Your computer remains infected by viruses

7 January 2010 Popup 2 Comments

“Your computer remains infected by viruses!” is a pop-up warning coming from a fake security web site that contains malicious script called JS.SecurityToolFraud.B.

JS.SecurityToolFraud.B is a harmful Java Script file that can be downloaded from fraud web site. This script is intended to spread and promote a number of rogue security programs. To be able to entice users into downloading the malicious Java Script file, the web site will mimic Windows Explorer interface and pretend as if it is scanning local drives for viruses. Then, it detects numerous Trojans on each drives and folders. Finally, the web site prompts to download the script.

Screen Shot Image:

Technical Details and Additional Information:

Damage Level: Medium

Systems Affected: Linux, Solaris, Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows Vista, Windows XP

Malware Behavior
After a fake virus scan performed on the computer, this false warning will appear to lure victims into downloading another malicious component that is essential in propagating the rogue program. The fake alert will contain this message:

Microsoft Internet Explorer
Your computer remains infected by viruses! They can cause data loss and file damages and need to be cured as soon as possible. Return to System Security and download it secure to your PC.

1. Temporarily Disable System Restore (Windows Me/XP). [how to]
2. Open your antivirus application and update the virus definition file. This method ensures that your antivirus program can detect even newer variants of "Your computer remains infected by viruses"

3. Start Windows in Safe Mode with Networking.
- From a power-off state, turn on the computer and press F8 on your keyboard repeatedly.
- Your computer will display Windows Advanced Boot Options menu. Please select Safe Mode with Networking.
- The system will now boot Windows and loads only necessary drivers and files.

4. Open your antivirus program and run a full system scan. After the scan, delete all infected items. If unable, better place them in quarantine. Once the scan is complete, please proceed with the next step.

Online Virus Scanner:

Another way to remove "Your computer remains infected by viruses" without the need to install additional antivirus application is to perform a thorough scan with free online virus scanner that can be found here or on websites of legitimate anti-virus and security provider.

5. Go to Online Virus Scanner list and run a virus scan. This may require plug-ins, add-on or Activex object, please install if you want to proceed with scan.
6. After completing the necessary download, your system is now ready for online virus scanning.
7. Select an option in which you can thoroughly scan the computer to make sure that it will find and delete entirely all infections not detected on previous scan.
8. Remove or delete all detected items.
9. When scanning is finished you may now restart the computer in normal mode.

Automatic Removal of "Your computer remains infected by viruses"

In order to completely remove the threat, click here to download and run Malwarebytes Anti-Malware. Sometimes, Trojans will block the downloading and installation of MBAM. If this happens, download it from a clean computer and rename the executable file before executing on the infected machine.