Is Troj/Medfos-F Dangerous to Your PC? - How to remove Troj/Medfos-F?

Troj/Medfos-F is a harmful Trojan horse that can bypass your antivirus program and settle down in your computer for the purpose of stealing confidential information. Most of PC users complain that they have tried removing this Trojan horse many times but still cannot wipe it out from their infected computers. If your computer is also infected by this Trojan horse, you can follow the guide provided in this post to get rid of it from your infected computer.

How Does Troj/Medfos-F Infect Your PC?

You may wonder how this Trojan horse can break into your computer system since you have antivirus program protect it. Actually, malware like Trojan horse, spyware or adware can come bundled with low-cost or free software applications downloaded from the Internet. As a Trojan horse, Troj/Medfos-F can also slip into your computer in this way. Apart from this, the Trojan horse can be imbedded into an email attachment and sent to you. If you download the infected attachment, the Trojan horse can slip into your computer with ease. Apart from the two ways above, it can infect your computer via malicious websites, suspicious links, social networks and removable storage devices and so forth. Therefore, you should be very careful when surfing the net and avoid bringing this Trojan horse and other threats to your computer.

Is Troj/Medfos-F Dangerous to Your PC?

The answer is yes. This Trojan horse can do lots of harmful activities in your computer when it hides in the background of your system. In order to ensure an automatic running every time your Windows logs in, it will add its own malicious entries to the Windows registry and make some changes to your registry settings as well. It will also drop its copies into your C drive to infect many important system files like executable files, which may block you from opening certain applications and programs. In addition, it can download and install other hazardous software or adware onto your computer. As a result, your computer will receive many security messages and advertisement pop-ups, making you feel annoyed a lot. What’s worse, this Trojan horse possesses the capacity of capturing your private information, such as your online banking account details, and sending to the remote hacker via a special sever. So, please take immediate actions to clear up Troj/Medfos-F from your machine.

Note: The manual removal way is only for users who have sufficient computer expertise and experience. If you are just a computer illiterate, using an automatic removal tool to remove the malicious Trojan horse will be a better choice.

How to Remove Troj/Medfos-F in the Manual Way

Step 1: Restart your computer. During the startup process, keep pressing the key F8 repeatedly. When the Windows menu shows up, you should use the up and down arrow keys to highlight “Safe Mode with Networking” and then press Enter.
Step 2: Open Windows Task Manager by pressing “Ctrl + Alt + Delete” and go to “Processes” tab. Search for and stop the processes related to Troj/Medfos-F.
Step 3: Go to Control Panel from the Start menu. Click on “Folder and Search Options” and select “View”. Tick “Show hidden files and folders”, non-tick “Hide protected operating system files (Recommended)” and click OK.
Step 4: Navigate to the locations of the following files and delete all of them from your computer.

%UserProfile%\
%UserProfile%\Application Data\
%UserProfile%\Start Menu\Programs\
%AppData%[trojan name]toolbardtx.ini
%AppData%[trojan name]toolbaruninstallIE.dat
%AppData%[trojan name]toolbarversion.xml

Step 5: Go to “Run” from the Start menu. Type “regedit” in the box and press Enter. In the Registry Editor, find out and delete the registry entries added by the Trojan horse.

HKEY_CURRENT_USER\Software\Microsoft\WindowsCurrentVersion\Run “”
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\random
HKEY_CURRENT_USER\Software\Microsoft\Installer\Products\wow64YRIK821024 “(Default)”=”1?
HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionInternet Settings “WarnonBadCertRecving” = ’0?

In current day, a Trojan horse always appears as legitimate software, but when installed, it will begin to perform various harmful activities onto your computer system, making your computer almost unusable and even causing your personal information to be exposed to unknown people. For these reasons, it is important for you to remove the Trojan horse from your computer promptly. Troj/Medfos-F shares the similarities with other malicious Trojan horses that it will badly destroy your computer system and steal your private information. So, you must get rid of it quickly, before it has the time to fester your PC.

There are some ways to remove the Trojan horse, like system restore, manual removal and automatic removal. We have introduced the manual removal above. If you follow the guide to remove the Trojan horse, but it turns out to be a failure, then you can try system restore, or automatic removal. The automatic removal is usually effective, and system restore, most of time, does not ensure a complete removal, especially for Trojan horse removal. Therefore, you can get rid of Troj/Medfos-F using a powerful removal tool if the manual removal cannot succeed removing this threat from your computer.