Backdoor.teamviewer Removal Guide

Backdoor.teamviewer is a dangerous threat if it finds a way to slither onto your system without your knowledge. This backdoor application can pose a major threat to your computer and your privacy as well. It is quite likely that you would not even realize that this backdoor is on board even if you find TeamViewer on your system and do not recall installing it. It is vital to understand how this severe threat can appear on your computer so that you can protect it from similar attacks. The most important thing to know right now is that you should delete Backdoor.teamviewer the moment you realize it is on board. We are here to provide you with the necessary knowledge about this malware infection so that you realize the urgency of action. This infection is way more serious than an adware program or a browser hijacker. Please read our full report to be aware of the potential risks and how you can eliminate this threat from your PC.

Although this backdoor itself is a Trojan program, it uses another Trojan (Trojan.MulDrop6.39120) to spread on the web. In fact, the latter Trojan is a fake Abode Flash player updater that drops this backdoor silently onto your machine. A lot of unsuspecting computer users get infected because of such fake updaters since they believe that they must update their Flash player in order to view some web content. This trick is frequently used by cyber criminals to fool inexperienced users into clicking on their corrupt content to install fake updaters that will eventually drop a few nasty surprises. There are several ways for you to encounter such malicious update notices. Most likely, this Trojan spreads in the form of a banner or pop-up ad that may look like a Windows system dialog box. A lot of times this box may even flash so that it draws your attention. Reading that your Flash driver needs to be updated for certain made-up reasons may seem to be totally acceptable to you. But one single click and you can drop Backdoor.teamviewer onto your computer.

It is possible that these fake updaters come through malicious websites. It means that for some reason you may end up on an unreliable freeware or torrent site and you see this Flash updater notice there. Another option is that this banner or pop-up is generated by an adware program that previously infected your system. Either way, you need to be very careful in the future about where you click and what pages you end up on if you want to protect your computer. However, if you do not remove Backdoor.teamviewer right now, it is quite likely that you will have more severe security issues in the near future.

Trojan.MulDrop6.39120 does not only drop Backdoor.teamviewer onto your computer; it also installs a legitimate Flash player update and a legitimate program called TeamViewer. The latter is a remote desktop application that is actually installed without your permission and knowledge. But, obviously, the most dangerous issue here is this backdoor. We have noticed that this infection may be used for one of two goals: to create a proxy server out of your infected PC or to install more malware infections. It is important to understand the danger in your computer being used as a proxy server. This means that criminals can hide their tracks when committing online crimes since you will become the number one suspect, most probably, your IP address being the one that is used for the scams. This could put you in an impossible position. But this backdoor might be used for anything really since it can be commanded from the C&C server (Command and Control) by the criminals. It is very important that you remove Backdoor.teamviewer ASAP if you want to protect your PC.

Since this backdoor hides its folder from you, first of all you need to make sure that all the files and folders are made visible in your File Explorer. Only then can you actually delete Backdoor.teamviewer and the related files. Please follow our guide below if you need help with the necessary steps. It is possible that this is not the first time your computer has been hit by such a beast. If you want proper protection, we advise you to consider installing a professional anti-malware program, such as SpyHunter. Keep this tool updated regularly and you will enjoy real peace of mind.

Display hidden and system protected files

Windows 8, Windows 8.1, and Windows 10

1. Tap Win+R and enter Control Panel. Press OK.
2. Open Appearance and Personalization.
3. Choose Show hidden files and folders in the Folder Options section.
4. Click the radio button labeled Show hidden files, folders, and drives under Hidden files and folders in the Advanced list.
5. Uncheck the checkbox called Hide protected operating system files (Recommended).
6. Press Apply.

Windows Vista and Windows 7

1. Tap Win+E to start up File Explorer.
2. Press Organize.
3. Choose Folder and search options.
4. Click on the View tab.
5. Locate Show hidden files and folders and tick the box.
6. Uncheck the Hide protected operating system files (Recommended) checkbox.
7. Press Apply.

Windows XP

1. Tap Win+E to launch File Explorer.
2. Access the Tools tab.
3. Choose Folder Options from the menu and click on the View tab.
4. Locate and tick Show hidden files and folders in the Advanced Settings list.
5. Uncheck the Hide protected operating system files (Recommended) box.
6. Press Apply.

Remove Backdoor.teamviewer from Windows

1. Tap Win+E to open File Explorer.
2. Bin the %Appdata%\Sin folder.
3. Look for suspicious files (winmm.dll) in the %Appdata% folder and delete them.
4. Empty the Recycle Bin.