etc in the legitimate-looking page.
Tinba may also display socially-engineered messages to lure or pressure the user into entering their information on the fake page; for example, a message may be shown which attempts to convince the victim that funds were accidentally deposited to his account and must be refunded immediately.
For more information about how Tinba, see: