DefenderTamperingRestore is a stealthy Trojan horse virus that can silently infect any computer and manage its major processes and data. Threats such as DefenderTamperingRestore are typically spread through spam or click-bait advertising, but may also be masked as pirated apps.


Detection of the DefenderTamperingRestore virus on your machine,

A new cyber hazard that threatens numerous computers across the Internet has recently been reported by security researchers. The infection is called DefenderTamperingRestore and operates as a malware component of the Trojan horse type.

Perhaps you know that Trojans are a type of malware that can put computers at serious risk and inflict multiple types of harm in a very short period of time. That is why hackers use them for multiple criminal activities.

DefenderTamperingRestore particularly is an advanced Trojan-based virus that can be found in different types of web content including free apps, various free software installation kits, pirated content, torrents, sketchy websites, hacked applications, spam messages, email attachments, fake advertisements, infected web links and more.

Like a typical Trojan, DefenderTamperingRestore may be used as a multi-purpose weapon for different illegal activities. What the results of its attack will be is impossible to predict because such a threat is theoretically capable of everything. It can mess with your operating system, delete certain data, uninstall your applications, execute harmful activities and hidden malicious processes in the background, install some viruses, adjust the configurations of your computer, crash some programs, etc.


It may not take long for a sophisticated virus like Win32/DefenderTamperingRestore to erase your files, steal your passwords and bank details or spy on all your online and offline activities within the infected computer without your knowing. Such malware can also secretly inject ransomware, spyware and other malware inside your computer, and cause security problems by blocking the antivirus software you have and preventing it from detecting the infections.

The greatest difficulty when coping with Trojans is to identify and uninstall all the harmful components correctly since they are typically distributed to multiple system locations and often mimic regular system files and processes in order to trick the people who are trying to remove them. That’s why the best way to correctly identify and remove the hidden malicious files from all the system locations is to use professional removal software.

How to properly delete DefenderTamperingRestore ?

In most cases, the contamination with DefenderTamperingRestore goes without any signs or suspicious behavior, allowing the Trojan to settle quietly inside the computer and uninterruptedly unleash its malicious agenda. That’s why in case you have even the slightest suspicion that this malware has infected your system, you should quickly focus your efforts on scanning the computer with a reliable security tool. The professional malware removal app and the manual removal guide that you can find below are a good starting point. They will help you navigate through your system files and detect the malicious code as well as remove it while at the same time decrease the possibility of unintended deletion of important OS-related files and components.



Name DefenderTamperingRestore
Type Trojan
Danger Level High (Trojans are often used as a backdoor for Ransomware)
Symptoms The lack of specific symptoms helps Trojans remain hidden for long.
Distribution Method Multiple transmitters such as spam, infected links, malicious web ads, fake pop-ups, torrents, pirated software and more.
Detection Tool

How To Remove DefenderTamperingRestore Virus

If you are looking for a way to remove DefenderTamperingRestore you can try this:

  1. Click on the Start button in the bottom left corner of your Windows OS.
  2. Go to Control Panel -> Programs and Features -> Uninstall a Program.
  3. Search for DefenderTamperingRestore and any other unfamiliar programs.
  4. Uninstall DefenderTamperingRestore as well as other suspicious programs.

Note that this might not get rid of DefenderTamperingRestore completely. For more detailed removal instructions follow the guide below.

If you have a Windows virus, continue with the guide below.

If you have a Mac virus, please use our How to remove Ads on Mac guide.

If you have an Android virus, please use our Android Malware Removal guide.

If you have an iPhone virus, please use our iPhone Virus Removal guide


Some of the steps will likely require you to exit the page. Bookmark it for later reference.

Reboot in Safe Mode (use this guide if you don’t know how to do it).



Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab. Try to determine which processes are dangerous.


Right click on each of them and select Open File Location. Then scan the files with our free online virus scanner:

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    After you open their folder, end the processes that are infected, then delete their folders.

    Note: If you are sure something is part of the infection – delete it, even if the scanner doesn’t flag it. No anti-virus program can detect all infections.


    Hold together the Start Key and R. Type appwiz.cpl –> OK.


    You are now in the Control Panel. Look for suspicious entries. Uninstall it/them. If you see a screen like this when you click Uninstall, choose NO:



    Type msconfig in the search field and hit enter. A window will pop-up:


    Startup —> Uncheck entries that have “Unknown” as Manufacturer or otherwise look suspicious.

    • Remember this step – if you have reason to believe a bigger threat (like ransomware) is on your PC, check everything here.

    Hold the Start Key and R copy + paste the following and click OK:

    notepad %windir%/system32/Drivers/etc/hosts

    A new file will open. If you are hacked, there will be a bunch of other IPs connected to you at the bottom. Look at the image below:


    If there are suspicious IPs below “Localhost” – write to us in the comments.


    Type Regedit in the windows search field and press Enter.

    Once inside, press CTRL and F together and type the virus’s Name. Right click and delete any entries you find with a similar name. If they don’t show up this way, go manually to these directories and delete/uninstall them:

    • HKEY_CURRENT_USER—-Software—–Random Directory. It could be any one of them – ask us if you can’t discern which ones are malicious.
      HKEY_CURRENT_USER—-Software—Microsoft—-Windows—CurrentVersion—Run– Random
      HKEY_CURRENT_USER—-Software—Microsoft—Internet Explorer—-Main—- Random

    If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!


    About the author


    Lidia Howler

    Lidia is a web content creator with years of experience in the cyber-security sector. She helps readers with articles on malware removal and online security. Her strive for simplicity and well-researched information provides users with easy-to-follow It-related tips and step-by-step tutorials.

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