Sophos

Troj/Proxyser-G

Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Included in our products from May 2005 (3.93)
Protection available since 24 March 2005 20:40:07 (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
sox
<filename>

and delete it if it exists.

Close the registry editor.

More Information

Troj/Proxyser-G is a Trojan that runs a SOCKS proxy server.

Troj/Proxyser-G creates the following registry entry so that it is automatically run after logon:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run
sox
<filename>

(Where <filename> is the full path to the Trojan executable.)

Troj/Proxyser-G registers itself as a service process then starts a SOCKS4 proxy server on a randomly-chosen TCP port. Anyone connecting to this port can route internet traffic through the infected machine.

Troj/Proxyser-G notifies its author of the proxy server's presence by submitting information to a preconfigured website.

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