Remove A-fast Antivirus (Uninstall Guide)

  • May 3, 2010

A-fast Antivirus is a rogue anti-spyware program that pretends to protect your computer but is in reality the infection itself. When installed A-fast Antivirus will be configured to start automatically when Windows starts. Once started it will scan your computer and state that you have numerous infections, but will state it won't remove them until you first purchase the program. These scan results, though, are all fake and the files it states are infections are actually legitimate Windows programs. Therefore, do not manually delete any of the programs it states are infections as you may delete a file that is necessary for Windows to operate properly.

  • A-fast Antivirus screen shot
  • Scanning screen
  • Scan summary
  • Scan results
  • Fake Security Alert
  • Fake Security Alert #2
  • Infected program warning

While A-fast Antivirus is running it will also block numerous programs from running while stating they are infections. It does this as it does not want you to run any programs that may help you remove it. An example of one of these alerts is:

Unable to run cmd.exe
The program is infected!

While the program is running it will also show fake security alerts and warnings stating that viruses are detected or that you have privacy issues on your computer. These alerts are:

System warning!
Continue working in unprotected mode is very dangerous. Viruses can damage your confidential data and work on your computer. Click here to protect your computer.

Intercepting programs that may compromise your privacy and harm your system have been detected on your PC. It's highly recommended you scan your PC right now.

Your computer is infected! Windows detected spyware infection!
It is recommended to use special antispyware tools to prevent dataloss. Windows will now download and install the most up-to-date antispyware for you.

Critical System Warning!
Your system is probably infected with a version of Trojan-Spy.HTML.Visafraud.a. This may result in website access passwords being stolen from Internet Explorer, Mozilla Firefox, Outlook etc. Click Yes to scan and remove threats (recommended).

Like the scan results, these fake warnings are just another tactic to make you think that your computer is infected and should be ignored.

As you can see, A-fast Antivirus was developed to scare you into thinking that you have a security problem in the hopes that you will then purchase the program. It goes without saying that you should definitely not purchase this program, and if you have, you should contact your credit card company and dispute the charges. Finally, please use the guide below to remove this infection and any related malware for free.

Self Help Guide

This guide contains advanced information, but has been written in such a way so that anyone can follow it. Please ensure your data is backed up before proceeding.

If you are uncomfortable making changes to your computer or following these steps, do not worry! Instead you can get free one-on-one help by asking in the forums.
  1. Print out these instructions as we will need to close every window that is open later in the fix.

  2. Reboot your computer into Safe Mode with Networking. To do this, turn your computer off and then back on and immediately when you see anything on the screen, start tapping the F8 key on your keyboard. Eventually you will be brought to a menu similar to the one below:


    MalwareBytes Anti-Malware Screen

    Using the arrow keys on your keyboard, select Safe Mode with Networking and press Enter on your keyboard. If you are having trouble entering safe mode, then please use the following tutorial: How to start Windows in Safe Mode

    Windows will now boot into safe mode with networking and prompt you to login as a user. Please login as the same user you were previously logged in with in the normal Windows mode. Then proceed with the rest of the steps.

  3. 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:

    Malwarebytes Anti-Malware Download Link (Download page will open in a new window)

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

  5. Double-click on the icon on your desktop named mb3-setup-1878.1878-3.0.6.1469.exe. This will start the installation of MBAM onto your computer.

  6. 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.

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



    Malwarebytes Anti-Malware


    Please click on the Scan Now button to start the scan. If there is an update available for Malwarebytes it will automatically download and install it before performing the scan.

  8. 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


  9. 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.

  10. You can now exit the MBAM program.

  11. As many rogues and other malware 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 A-fast Antivirus program. If your current anti-virus solution let this infection through, you may want to consider purchasing the PRO version of Malwarebytes Anti-Malware to protect against these types of threats in the future.

View Associated A-fast Antivirus Files

%UserProfile%\Desktop\A-fast Antivirus.lnk c:\Program Files\A-fast c:\Program Files\A-fast\A-fast.exe

File Location Notes:

%UserProfile% refers to the current user's profile folder. By default, this is C:\Documents and Settings\<Current User> for Windows 2000/XP, C:\Users\<Current User> for Windows Vista/7/8, and c:\winnt\profiles\<Current User> for Windows NT.

View Associated A-fast Antivirus Registry Information

HKEY_CURRENT_USER\Software\A-fast HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System "DosableTaskMgr" = "1" HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "fast" HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List "C:\Program Files\A-fast\A-fast.exe"

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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