Sophos

Troj/StartPg-BG

Aliases
  • Trojan.Win32.StartPage.bg
Category
Type
What to do
Prevalence low high

Summary

 
Included in our products from February 2004 (3.78)
Protection available since 5 January 2004 15:04:09 (GMT)
Detected by All Sophos products

Action

Please follow the instructions for removing Trojans.

You should also change your Internet Explorer settings using Tools|Internet options|General to remove any modifications made by the Trojan.

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\
Control\= rundll32.exe <Windows>\SYSTEM\CTRLPAN.DLL,Restore ControlPanel

and delete it if it exists.

Close the registry editor.

More Information

Troj/StartPg-BG sets the home page of Internet Explorer to http://aifind.cc/ by modifying the following registry entries:

HKCU\Software\Microsoft\Internet Explorer\Main\Search Bar
HKCU\Software\Microsoft\Internet Explorer\SearchURL

Troj/StartPg-BG also creates a stylesheet that can be used to redirect the user to adult related sites by creating a stylesheet in the <Windows> folder called HH.HTT and by setting the following registry entries:

HKCU\Software\Microsoft\Internet Explorer\Styles\
Use My Stylesheet\ = 1

HKCU\Software\Microsoft\Internet Explorer\Styles\
User Stylesheet\ = <location of stylesheet>

The stylesheet is detected as Troj/StartPg-BG.

Troj/StartPg-BG also copies itself to the <Windows> folder as CTRLPAN.DLL and creates the following registry entry to run on system restart:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
Control\= rundll32.exe <Windows>\SYSTEM\CTRLPAN.DLL,Restore ControlPanel

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