Remove Windows Activity Booster (Removal Guide)

Windows Activity Booster is a computer virus, which masquerades as genuine security software, while actually reporting non-existent malware threats in order to scare the user into paying for this rogue security software.

What is Windows Activity Booster?

Windows Activity Booster is a rogue anti-virus program from the Rogue.FakeVimes family of computer infections. This program is classified as a rogue because it pretends to be an anti-virus program, but will instead displays bogus scan results, report non-existing computer infections, and does not allow you to run your normal applications.
In this case, not only is Windows Activity Booster going to disrupt your system, it’s going to try and trick you into making a purchase using your credit card.
Windows Activity Booster appears in the form of a fake Windows warning on your computer system that reads you have a specific number of viruses on your computer (usually in the hundreds) and that this software has detected those viruses. To get rid of them you must purchase the full-version of Windows Activity Booster. It’s important to remember that by purchasing the “claimed full version to remove the viruses” you will be submitting your personal information to unscrupulous persons and may also end up being a victim of credit card or identity fraud or theft.

How did Windows Activity Booster virus got on my computer?

Windows Activity Booster is distributed through several means. Malicious websites, or legitimate websites that have been hacked, can infect your machine through exploit kits that use vulnerabilities on your computer to install this rogue antivirus without your permission.
Another method used to propagate Windows Activity Booster is spam email containing infected attachments or links to malicious websites. Cyber-criminals spam out an email, with forged header information, tricking you into believing that it is from a shipping company like DHL or FedEx. The email tells you that they tried to deliver a package to you, but failed for some reason. Sometimes the emails claim to be notifications of a shipment you have made. Either way, you can’t resist being curious as to what the email is referring to – and open the attached file (or click on a link embedded inside the email). And with that, your computer is infected with the Windows Activity Booster virus.
The threat may also be downloaded manually by tricking the user into thinking they are installing a useful piece of software, for instance a bogus update for Adobe Flash Player or another piece of software.
The Windows Activity Booster infection is also prevalent on peer-to-peer file sharing websites and is often packaged with pirated or illegally acquired software.

Am I infected with Windows Activity Booster virus?

Some examples of the interface, fake alerts, fake scanning results, and pop-ups displayed by Windows Activity Booster are shown below:

The Windows Activity Booster rogue antivirus is a scam, and you should ignore any alerts that this malicious software might generate.
Under no circumstance should you purchase a Windows Activity Booster license, and if you have, you can should contact your bank and request a refund, stating that you are the victim of a computer virus and a scam.

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How to remove Windows Activity Booster virus (Removal Guide)

This page is a comprehensive guide, which will remove the Windows Activity Booster infection from your your computer. Please perform all the steps in the correct order. If you have any questions or doubt at any point, STOP and ask for our assistance.
STEP 1: Start your computer in Safe Mode with Networking
STEP 2: Run RKill to terminate Windows Activity Booster malicious processes
STEP 3: Remove Windows Activity Booster virus with Malwarebytes Anti-Malware Free
STEP 4: Remove Windows Activity Booster rootkit with RogueKiller
STEP 5:  Remove Windows Activity Booster infection with HitmanPro

STEP 1 : Start your computer in Safe Mode with Networking

1. Remove all floppy disks, CDs, and DVDs from your computer, and then restart your computer.
2. When the computer starts you will see your computer’s hardware being listed. When you see this information start to gently tap the F8 key repeatedly until you are presented with the Windows XP, Vista or 7 Advanced Boot Options.
   
   If you are using Windows 8, press the Windows key + C, and then click Settings. Click Power, hold down Shift on your keyboard and click Restart, then click on Troubleshoot and select Advanced options. In the Advanced Options screen, select Startup Settings, then click on Restart.
3. If you are using Windows XP, Vista or 7 in the Advanced Boot Options screen, use the arrow keys to highlight Safe Mode with Networking , and then press ENTER.
   \
   If you are using Windows 8, press 5  on your keyboard to Enable Safe Mode with Networking.
   Windows will start in Safe Mode with Networking.

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STEP 2: Run RKill to terminate the malicious processes associated with Windows Activity Booster

RKill is a program that will attempt to terminate all malicious processes associated with Windows Activity Booster, so that we will be able to perform the next step without being interrupted by this malicious software.
Because this utility will only stop Windows Activity Booster running process, and does not delete any files, after running it you should not reboot your computer as any malware processes that are configured to start automatically will just be started again.

