Sophos

Troj/Banker-S

Category
Type
What to do
Prevalence low high

Summary

 
Protection available since 23 April 2004 14:50:49 (GMT)
Detected by All Sophos products
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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\load32

and delete it if it exists.

Close the registry editor.

Editing Win.ini

At the taskbar, click Start|Run and type Sysedit. Bring Win.ini to the front. In the [windows] section, search for a line beginning with 'Run=' and delete any references to the files you removed. Delete only that reference, not any other text.

Editing System.ini

At the taskbar, click Start|Run and type Sysedit. Bring System.ini to the front. In the 'shell=' line in the [Boot] section, search for any references to the files you deleted. Delete only that reference, not any other text.

Reboot your computer.

More Information

Troj/Banker-S is a password stealing Trojan that attempts to capture keylogs
associated with web browsing.

Troj/Banker-S creates the following files which are all detected by this
identity:

<Windows>\dllreg.exe
<Windows>\sock64.dll
<StartUp>\rundllw.exe
<Windows System>\load32.exe
<Windows System>\vxdmgr32.exe

In order to run on system restart Troj/Banker-S creates the following
registry entry:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\load32

Troj/Banker-S adds the name of one of the copies of itself to the Run= line of
win.ini and the shell= line of system.ini.

Troj/Banker-S uses it's own SMTP engine to send results of the keylogger to a
russian email address.

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