Microsoft teams are investigating a report of a security issue known as Download.Ject affecting customers using Microsoft Internet Information Services 5.0 (IIS) and Microsoft Internet Explorer, components of Windows. (Download.Ject is also known as: JS.Scob.Trojan, Scob, and JS.Toofeer.)

Important
Customers who have deployed Windows XP Service Pack 2 RC2 are not at risk.

Reports indicate that Web servers running Windows 2000 Server and IIS that have not applied update 835732, which was addressed by Microsoft Security Bulletin MS04-011, are possibly being compromised and being used to attempt to infect users of Internet Explorer with malicious code.


How to Help Protect Your Systems

• * System administrators. System administrators should follow the steps outlined in Knowledge Base Article 871277 to apply update 835732 and take any recovery steps that may be necessary.
  
  * Enterprise customers. Enterprise customers can minimize risk by increasing the security of the Local Machine Zone in Internet Explorer.
  
  * Home users. Use the following steps to update your computer, remove any infection, and increase your browsing and e-mail safety settings.

Actions for Home Users


1. Install Critical Updates

Visit the Windows Update Web site to install all critical updates.

2. Check for Infection

To determine if the malicious code is on your computer, search for the following files:

Kk32.dll
Surf.dat

Steps for Windows XP users:

On the taskbar at the bottom of your screen, click Start, and then click Search.
Under What do you want to search for? click All files and folders.

Under All or part of the file name:
type: Kk32.dll
and then click the Search button.

Under All or part of the file name:
type: Surf.dat
and then click the Search button.


If either of these files is present, your computer may be infected. You can find tools to clean your computer and obtain up-to-date antivirus protection from the following software vendors participating in the Microsoft Virus Information Alliance:

Symantec
F-Secure
Computer Associates


3. Increase Your Browsing and E-Mail Safety

Follow the steps outlined on the page to Increase Your Browsing and E-Mail Safety.


source:
http://www.microsoft.com/security/in...load_ject.mspx