Sophos

Troj/Ranck-BK

Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Included in our products from February 2005 (3.90)
Protection available since 15 December 2004 08:47:24 (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\Bmsnwss

and remove any reference to any file you deleted.

Close the registry editor.

More Information

Troj/Ranck-BK is a proxy Trojan that allows a remote intruder to route HTTP traffic through the computer.

Troj/Ranck-BK sets an entry in the registry at the following location so as to run itself on computer startup:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\Bmsnwss

Troj/Ranck-BK sends information that the infected computer is running to a number of websites.

Troj/Ranck-BK runs continuously in the background listening on a port.

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