What is Backdoor.teamviewer?

Backdoor.teamviewer is a malicious program that might be used to infect your computer with other malware or use it as a proxy. In other words, the cyber criminals behind the program could exploit your computer for illegal activities or attacks on other systems. If you have Backdoor.teamviewer on your computer, you should erase it as soon as possible. Luckily, our researchers at tested this malicious program and found a way to remove it manually. Therefore, if you are up for this task, you can scroll below the text and check the removal instructions. However, if you do not think that you can delete it by yourself, you should download a legitimate antimalware tool and let it erase this threat.testtesttest

Where does Backdoor.teamviewer come from?

Specialists have no doubt that the threat is distributed with a help of malware known as Trojan.MulDrop6.39120. It seems that this Trojan could infect your system while visiting malicious websites that show fake notifications. For example, a malicious site could inform you that you have an outdated version of Adobe Flash player, and if you want to access particular content, you must update it. Surprisingly, the installer you receive should install a legitimate Adobe Flash Player. The bad news is that at the same time Trojan.MulDrop6.39120 will also install Backdoor.teamviewer on your system.

How does Backdoor.teamviewer work?

The malware might create a hidden folder named as “Sin” in the %APPDATA% directory. The folder should contain 5s.exe, avicap32.dll, and nv8moxflu (system file), although, except the DLL file, other ones could have a random title. Thus, you could find similar data in the “Sin” folder, but with different names. Moreover, there might be a few versions of the infection so the location of the malware’s files might vary. For instance, our specialists indicate that some variants do not create any folders at all. Instead, Backdoor.teamviewer places its data in the %APPDATA% directory. In this case, it could place svnhost.exe, teamviewer_resource_en.dll, tv.ini, and winmm.dll or similar files.

The malware also installs a legitimate program called TeamViewer, which might be used to access infected computers. As we mentioned, in the beginning, the infection could drop other malicious applications on your system. Also, it could use your computer as a proxy to relay their Web traffic or for illegal activities, e.g. DDoS attacks. Thus, if you have Backdoor.teamviewer on your system, you should not hesitate to delete it. It is the only way to stop cyber criminals from using your computer as they please.

How to delete Backdoor.teamviewer?

The malware could be eliminated manually, but it will not be an easy task. Therefore, if you are an inexperienced user, you should follow the instructions below this text. For starters, you will have to enable Show hidden files and folders option because otherwise you will not be able to see the malware’s created folder and the files within. Then you should locate the data related to Backdoor.teamviewer and delete it. We can offer you an easier option too if you are willing to install an antimalware tool. Once you install it, you can perform a system scan that will detect the infection. Afterward, you can erase it with one mouse click.

Remove Backdoor.teamviewer from system

Display hidden files and folders

Windows 8 & 10

  1. Open the Explorer and select the View tab on the top-left corner.
  2. Click on Options on the top-right corner.
  3. Select Change folder and search options.
  4. Click on View tab and select Show hidden files, folders and drives.
  5. Click OK.

Windows 7 & Vista

  1. Go to Start and launch Control Panel.
  2. Choose Appearance and Personalization.
  3. Open Folder Options and select the View tab.
  4. Click Show hidden files, folders and drives.
  5. Select OK.

Windows XP

  1. Navigate to Start and open Control Panel.
  2. Select Appearance and Themes.
  3. Choose Folder options and select the View tab.
  4. Find and mark Show hidden files and folders.
  5. Click OK.

Delete Backdoor.teamviewer data

  1. Open the Explorer and go to %APPDATA%
  2. Locate a folder titled as Sin, right-click it and select Delete.
  3. Check the %APPDATA% directory for suspicious files (e.g. svnhost.exe, teamviewer_resource_en.dll, tv.ini, and winmm.dll).
  4. Right-click each file separately and press Delete.
  5. Close the Explorer and empty Recycle bin.
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