Troj/Bancban-AL is a password stealing Trojan targeted at customers of certain Brazilian banks.
Troj/Bancban-AL will monitor a user's internet access. When certain internet banking sites related to Bradesco Internet Banking are visited, the Trojan will display a fake login screen in order to trick the user into inputting their details.
Troj/Bancban-AL will then send the stolen details to a Brazilian email address.
When executed Troj/Bancban-AL copies itself to the Windows folder with the filename Kernn.exe and in order ot be able to run automatically when Windows starts up sets the following registry entry:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
Laz
Kernn.exe