Troj/Bancos-BA

Please follow the instructions for removing Trojans.

Change any data that may have become compromised.

You should also check your Internet Explorer settings using Tools|Internet options|General for any modifications made by the Trojan.

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
NavProtect32
<path to Trojan>

and delete it if it exists.

Close the registry editor.

Troj/Bancos-BA is a password-stealing Trojan that targets banking websites.

Troj/Bancos-BA will monitor a user's internet access. When certain banking websites are accessed, Troj/Bancos-BA will log user activity and send the stolen details out to a Brazilian email address. In particular, the following case-insensitive banking related strings are searched for in Window title bars:

BamerIndus, bancodobrasil, Banespa, Bank, banknet, Bradesco, CAIXA, CEF,
Certificado, gerenciadorfinanceiro, HSBC, Itau, Logon, NossaCaixa, Real,
Senha, SERASA, TecladoVirtual, Vendas de Automoveis

The stolen information is stored in the "%SYSTEM%\config\cap" folder.

Troj/Bancos-BA will display one of the following fake error messages:

Reinstale ou Atualize o Acrobat Reader
"NTDLL.DLL" nao foi localizada
Estouro de memoria Kernel32.dll
Incompativel com essa versao do Windows

When first run, Troj/Bancos-BA will copy itself to the Windows system folder. In order to run automatically each time a user logs on, Troj/Bancos-BA will set the following registry entry:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run
NavProtect32
<path to Trojan>

Troj/Bancos-BA will also set the following registry entries:

HKCU\Software\Microsoft\Internet Explorer\Main
Use FormSuggest
no

HKCU\Software\Microsoft\Internet Explorer\Main
FormSuggest Passwords
no

Troj/Bancos-BA will drop a keylogging application DLL named HDLL.DLL to the Windows system folder. A copy may exist named HDLL32.DLL in the user's Temporary folder. These files can be safely deleted after removing the Trojan.

Troj/Bancos-BA will attempt to terminate a number of security and anti-virus related processes.