Trojan:Win32/Sefnit.AS is a harmful computer infection which belongs to the Trojan horse family. Many computer users are wonder how this malicious virus gets into their PC as they operated the infected PC as usual. Trojan:Win32/Sefnit.AS is a tricky computer virus which can invade into the target PC through many ways without users’ permission. The most common method of Trojan:Win32/Sefnit.AS spread is hiding into email attachments and then send these spam to computer users with attractive titles. If you couldn’t help opening these emails from unreliable sources, you may offer a chance for Trojan:Win32/Sefnit.AS virus to infiltrate into your computer. Also Trojan:Win32/Sefnit.AS can take advantages of the security vulnerability to sneak into the PC and the visiting of pornographic websites also provides an opportunity for Trojan:Win32/Sefnit.AS virus to invade into the computer.
Once enters into the PC, Trojan:Win32/Sefnit.AS shows its vicious traits:
First of all, Trojan:Win32/Sefnit.AS may change the importance system settings and add its components to the startup menu to make itself get started automatically when computer owners boot the PC. When this modification has been made, it is not easy for the users to reset it back. Only after a completely deletion of Trojan:Win32/Sefnit.AS, you can restore order of the infected computer.
Secondly, in order to get a quick spread and blossom, Trojan:Win32/Sefnit.AS may download other kinds of computer viruses or useless programs without users’ permission. The infiltration of other infections will definitely cause a lot of PC issues, for instance, the browser hijacker virus may bored users by navigating them to a lot of commercial websites.
Thirdly, Trojan:Win32/Sefnit.AS may run in the background and chisel up a backdoor for cyber crooks to remotely invade this compromised PC. Therefore, users’ personal data will be posed in a dangerous condition.
All in all, Trojan:Win32/Sefnit.AS cannot be stayed in the PC any longer. Otherwise, system crash may be the end result. Follow the manual removal guide as below and get rid of the interruption of Trojan:Win32/Sefnit.AS all by yourself.
Method one:Trojan:Win32/Sefnit.AS manual removal method
First: stop all processes that related to Trojan:Win32/Sefnit.AS.
1). Open task manager by pressing window+R keys at the same time, then type taskmgr into and press OK.
2).Terminate all the processes about Trojan:Win32/Sefnit.AS in the Window Task Manager.
Second: show hidden files and folders.
1).click the Start button and choose Control Panel, clicking Appearance and Personalization, to find Folder Options then double-click on it.
2).in the pop-up dialog box, click the View tab and uncheck Hide protected operating system files (Recommended).
3).delete all the files about Trojan:Win32/Sefnit.AS from computer drive
Third: delete all registries created by Trojan:Win32/Sefnit.AS.
1).open Registry Editor by pressing Window+R keys together.(another way is clicking on the Start button and choosing Run option, then typing into Regedit and pressing Enter. )
“EnableShellExecuteHooks”= 1 (0×1)
Forth：Disable any suspicious startup items that are made by infections.
For Windows Xp: Click Start menu -> click Run -> type: msconfig in the Run box -> click Ok to open the System Configuration Utility -> Disable all possible startup items generated.
For Windows Vista or Windows7: click start menu->type msconfig in the search bar -> open System Configuration Utility -> Disable all possible startup items generated.
If the manual guide is kinda difficult for you, please feel free to download automatic removal tool SpyHunter to drive the self-invited guest away.
Method two: Automatically remove Trojan:Win32/Sefnit.AS with Spyhunter antivirus software:
Step 1: click the icon below to download automatic removal tool SpyHunter
Step 2: follow the instructions to install SpyHunter
Step 3: run SpyHunter to automatically detect and remove Trojan:Win32/Sefnit.AS
Summary: Due to the changeable characters of Trojan:Win32/Sefnit.AS, you cannot be too careful to distinguish the harmful files and registries from the system files and registries. If you have spend too much time in manual removing Trojan:Win32/Sefnit.AS and still not make any progress, you can download and install Spyhunter antivirus software here to remove Trojan:Win32/Sefnit.AS automatically for you.