Bzup is a dangerous trojan designed for stealing user confidential information. The parasite continuously monitors user Internet activity and collects data the user enters on banking and financial web sites. It also steals Windows user names and passwords, e-mail account details, cached Internet passwords, MSN Explorer account information and credit card numbers. Furthermore, Bzup gathers addresses of visited web sites, computer networking information and local crypto keys. All gathered data is secretly transferred to the predetermined host or uploaded to the predefined FTP server. The trojan carries additional payload. It can delete all system and program files destroying the entire system. Bzup is able to bypass the Windows Firewall. It may cause Internet Explorer to crash. The parasite runs every time the user launches the web browser.