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Windows Antivirus Master

Also Known As: Windows Antivirus Master Virus
Damage level: Moderate

What is Antivirus Master?

Windows Antivirus Master is a rogue antivirus program, which indicates fake security infections in order to scare PC users into purchasing 'ultimate protection' (the 'full' version). This bogus software is created by cyber criminals who make money from users who believe the fake security scans and false security warning messages, and go on to purchase a useless license key.

PC users should be aware that buying the 'full version' of this program is equivalent to sending their money and credit card information to cyber criminals. Windows Antivirus Master infiltrates operating systems using hacked or malicious websites, which trick users into downloading the program by generating fake online security warning messages.

At time of research, cyber criminals used fake Microsoft Security Essentials alert messages in order to trick users into downloading their rogue antivirus program.

Windows Antivirus Master fake antivirus

Following successful infiltration, Windows Antivirus Master modifies the registry entries of an infected operating system by blocking execution of installed programs and disabling the Task Manager. Furthermore, this bogus software blocks the desktop and performs fake security scans on each system Startup.

In fact, none of the security threats indicated by this program actually exist on the system - this program imitates the detection of identical security threats on all computers infiltrated. Windows Antivirus Master is a scam - the correct way to deal with this program is to remove it from your computer.

Windows Antivirus Master originates from a family of fake antivirus programs called FakeVimes. Previous variants were named Windows Efficiency Master and Windows Safety Master. Cyber criminals release these bogus programs under different names, but with identical interfaces and functionality.

To avoid computer infection by these fake antivirus programs, do not trust online security warning messages indicating security infections and offering installation of security software to supposedly eliminate the 'detected' threats.

PC users who observe Windows Antivirus Master scanning their computers for security threats, should use this removal guide to eliminate this rogue program from their computers.

Windows Antivirus Master blocking Internet browsers:

Windows Antivirus Master generating fake security warning pop-ups

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Quick menu:

Windows Antivirus Master removal:

Complete these steps to access your desktop:

1. Wait until Windows Antivirus Master complete the fake security scan and click "Settings" (at the top of the main window).

Windows Antivirus Master settings

2. Select "Allow unprotected Startup".

Windows Antivirus Master unprotected start-up

3. After selecting "Allow unprotected Startup", close Windows Antivirus Master.

4. Access "My Computer" - double click the "My Computer" icon.

Accessing My Computer

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

Renaming the executable file of Windows Antivirus Master step 1

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

Renaming the executable file of Windows Antivirus Master step 2

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

Renaming the executable file of Windows Antivirus Master step 3

8. After renaming the "svc-[random letters].exe" file, restart your computer. Next time the operating system boots, Windows Antivirus Master 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 Antivirus Master removal using a registry key:

1. Click the question mark icon (at the top of the main window of Windows Antivirus Master) and select "Register".

Removing Windows Antivirus Master using registration key step 1

2. In the opened window enter this registry key: 0W000-000B0-00T00-E0001

Removing Windows Antivirus Master using registration key step 2

3. After entering this registry key, Windows Antivirus Master 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 Antivirus Master from your computer.

Windows Antivirus Master 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 in order to display various errors when 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, you should reset your Hosts file. Do not skip this step since Windows Antivirus Master modifies your Hosts file and you will encounter browser redirect problems if malicious entries are not 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, that 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 Antivirus Master:

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 antivirus master virus and other rogue antivirus programs:

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

To protect your computer from windows antivirus master virus 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 antivirus master virus 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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