Sophos

Troj/Dloader-QI

Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Included in our products from September 2005 (3.97)
Protection available since 13 July 2005 20:27:26 (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
ASP.NET State Service
<Windows folder>\csrss.exe

and delete it if it exists.

Close the registry editor.

More Information

Troj/Dloader-QI is a downloader Trojan for the Windows platform.

Troj/Dloader-QI includes functionality to access the internet and communicate with a remote server via HTTP. The Trojan tries to download from a predefined URL. The URL does not exist at the time of writing.

When first run Troj/Dloader-QI copies itself to <Windows folder>\csrss.exe.

The following registry entry is created to run csrss.exe on startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
ASP.NET State Service
<Windows folder>\csrss.exe

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