Sophos

Troj/Banker-EL

Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Included in our products from September 2005 (3.97)
Protection available since 16 July 2005 14:50:44 (GMT)
Last updated 17 July 2005 08:39:09 (GMT)
Detected by All Sophos products

Action

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
Microsoft Word Profissional
<System>\Java Plug In close.exe

and delete it if it exists.

Close the registry editor.

More Information

Troj/Banker-EL is a password stealing Trojan for the Windows platform.

When Troj/Banker-EL is installed the following files are created:

<System>\Java Plug In\csrss.exe
<System>\Java Plug In\lsass.dll

where csrss.exe is the Trojan's main executable and lsass.dll is a keylogging dll.

Troj/Banker-EL monitors which URLs are visited by the web browser and creates fake web pages for certain Brazilian banking sites in order to log account information. The logged information is sent to remote users via email.

The Trojan may display a message box with the following characteristics:

Todos os arquivos foram copiados com sucesso.

The Trojan creates the following registry entry:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Microsoft Word Profissional
<System>\Java Plug In close.exe

Troj/Banker-EL also marks its presence by creating registry entry under:

HKLM\SOFTWARE\Sos\Validade\

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