'Windows Defender Prevented Malicious Software' Scam

'Windows Defender Prevented Malicious Software' Scam Description

The 'Windows Defender Prevented Malicious Software' message is generated by a Trojan that is associated with technical support tactics. The 'Windows Defender Prevented Malicious Software' should not be trusted because it promotes fake computer support services on the 877-360-0485 toll-free phone line, which is not operated by Microsoft Corp. The Trojan at hand is crafted to generate a lock screen on the desktop, which is loaded as soon as the user logs into Windows. Cyber security experts are not sure how the Trojan is delivered to users, but there is a good chance that a free program may have been bundled with badware. The 'Windows Defender Prevented Malicious Software' lock screen cannot be removed with the Alt+F4 keyboard command and tools like regedit.exe, Command Prompt, and taskmngr.exe may not be accessible.

Security analysts note that the 'Windows Defender Prevented Malicious Software' lock screen is styled to look like the update screen on Windows 10. Users that are shown the 'Windows Defender Prevented Malicious Software' screen are lead to believe that the Microsoft's security tool have detected threatening programs and access is limited to the PC. The text on the 'Windows Defender Prevented Malicious Software' screen reads:

'Customer Support: 1-877-360-0485
Microsoft Windows
Please Enter Product Key
Windows Defender prevented an unrecognized and malicious software on your computer. Please enter your Windows Product Key. The Product Key should be on a label or the card inside the box that Windows Disk came in or in the confirmation email you received after buying it. If you have upgraded to Windows 10, you have a digital license instead of a key.
A product key is a 25 character code used to active Windows. It look like this:

The Trojan behind the 'Windows Defender Prevented Malicious Software' hoax provides links to download remote desktop tools such as Supremo, TeamViewer and GoToAssist. These tools are legitimate remote desktop utilities that are exploited by con artists with the aim to simulate virus infection on remote computers and offer a 'fix' in exchange for hundreds of dollars. We have seen the scenario play out with the Microsoft Security Essentials Alert Virus. Fortunately, researchers found a hardcoded key for the 'Windows Defender Prevented Malicious Software' lock screen, which you can enter. The key is THTY4-89LK6-RTI23-XZTOP-05ERY, and you may have to write it down on a piece of paper because copy/pasting is disabled on the 'Windows Defender Prevented Malicious Software' screen message. From here on, you could use a reputable anti-spyware tool to find and delete the Trojan that infiltrated your PC.

Do You Suspect Your PC May Be Infected with 'Windows Defender Prevented Malicious Software' Scam & Other Threats? Scan Your PC with SpyHunter

SpyHunter is a powerful malware remediation and protection tool designed to help provide PC users with in-depth system security analysis, detection and removal of a wide range of threats like 'Windows Defender Prevented Malicious Software' Scam as well as a one-on-one tech support service. Download SpyHunter's FREE Malware Remover
Note: SpyHunter's scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter's malware removal tool to remove the malware threats. Read more on SpyHunter. Free Remover allows you to run a one-off scan and receive, subject to a 48-hour waiting period, one remediation and removal. Free Remover subject to promotional details and Special Promotion Terms. To understand our policies, please also review our EULA, Privacy Policy and Threat Assessment Criteria. If you no longer wish to have SpyHunter installed on your computer, follow these steps to uninstall SpyHunter.

Security Doesn't Let You Download SpyHunter or Access the Internet?

Solutions: Your computer may have malware hiding in memory that prevents any program, including SpyHunter, from executing on your computer. Follow to download SpyHunter and gain access to the Internet:
  • Use an alternative browser. Malware may disable your browser. If you're using IE, for example, and having problems downloading SpyHunter, you should open Firefox, Chrome or Safari browser instead.
  • Use a removable media. Download SpyHunter on another clean computer, burn it to a USB flash drive, DVD/CD, or any preferred removable media, then install it on your infected computer and run SpyHunter's malware scanner.
  • Start Windows in Safe Mode. If you can not access your Window's desktop, reboot your computer in "Safe Mode with Networking" and install SpyHunter in Safe Mode.
  • IE Users: Disable proxy server for Internet Explorer to browse the web with Internet Explorer or update your anti-spyware program. Malware modifies your Windows settings to use a proxy server to prevent you from browsing the web with IE.
If you still can't install SpyHunter? View other possible causes of installation issues.

Site Disclaimer

Enigmasoftware.com is not associated, affiliated, sponsored or owned by the malware creators or distributors mentioned on this article. This article should NOT be mistaken or confused in being associated in any way with the promotion or endorsement of malware. Our intent is to provide information that will educate computer users on how to detect, and ultimately remove, malware from their PC with the help of SpyHunter and/or manual removal instructions provided on this article.

This article is provided "as is" and to be used for educational information purposes only. By following any instructions on this article, you agree to be bound by the disclaimer. We make no guarantees that this article will help you completely remove the malware threats on your PC. Spyware changes regularly; therefore, it is difficult to fully clean an infected machine through manual means.

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