Troj/Bancos-LN

Please follow the instructions for removing Trojans.

Change any data that may have become compromised.

Windows NT/2000/XP/2003

In Windows NT/2000/XP/2003 you will also need to edit the following registry entry. The removal of this entry is optional in Windows 95/98/Me. Please read the warning about editing the registry.

At the taskbar, click Start|Run. Type 'Regedit' and press Return. The registry editor opens.

Before you edit the registry, you should make a backup. On the 'Registry' menu, click 'Export Registry File'. In the 'Export range' panel, click 'All', then save your registry as Backup.

Locate the HKEY_LOCAL_MACHINE entry:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run
Laz
%WINDOWS%\Kernn.exe

and delete it if it exists.

Close the registry editor.

Troj/Bancos-LN is a password stealing Trojan aimed at customers of Brazilian banks.

Troj/Bancos-LN will monitor a user's internet access. When certain internet banking sites are visited, the Trojan will display a fake login screen in order to trick the user into inputting their details. In particular, the following domains are targeted:

http://internetcaixa.caixa.gov.br
http://www.bancoreal.com.br
http://www.banespa.com.br
http://www.bradesco.com.br
http://www.caixa.com.br
http://www.santander.com.br
https://www.realsecureweb.com.br

Troj/Bancos-LN will then send the stolen details to a Brazilian email address.

When first run, Troj/Bancos-LN will copy itself to the Windows folder as KERNN.EXE. In order to run automatically each time a user logs in, Troj/Bancos-LN will set the following registry entry:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run
Laz
%WINDOWS%\Kernn.exe

When triggered by visits to banking web sites, Troj/Bancos-LN will download a number of banking related images and SWF files to folders named BINM, CINM, RINM, BANESINM, SANINM in the Windows folder.