Sophos

Troj/Banker-DM

Aliases
  • Trojan-Spy.Win32.Banker.oi
  • PWS-Banker.gen.i
  • PWSteal.Trojan
Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Included in our products from August 2005 (3.96)
Protection available since 20 June 2005 20:13:27 (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
Windows Explorer SP2
<Windows system folder>\JavaBeans\csrss.exe

and delete it if it exists.

Close the registry editor.

More Information

Troj/Banker-DM is a multicomponent password stealing Trojan targeted at Brazilian online financial service users.

Troj/Banker-DM will monitor a user's internet access. When certain preconfigured sites are visited the Trojan will log keypresses in an attempt to steal confidential login details.

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

<Windows system folder>\JavaBeans\csrss.exe
<Windows system folder>\JavaBeans\mlsass.dll
<Windows system folder>\JavaBeans\words.vxd

where csrss.exe is the Trojan main executable, mlsass.dll is a keylogging dll and words.vxd is a log file.

The following registry entry is created to run csrss.exe on startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Windows Explorer SP2
<Windows system folder>\JavaBeans\csrss.exe

Troj/Banker-DM also attempts to terminate Norton Anti-virus.

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