Remove Antivirus System Pro (Uninstall Guide)

  • June 5, 2009
  • 08:54 AM
  • Read 671,314 times

What is Antivirus System Pro?

Skip this and learn how to remove Antivirus System Pro!

Antivirus System Pro is a rogue anti-spyware that uses false scan results, fake security alerts, and Internet Explorer hijacking in order to have you purchase this program. It is because of these actions that we classify Antivirus System Pro as a rogue anti-spyware program. When installed, Antivirus System pro will be configured to start automatically when you log into Windows. Once running it will scan your computer and display numerous infections that do not actually exist. Furthermore, it will state it will not remove these infections unless you first purchase the program. This method of stating there are infections, but not removing it until you purchase it, is just another tactic to have you purchase the software.

  • Antivirus System Pro screen shot
  • Scanning screen
  • Infiltration Alert
  • Internet Explorer Hijacked by Antivirus System Pro
  • Spyware Alert
  • Windows Security Alert

While running, you will also be constantly barraged with fake security alerts stating that your computer is under attack or that you have viruses on your computer. For example, one alert is labeled Infiltration Alert and it states that your computer is being attacked by an Internet Virus. Another alert prompts you to scan your computer and when you click on it, will automatically launch Antivirus System Pro and then prompt you to purchase it. The text of this alert is:

Windows Security alert
Windows reports that computer is infected. Antivirus software helps to protect your computer against viruses and other security threats. Click here for the scan you computer. Your system might be at risk now.

Last, but not least, Antivirus System Pro will install a Internet Explorer Browser Helper Object that will hijack Internet Explorer so that when you are browsing web sites, instead of going to the page you want, you will be shown a warning message. This warning message will state that the site you are going to is harmful to your computer and that you should purchase Antivirus System Pro to protect yourself.

As you can see, this program utilizes many tactics to make you think you are infected and thus tricking you into purchase the program. Please do not purchase this program as it will not protect your computer in any way. Instead, use the guide below to remove this infection and any related malware for free.

Self Help Guide

This guide is intended for advanced computer users only. Please ensure your data is backed up before proceeding. If you are uncomfortable making changes to your computer or following these stpes, do not worry! Instead you can get free one-on-one help by asking in the forums.
1

This removal guide may appear overwhelming due to the amount of the steps and numerous programs that will be used. It was only written this way to provide clear, detailed, and easy to understand instructions that anyone can use to remove this infection for free. Before using this guide, we suggest that you read it once and download all necessary tools to your desktop. After doing so, please print this page as you may need to close your browser window or reboot your computer.

2

Reboot your computer into Safe Mode with Networking using the instructions for your version of Windows found in the following tutorial:

How to start Windows in Safe Mode

When following the steps in the above tutorial, select Safe Mode with Networking rather than just Safe Mode. When the computer reboots into Safe Mode with Networking make sure you login with the username you normally use. When you are at your Windows desktop, please continue with the rest of the steps.

3

This infection changes your Windows settings to use a proxy server that will not allow you to browse any pages on the Internet with Internet Explorer or update security software. Regardless of the web browser you use, for these instructions we will first need need to fix this problem so that we can download the utilities we need to remove this infection.

Please start Internet Explorer, and when the program is open, click on the Tools menu and then select Internet Options as shown in the image below.

Internet Explorer Tools Menu

4

You should now be in the Internet Options screen as shown in the image below.

Internet Options screen

Now click on the Connections tab as designated by the blue arrow above.

5

You will now be at the Connections tab as shown by the image below.

Internet Options connections tab

Now click on the Lan Settings button as designated by the blue arrow above.

6

You will now be at the Local Area Network (LAN) settings screen as shown by the image below.

Proxy Settings screen

Under the Proxy Server section, please uncheck the checkbox labeled Use a proxy server for your LAN. Then press the OK button to close this screen. Then press the OK button to close the Internet Options screen. Now that you have disabled the proxy server you will be able to browse the web again with Internet Explorer.

7

To terminate any programs that may interfere with the removal process we must first download the Rkill program. Rkill will search your computer for active malware infections and attempt to terminate them so that they wont interfere with the removal process. To do this, please download RKill to your desktop from the following link.

img
Rkill

When at the download page, click on the Download Now button labeled iExplore.exe. When you are prompted where to save it, please save it on your desktop.

8

Once it is downloaded, double-click on the iExplore.exe icon in order to automatically attempt to stop any processes associated with Antivirus System Pro and other malware. Please be patient while the program looks for various malware programs and ends them. When it has finished, the black window will automatically close and a log file will open. Please review the log file and then close so you can continue with the next step. If you have problems running RKill, you can download the other renamed versions of RKill from the rkill download page. All of the files are renamed copies of RKill, which you can try instead. Please note that the download page will open in a new browser window or tab.

