Windows PC Defender is a new rogue from the same family as Ultimate System Guard and Windows Guard Pro. Windows PC Defender is promoted through the use of pop-ups that appear when browsing the web. These pop-ups will state that malware was detected on your computer and that you should perform an online anti-malware scan. Regardless of what button you press on this pop-up you will be brought to a page that shows what appears to be an online scanner that is scanning your computer. This scanner, though, is only an advertisement and has no way of scanning your computer, let alone telling you if there are infections on it. When the advertisement is finished it will state that you are infected and then prompt you to download Windows PC Defender to your computer.
If you decide to download and install Windows PC Defender, it will be configured to start automatically when your computer starts. The installer will also create numerous harmless files on your computer that are used to impersonate malware files. Once the program is running it will scan your computer and then display these files as infections, but will not allow you to remove them until you purchase the program. The files that the program is detecting are not capable of harming your computer, but are only being shown to validate the scan results. Regardless of what the scan displays, you should not purchase Windows PC Defender.
While the program is running you will also see numerous security alerts appear on your desktop and from your Windows taskbar. The taskbar alerts typically will contain some sort of message stating that Windows PC Defender has found malicious software running. The desktop alerts appear as windows that are shown over your running programs and will not minimize until you respond to them. These desktop alerts typically contain more dire alerts such as your computer is being hacked by a remote computer. Just like the scan results, these fake security alerts are just another tactic being used to scare you into purchasing the program.
As you can see, Windows PC Defender was created just to scam you out of your money by making you think that your computer is infected. In reality, though, Windows PC Defender is the infection itself. If you find that you are infected with this program, then please use the removal guide below to remove Windows PC Defender and any related malware from your computer.
Self Help Guide
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.
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.
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.
Once it is downloaded, double-click on the iExplore.exe icon in order to automatically attempt to stop any processes associated with Windows PC Defender 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.
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:
Once downloaded, close all programs and Windows on your computer, including this one.
Double-click on the icon on your desktop named mbam-setup-bc.1878-22.214.171.1243.exe. This will start the installation of MBAM onto your computer.
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.
MBAM will now start and you will be at the main screen as shown below.
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.
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.
Now that you have enabled rootkit scanning, click on the Scan button to go to the 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.
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.
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.
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.
You can now exit the MBAM program.
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:
Your computer should now be free of the Windows PC Defender 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:
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!