Trojan:Win32/Sefnit!cfg virus, which is similar to many other Trojan infections, is made up of piles of malicious codes and has the ability to mutate all the time. You may have processed a comprehensive scan via the installed antivirus program, but the stubborn virus is still in your computer. You just can spend a lot of time, money and energy on taking your computer to a local repair shop to fix it? Before taking any action, we need to know more the Trojan virus.

Details of Trojan:Win32/Sefnit!cfg

Trojan:Win32/Sefnit!cfg is a very stubborn Trojan virus that is able to damage the target computer severely. It is designed to mess up your computer system and break into another computer through the Internet to go on doing the same malicious things, thus, the rampant virus has attacked many computers worldwide. Usually, the computer will be infected with it if the user visits phishing websites or some other websites showing various annoying advertisements, downloads or install suspicious programs or files, opens spam email attachments and clicks unknown links. Therefore, you should be very careful when you are using the Internet so as to keep your computer clean.

After slipping into the target computer, Trojan:Win32/Sefnit!cfg attaches its infectious codes to some important system files, that is why your antivirus program fails to delete it. Computer performance and network speed are obviously worse than ever since it is occupying high proportion of system resources all through. Typically, you are able to see that many strange icons showing up on the desktop while many original documents and programs cannot be run or even disappear completely. This Trojan is good at implanting its malicious files to the important parts of infected computer system, corrupting registry keys and modifying the names of some important system files. Moreover, the Trojan facilitates the cyber criminals who created it to access the infected computer remotely so as to collect your valuable information including search history and habits, a variety of account login information and confidential documents. These evil guys are capable of entering your computer and stealing those important files or pictures saved in the computer furtively. To prevent further system damages and data loss, the majority of computer users rely on antivirus programs to get rid of Trojan:Win32/Sefnit!cfg. But it pretends to be a normal system process and disables some functions of the antivirus programs so that it is able to avoid being removed successfully. If you want to remove this virus completely and let your computer get back on track, you need to delete all virus related files manually.

Note: Manual Removal requires expertise and is for advanced users. If you don’t have much experience in dealing with the virus, contact YooSecurity Online PC Experts for removal assistance.

Symptoms of Similar Trojan Infection :

– This virus can escape from most antivirus protection and get itself installed on computers especially with Windows operating systems.
– It can cause constant stuck or even blue screens on the infected computers.
– Computer users will experience constant security pop ups on the computers which may not truly represent the status of the PCs.
– Certain malware or spyware may be prompted by these fake security pop ups which will end up scamming money.
– Sensitive data like privacy can also be stolen and taken advantages by cyber criminals.

Manual Removal Step by Step Instructions:

Up till now, there is not a perfect antivirus that can detect this pesky┬áTrojan:Win32/Sefnit!cfg or delete it completely. It has been updated by remote and backstage cyber criminals and is able to escape from the scan of any anti-virus programs thus it is hard to be removed or even found. The most effective way is to remove it manually. The following instructions need quite level of computer expertise. If you don’t know how to that correctly, please contact with YooSecurity online support now!

Step A: Open Windows Task Manager to end process related to this Trojan infection. To do that, press Ctrl+Alt+Del keys at the same time to pull up Window Task Manager; go to Processes tab on top and scroll down the list to find.


Step B: Open Control Panel from Start menu and search for Folder Options. Go to Folder Options window, under View tab, tick Show hidden files and folders and non-tick Hide protected operating system files (Recommended) and then click OK.


Step C: Press Windows+R keys to pull up Run box and type in regedit to open Registry Editor.


Step D: Delete all these associated files and registry entries with this Trojan virus from Registry Editor. The registry files are listed randomly. Besides, you need to delete the infection files of the virus from your system files to prevent it from coming back. Those files are named randomly also but may be different on different operating systems.

Video on How to Modify or Change Windows Registry Safely:

Conclusion :

Trojan:Win32/Sefnit!cfg is a loathsome Trojan virus. It is capable of skipping the block of antivirus programs and bypassing Windows Firewall to come into the computer without letting you know. Most computer users do not even know when and how it gets to their computers, let alone know how to deal with it. Besides, it will bring some other types of viruses or malware to the infected computer which definitely will do greater harm to the computer. Those personal data in your computer will be stolen by the cyber criminals because it invites them to intrude the computer. Some famous antivirus programs will display a warning window every once in a while to tell you that the computer is infected with Trojan:Win32/Sefnit!cfg, but unfortunately, they cannot eliminate it. So, you need to remove it by yourself.

Note: Have tried many methods but failed to get rid of this Trojan virus? If you have no clue, please contact YooSecurity Online Experts in time to save your computer.

Published by Tony Shepherd & last updated on November 10, 2013 11:20 am

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