high
Summary
Summary
Action- More Information
| Affected operating systems | Windows |
|---|---|
| Characteristics |
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| Protection available since | 18 January 2005 13:41:02 (GMT) |
| Detected by | All Sophos products |
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Action
- Summary
- Action
- More Information
Please follow the instructions for removing Trojans.
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
.service
%SYSTEM%\winlgon.exe
and delete it if it exists.
Close the registry editor.
More Information
Troj/Bdoor-BX is a Trojan for the Windows platform that contains backdoor functions that allow unauthorised remote access to the infected computer via IRC channels.
When run Troj/Bdoor-BX copies itself to the Windows system folder as WINLGON.EXE and creates the following registry so as to run itself automatically on computer logon:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run
.service
%SYSTEM%\winlgon.exe
Once installed, Troj/Bdoor-BX will connect to an IRC server and listen for backdoor commands.
The Trojan has the capability to download and run files from the internet and setup more listening ports when instructed to do so by a remote attacker.
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