1. While your computer is in Safe Mode with Networking ,please download the latest official version of RKill.Please note that we will use a renamed version of RKILL so that Windows Activity Booster won’t block this utility from running.
   RKILL DOWNLOAD LINK (This link will automatically download RKILL renamed as iExplore.exe)
2. Double click on iExplore.exe to start RKill and stop any processes associated with Windows Activity Booster.
   
3. RKill will now start working in the background, please be patient while the program looks for Windows Activity Booster malicious process and tries to end them.
   
   If you get a message from Windows Activity Booster stating that RKill is an infection, and then closes this utility, leave the warning on the screen and then run RKill again.
   By not closing the warning, this typically will allow you to bypass the malware trying to protect itself so that RKill can terminate Windows Activity Booster.
4. When the Rkill utility has completed its task, it will generate a log. Do not reboot your computer after running RKill as the malware programs will start again.
   

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STEP 3: Remove Windows Activity Booster virus with Malwarebytes Anti-Malware FREE

Malwarebytes Anti-Malware Free is a powerful on-demand scanner which will remove Windows Activity Booster malicious files from your computer.

1. You can download Malwarebytes Anti-Malware Free from the below link, then double-click on the icon named mbam-setup.exe to install this program.
   MALWAREBYTES ANTI-MALWARE DOWNLOAD LINK(This link will open a download page in a new window from where you can download Malwarebytes Anti-Malware Free)
2. When the installation begins, keep following the prompts in order to continue with the setup process, then at the last screen click on the Finish button.
   
3. On the Scanner tab, select Perform quick scan, and then click on the Scan button to start searching for the Windows Activity Booster malicious files.
   
4. Malwarebytes’ Anti-Malware will now start scanning your computer for Windows Activity Booster virus as shown below.
   
5. When the Malwarebytes Anti-Malware scan has finished, click on the Show Results button.
   
6. You will now be presented with a screen showing you the computer infections that Malwarebytes Anti-Malware has detected. Make sure that everything is Checked (ticked), then click on the Remove Selected button.
   
7. Once your computer will restart in Windows regular mode, open Malwarebytes Anti-Malware and perform a Full System scan to verify that there are no remaining threats.

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STEP 4: Remove Windows Activity Booster rootkit with RogueKiller

RogueKiller is a utility that will scan for the Windows Activity Booster rootkit, registry keys and any other malicious files on your computer.

1. You can download the latest official version of RogueKiller from the below link.
   ROGUEKILLER DOWNLOAD LINK (This link will automatically download RogueKiller on your computer)
2. Double click on RogueKiller.exe to start this utility and then wait for the Prescan to complete.This should take only a few seconds,  then click on the Scan button to perform a system scan.
   
3. After the scan has completed, press the Delete button to remove Windows Activity Booster malicious registry keys or files.
   

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STEP 5: Remove Windows Activity Booster infection with HitmanPro

HitmanPro is a cloud on-demand scanner, which will scan your computer with 5 antivirus engines (Emsisoft, Bitdefender, Dr. Web, G-Data and Ikarus) for the Windows Activity Booster infection.

1. You can download HitmanPro from the below link:
   HITMANPRO DOWNLOAD LINK (This link will open a web page from where you can download HitmanPro)
2. Double-click on the file named HitmanPro.exe (for 32-bit versions of Windows) or HitmanPro_x64.exe (for 64-bit versions of Windows). When the program starts you will be presented with the start screen as shown below.
   
   Click on the Next button, to install HitmanPro on your computer.
   
3. HitmanPro will now begin to scan your computer for Windows Activity Booster trojan.
   
4. When it has finished it will display a list of all the malware that the program found as shown in the image below. Click on the Next button, to remove Windows Activity Booster virus.
   
5. Click on the Activate free license button to begin the free 30 days trial, and remove all the malicious files from your computer.
   

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Your computer should now be free of the Windows Activity Booster infection. 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, and perform regular computer scans with HitmanPro.
If you are still experiencing problems while trying to remove Windows Activity Booster from your machine, please start a new thread in our Malware Removal Assistance forum.