Sophos

Troj/Feutel-AO

Aliases
  • Backdoor.Win32.Hupigon.lq
Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 24 November 2005 13:26:29 (GMT)
Last updated 16 January 2006 15:01:42 (GMT)
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Action

More Information

Troj/Feutel-AO is a backdoor Trojan for the Windows platform.

Troj/Feutel-AO includes functionality to access the internet and communicate with a remote server via HTTP.

When first run Troj/Feutel-AO copies itself to <Windows>\G_Server.exe and createsthe following files:
<Windows>\G_Server.DLL
<Windows>\G_ServerKey.DLL
<Windows>\G_Server_HOOk.DLL

The file G_Server.exe is registered as a new system driver service named "GrayPigeonServer", with a display name of "Gray_Pigeon_Server" and a startup type of automatic, so that it is started automatically during system startup.

Registry entries are created under:

HKLM\SYSTEM\CurrentControlSet\Services\GrayPigeonServer\

Troj/Feutel-AO changes settings for Microsoft Internet Explorer by modifying values under:

HKCU\Software\Microsoft\Internet Explorer\Main\

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