Remove Trojan:Win32/Sefnit.AS – How to Delete Trojan:Win32/Sefnit.AS?

Do you feel helpless when AVG detected Trojan:Win32/Sefnit.AS on your computer? Do you have no clue to find out the causes of the infection and address the root of the problems? Is your computer weird and sometimes stuck like a snail? Wondering to find a surefire way to help you out of trouble? If you are also suffering from this annoying issue, you have come to right place. Carefully read this post and you will find the answer and know how to effectively remove Trojan:Win32/Sefnit.AS from your PC.

What is Trojan:Win32/Sefnit.AS?

Trojan:Win32/Sefnit.AS is a notorious and nasty Trojan horse that can cause serious PC problems. It attacks the affected computers with operating system and damages PCs severely. It is well designed by cyber criminals to corrupt the target computer and steal the innocent users’ sensitive information for illegal profits. It can bring additional parasites on your PC and add malicious codes to registry. It is capable of opening a backdoor for remote attackers and helps take full control of your computer. In order to escape the scanning of security software, it can disable your executable programs and block you to access the Internet.

It is able to change your system settings and delete critical files randomly without consent. It shows up numerous unwanted pop-up ads, error messages and fake alerts on your screen when you are online. Besides, it will run many unknown processes in the background to consume your high resources to make your PC sluggish. What’s worse, it can take advantage of keyloggers to record your sensitive information such as online banking information, credit card numbers, identity information, logon names, passwords, etc. It will send it to the remote attackers for illegal benefits. To avoid further damage and data loss, you have to take thorough action to promptly remove Trojan:Win32/Sefnit.AS from your computer without hesitation.

Manually get rid of Trojan:Win32/Sefnit.AS

Step one: Restart your computer in safe mode.
Windows 8
Restart your infected computer and press Ctrl + Alt + Del keys together while the machine is booting up.

Press Shift key and click ‘shut down’ icon at once on the pop-up screen.
Press restart button to access ‘Choose An Option’ screen.
Next select ‘Troubleshoot’ before ‘Advance Options’.

Select ‘Windows Startup settings’ in the next window to continue.
Then press Shift key and click on ‘Restart’ button again to select ‘Enable Safe Mode’.

Windows 7/Vista/XP
Restart system and keep tapping “F8” key before Windows loads.

When “Advanced Options Menu” starts, you can use your arrow keys to highlight ‘Safe Mode with Networking” option, and then press Enter key to proceed.

Step two: Enter into Database and remove items generated by Trojan:Win32/Sefnit.AS.
Click to run “Run” box from Start menu (Windows 8 users may need to type “Run” in Search Charm bar).
Type “regedit” and hit Enter key will bring to your Database window.
Navigate to the following entries and remove the related items accordingly.

HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionRun\[random numbers and letters]
HKEY_LOCAL_MACHINESOFTWAREClientsStartMenuInternetINTEXPLORE.pif\ToP
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{random numbers}
HKCU\Software\Microsoft\Windows\CurrentVersion\App Management\ARPCache\{random numbers}
Step three: End its running processes with related to Trojan:Win32/Sefnit.AS.
Press Ctrl + Alt + Del keys together to access Task Manager.
Under the View tab, choose “Select Columns” for “Image Path Name” and PID.

Task Manager will then display full path name of programs, suspicious ones that are related to the Trojan can be tracked down.
Go to Start Screen to access All Apps for Accessories (for Windows 7/XP/Vista users Accessories can be found in All Programs contained in Start Menu).

Select System Tools followed up by System Information.

Expand Software Environment and choose Running Tasks to view the path for each service and program in the right pane.
Track down suspicious ones that are related to the Trojan and end running processes accordingly.

Step four: Show hidden items to remove items injected by Trojan:Win32/Sefnit.AS.
Windows 8
Access Windows Explorer and hit its View tab to check ‘File name extensions’ and ‘Hidden items’.

Windows 7/XP/Vista
Access “user accounts and family safety” contained in ‘Control Panel’ for ‘Folder Options’ to tick ‘Show hidden files and folders and non-tick Hide protected operating system files (Recommended)’.

%WINDIR%\SYSTEM32\[random numbers and letters].dll
%TEMP%\[messy code]temp_0\[random letters]setup.exe
%APPDATA%\MicroLab\MyEngin\Common\DeleteSetup.exe
C:\Windows\system32\msconfig.com
C:\Windows\system32\regedit.com
C:\Windows\system32\rundll32.com
Step five: Restart your computer normally to save these changes when the all the steps.

Automatic removal of Trojan:Win32/Sefnit.AS

Have trouble with manual removal or be afraid to cause further damage? Not only you need to edit the files, folders and registry entries associated with this virus, but also you have to be cautious to avoid further man-made damage to your system. Ensure a safe and complete deletion of the Trojan, the best way is to download an advance removal tool on your computer. It is able to do a complete scan of your computer and delete Trojan:Win32/Sefnit.AS automatically from your PC with a short time. Besides, it can help you repair your compromised system automatically and protect your PC from more threats.