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Windows Pro Defence Kit

Also Known As: Windows Pro Defence Kit scam
Damage level: High

What is Pro Defence Kit?

Windows Pro Defence Kit is a fake antivirus program, which generates fake security warning messages in order to trick unsuspecting PC users into purchasing a useless license key. Cyber criminals responsible for creating this scam employ fake online security scanners and 'exploit kits' to proliferate this bogus software.

Fake online security scanners are pop-up ads imitating the scanning of systems and reporting 'critical security issues', which can be supposedly be eliminated by downloading and installing Windows Pro Defence Kit. Exploit kits are malware infections, which rely on outdated software to infiltrate operating systems.

Following successful infiltration, this rogue antivirus program modifies the operating system registry files and configures itself to run automatically on each system Startup.

Windows Pro Defence Kit

These modifications lead to fake security scans being performed by Windows Pro Defence Kit when the system boots. The 'security scan' reports the 'detection' of various high-risk malware and viruses. To remove these supposedly-detected security infections, this rogue software demands activation of "ultimate protection" (the 'full' version).

PC users should not buy this program - it is a scam developed by cyber criminals. Paying for this rogue program is equivalent to sending your money and banking information to cyber criminals.

If you observe Windows Pro Defence Kit scanning your computer for security infections, your PC is infected with a rogue antivirus program - ignore the fake security warning messages. The correct way to deal with this bogus program is to eliminate it from your computer.

This fake antivirus program originates from a family of rogue security scanners called FakeVimes. Previous variants were named Windows Defence Master, Windows Security Master, and Windows Defence Unit.

Cyber criminals responsible for creating this scam, attempt to make this program appear as if it was developed by Microsoft, however, Microsoft has only one antivirus program called Microsoft Security Essentials - a legitimate free program, which makes no demands for payment of a so-called 'full version' in order to access the desktop.

Computer users who are dealing this this bogus program should be aware that none of the security infections indicated by Windows Pro Defence Kit actually exist on their computer. This bogus program generates an identical list of supposedly-detected malware on all computers infiltrated.

If you observe this program on your desktop, use the removal instructions provided to eliminate this scam from your operating system.

Windows Pro Defence Kit generating fake torrent alert pop-ups:

Windows Pro Defence Kit generating fake torrent alerts

Screenshot of Windows Pro Defence Kit blocking execution of Internet browsers:

Windows Pro Defence Kit blocking execution of Internet browsers

Screenshot of Windows Pro Defence Kit demanding payment of $99.9 for the full version:

Windows Pro Defence Kit rogue payment page

How does Windows Pro Defence Kit infect user's computer?

This fake antivirus program infiltrates operating systems via fake online security warning messages. When landing on malicious or hacked websites, users are presented with the fake Microsoft Antivirus message: "Message from webpage - Microsoft Antivirus has found critical process activity on your PC. You need to clean your computer to prevent the system breakage".

Fake Microsoft Antivirus pop-up

In the second step of this scam, users are presented with another fake message, which is supposedly derived from Microsoft Security Essentials: "Microsoft Security Essentials Alert. Microsoft Security Essentials detected potential threats that might compromise your privacy or damage your computer. You need to clean your computer immediately to prevent the system crash".

Fake Microsoft Security Essentials pop-up

Clicking the "Clean computer" button downloads Windows Pro Defence Kit on the victim's computer.

Windows Pro Defence Kit infecting user's computer

PC users who observe Windows Pro Defence Kit scanning their computers for security infections should use this removal guide to eliminate this fake antivirus program from their computers.

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Quick menu:

Windows Pro Defence Kit removal:

Complete these steps to access your desktop:

1. Wait until Windows Pro Defence Kit completes the fake security scan and click "Settings" (at the top of the main window).

Windows Pro Defence Kit settings

2. Select "Allow unprotected Startup".

windows pro defence kit unprotected startup

3. After selecting "Allow unprotected Startup", close Windows Pro Defence Kit.

4. Access "Computer". Double click the "Computer" icon.

Accessing My Computer

5. Navigate to C:\Users\[YOUR USER NAME]\AppData\Roaming

Accessing appdata folder

6. Locate a file named "svc-[random letters].exe" and click your right mouse button over this file.

Renaming the executable file of Windows Pro Defence Kit step 1

7. In the opened menu, select "Rename". Change the filename of "svc-[random letters].exe" to "fake.exe".

Renaming the executable file of Windows Pro Defence Kit step 2

8. After renaming the "svc-[random letters].exe" file, restart your computer. Next time the operating system boots, Windows Pro Defence Kit will be inactive and will not block access to the Internet.

6. Download legitimate anti-spyware software to completely remove this rogue antivirus program from your computer.

If you cannot download or run the spyware remover try running the registry fix (link below). It enables execution of programs. Download the registryfix.reg file, double click it, click YES and then OK.

