Windows Ultra Antivirus

Also Known As: Windows Ultra Antivirus Rogue
Damage level: High

What is Windows Ultra Antivirus?

Windows Ultra Antivirus is a fake antivirus program, which uses trickery in order to sell its useless license key to unsuspecting PC users. This program is an imitation of a legitimate computer security scanner and the processes displayed by Windows Ultra Antivirus are falsely-generated (fake).

This malicious software mimics the detection of security infections - the results identical on all computers infiltrated. Cyber criminals created this rogue program in the hope that you will believe the bogus security warning messages and purchase a full version of this software in order to eliminate supposed security issues.

This bogus software is distributed via security vulnerabilities in users' PCs - Cyber criminals set up misleading websites to exploit these vulnerabilities and install Windows Ultra Antivirus without consent. Often, this rogue antivirus program imitates a critical Windows update.

The landing page, used by Cyber criminals to install this scam, appears like the genuine Windows update website - asking to install the 'Windows Malicious Software Removal Tool (Critical Update) - February 2011 (KB990831)'. To avoid rogue programs such as Windows Ultra antivirus from entering your computer, download your operating system and other program updates from reputable sources only.

Windows Ultra Antivirus

Commonly, fake antivirus programs are grouped into rogue families, however, this software does not seem to derive from any previously-known families. In order to make Windows Ultra Antivirus rogue complicated to eliminate, Cyber criminals have bundled this scam with a rootkit, which protects the registry entries and processes of the fake security scanner.

To successfully remove Windows Ultra Antivirus from your computer, you need to remove the rootkit infection. When installed on your PC, this bogus software uses various deceptive messages in an attempt to coerce you into buying a license key.

This fake software reports that 'Your computer is not protected' and constantly interrupts you with similar pop-ups, such as 'Security Warning! Your computer is not checked for viruses! System scan is recommended.

Press "scan" to check'. Do not believe these messages, it is a scam.

Do not pay for this software - you will send your money to cyber criminals and your computer will remain infected. The statements asserting that your computer does not have 'Antivirus and Antispyware protection', 'Proactive Threat Protection', and 'Network Treat Protection', plus the 'detected security infections' list, are created to scare you into believing that your PC is at risk.

In fact, none of the security threats indicated by Windows Ultra Antivirus exist on your computer. Ignore this malicious software and use the removal guide provided to eliminate it from your PC.

A fake warning message generated by Windows Ultra Antivirus:

"Security Warning! Your computer is not checked for viruses! System scan is recommended. Press "scan" to check."

A fake Windows Update website used to spread Windows Ultra Antivirus:

windows ultra antivirus distribution website

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Quick menu:

Windows Ultra Antivirus removal:


1. Download and install Kaspersky Lab's TDSSKiller.  Windows Ultra Antivirus is bundled with a rootkit infection, so you need to eliminate this first.

If you skip this step, this fake antivirus program will be able to repair its removed registy or system files.


2. Run TDSSKiller and remove all the infections detected. At the end of the scan, change the attribute of indicated 'Locked Service' from 'Skip' to 'Delete' and click 'Continue'.

3. After this procedure, restart your computer in Safe Mode to complete removal of Windows Ultra Antivirus.

4. 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.{jcomments on}


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

5. Download and install recommended antispyware software to completely remove this infection.

Other tools known to remove Windows Ultra Antivirus:


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 ultra antivirus rogue and other rogue antivirus programs:

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

To protect your computer from windows ultra antivirus rogue 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 ultra antivirus rogue 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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