Do not reboot your computer after running RKill as the malware programs will start again.

9

At this point you should download Malwarebytes Anti-Malware, or MBAM, to scan your computer for any any infections or adware that may be present. Please download Malwarebytes from the following location and save it to your desktop:

img
Malwarebytes Anti-Malware
10

Once downloaded, close all programs and Windows on your computer, including this one.

11

Double-click on the icon on your desktop named mbam-setup-bc.1878-2.2.1.1043.exe. This will start the installation of MBAM onto your computer.

12

When the installation begins, keep following the prompts in order to continue with the installation process. Do not make any changes to default settings and when the program has finished installing, make sure you leave Launch Malwarebytes Anti-Malware checked. Then click on the Finish button. If MalwareBytes prompts you to reboot, please do not do so.

13

MBAM will now start and you will be at the main screen as shown below.

Malwarebytes Anti-Malware

We now need to enable rootkit scanning to detect the largest amount of malware that is possible with MalwareBytes. To do this, click on the Settings section at the top of the MalwareBytes application and you wil be brought to the general settings section.

Now click on the Detection and Protection settings category on the left sidebar. You will now be shown the settings MalwareBytes will use when scanning your computer.

Malwarebytes Anti-Malware Detection and Protection Settings Page

At this screen, please put a checkmark in the option labaled Scan for rootkits. If you do not see this option, please make sure you are using the latest version of MalwareBytes.

14

Now that you have enabled rootkit scanning, click on the Scan button to go to the scan screen.

Malwarebytes Anti-Malware Scan Screen

Make sure Threat ScanStart Scan button. If there is an update available for Malwarebytes it will automatically download and install it before performing the scan.

15

MBAM will now start scanning your computer for malware. This process can take quite a while, so we suggest you do something else and periodically check on the status of the scan to see when it is finished.

Malwarebytes Anti-Malware

16

When MBAM is finished scanning it will display a screen that displays any malware that it has detected. Please note that the infections found may be different than what is shown in the image below due to the guide being updated for newer versions of MBAM.

MalwareBytes Scan Results

You should now click on the Remove Selected button to remove all the seleted malware. MBAM will now delete all of the files and registry keys and add them to the programs quarantine. When removing the files, MBAM may require a reboot in order to remove some of them. If it displays a message stating that it needs to reboot, please allow it to do so. Once your computer has rebooted, and you are logged in, please continue with the rest of the steps.

17

You can now exit the MBAM program.

18

If your computer is still in Safe Mode with Networking, you can reboot your computer back to normal mode. Once your computer is rebooted and you are back at the desktop, you can proceed with the rest of the instructions.

19

As many malware and unwanted programs are installed through vulnerabilities found in out-dated and insecure programs, it is strongly suggested that you use Secunia PSI to scan for vulnerable programs on your computer. A tutorial on how to use Secunia PSI to scan for vulnerable programs can be found here:

How to detect vulnerable and out-dated programs using Secunia Personal Software Inspector

 

Your computer should now be free of the Antivirus System Pro program. If your current security solution allowed this program on your computer, you may want to consider purchasing the full-featured version of Malwarebytes Anti-Malware to protect against these types of threats in the future.

If you are still having problems with your computer after completing these instructions, then please follow the steps outlined in the topic link ed below:

Preparation Guide For Use Before Using Malware Removal Tools and Requesting Help
img

Malwarebytes Anti-Malware

Purchase the full-featured version of Malwarebytes Anti-Malware, which includes real-time protection, scheduled scanning, and website filtering, to protect yourself against these types of threats in the future!

View Associated Antivirus System Pro Files

c:\WINDOWS\sysguard.exe c:\WINDOWS\system32\iehelper.dll C:\Documents and Settings\<UserProfile>\<random characters>\<4 random chars>sysguard.exe

View Associated Antivirus System Pro Registry Information

HKEY_CURRENT_USER\Software\AvScan HKEY_CLASSES_ROOT\CLSID\{BAD4551D-9B24-42cb-9BCD-818CA2DA7B63} HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{BAD4551D-9B24-42cb-9BCD-818CA2DA7B63} HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "system tool" HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "<random characters>"

This is a self-help guide. Use at your own risk.

BleepingComputer.com can not be held responsible for problems that may occur by using this information. If you would like help with any of these fixes, you can ask for malware removal assistance in our Virus,Trojan,Spyware, and Malware Removal Logs forum.

If you have any questions about this self-help guide then please post those questions in our Am I infected? What do I do? and someone will help you.

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