Sophos

Troj/Cblade-G

Aliases
  • Backdoor.IRCBot.gen
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 7 January 2005 13:26:41 (GMT)
Detected by All Sophos products

Action

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
TaskReg
<path to file>

and delete it if it exists.

Close the registry editor.

More Information

Troj/Cblade-G is a backdoor Trojan that allows an attacker unauthorised remote access to an infected machine via IRC channels.

When run Troj/Cblade-G creates the following registry entry so as to run itself on computer logon:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run
TaskReg
<path to file>

Once installed the Trojan attempts to setup an HTTP proxy server and setup an FTP server when instructed to do so by a remote attacker.

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