Windows Pro Defence Kit removal using a registry key:

1. Click the question mark icon (at the top of the main window of Windows Pro Defence Kit) and select "Register".

Removing Windows Pro Defence Kit using registration key step 1

2. In the opened window enter this registry key: 0W000-000B0-00T00-E0021

Removing Windows Pro Defence Kit using registration key step 2

3. After entering this registry key, Windows Pro Defence Kit imitates the removal of previously 'detected' security threats and allows execution of installed programs. Note that entering this registration key will not remove this rogue antivirus program - it simply makes the removal process less complicated.

4. Download legitimate anti-spyware software to completely remove Windows Pro Defence Kit from your computer.

Windows Pro Defence Kit removal using Safe Mode with Networking:

Step 1

Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer starting process press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, then select Safe Mode with Networking from the list.

Starting Windows in Safe mode with networking

Video showing how to start Windows 7 in "Safe Mode with Networking":

Video showing how to start Windows XP in "Safe Mode with Networking":

Step 2

Remove proxy settings from Internet Explorer. This rogue antivirus adds a proxy to the user's Internet connection settings to display various errors when the user attempts to access the Internet. To remove proxy settings: Open Internet Explorer and click the gear icon. In the opened menu, select "Internet Options".

Removing proxy setings from Intenret Explorer step 1

In the opened window select the "Connections" tab.

Removing proxy settings from Internet Explorer step 2

In the "Connections" tab, click on "LAN settings".

Removing proxy settings from Internet Explorer step 3

If "Use a proxy server for your LAN" is checked, uncheck it and click OK.

Removing proxy settings from Internet Explorer step 4

Step 3

Download legitimate anti-spyware software to completely remove this fake antivirus program from your computer.

Step 4

After removing this rogue software, reset your Hosts file. Do not skip this step since Windows Pro Defence Kit modifies your Hosts file and you will encounter browser redirect problems unless malicious entries are eliminated.

The Hosts file is used to resolve canonical names of websites to IP addresses. When it is changed, the user may be redirected to malicious sites, despite seeing legitimate URLs in address bar. It is difficult to determine sites are genuine when the Hosts file is modified.

To fix this, please download the Microsoft Fix It tool, which restores your Hosts file to the Windows default. Run this tool when downloaded and follow the on-screen instructions. Download link below:

Other tools known to remove Windows Pro Defence Kit:

Summary:

The fake antivirus programs (also known as "rogue antivirus programs" or "scareware") are applications that tries to lure computer users into paying for their non-existent full versions to remove the supposedly detected security infections (although the computer is actually clean). These bogus programs are created by cyber criminals who design them to look as legitimate antivirus software. Most commonly rogue antivirus programs infiltrate user's computer using poop-up windows or alerts which appear when users surf the Internet. These deceptive messages trick users into downloading a rogue antivirus program on their computers. Other known tactics used to spread scareware include exploit kits, infected email messages, online ad networks, drive-by downloads, or even direct calls to user's offering free support.

A computer that is infected with a fake antivirus program might also have other malware installed on it as rogue antivirus programs often are bundled with Trojans and exploit kits. Noteworthy that additional malware that infiltrates user's operating system remains on victim's computer regardless of whether a payment for a non-existent full version of a fake antivirus program is made. Here are some examples of fake security warning messages that are used in fake antivirus distribution:

Fake pop-up used in rogue antivirus distribution example 1

Fake pop-up used in rogue antivirus distribution example 2

Computer users who are dealing with a rogue security software shouldn't buy it's full version. By paying for a license key of a fake antivirus program users would send their money and banking information to cyber criminals. Users who have already entered their credit card number (or other sensitive information) when asked by such bogus software should inform their credit card company that they have been tricked into buying a rogue security software. Screenshot of a web page used to lure computer users into paying for a non-existent full version of windows pro defence kit scam and other rogue antivirus programs:

example of a webpage used to collect payments for fake antivirus programs

To protect your computer from windows pro defence kit scam and other rogue antivirus programs users should:

  • Keep their operating system and all of the installed programs up-to-date.
  • Use legitimate antivirus and anti-spyware programs.
  • Use caution when clicking on links in social networking websites and email messages.
  • Don't trust online pop-up messages which state that your computer is infected and offers you to download security software.

Symptoms indicating that your operating system is infected with a fake antivirus program:

  • Intrusive security warning pop-up messages.
  • Alerts asking to upgrade to a paid version of a program to remove the supposedly detected malware.
  • Slow computer performance.
  • Disabled Windows updates.
  • Blocked Task Manager.
  • Blocked Internet browsers or inability to visit legitimate antivirus vendor websites.

If you have additional information on windows pro defence kit scam or it's removal please share your knowledge in the comments section below.

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About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

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