Quickly Remove Gresim - Remove Trojan Horse Virus from Your Computer

Does your antivirus program keep displaying alerts on the screen for notifying you that Gresim is attempting to infest your computer? This is a vicious Trojan virus so you need to get rid of it as soon as possible. Hence, you still come across it on the virus list of the antivirus program each time when you turn on the computer. So, what should be done next? You may take the local computer technician into account who will speed you grand of money? Please read this article and get more information about Gresim removal.

Friendly Reminder: Please try a professional trojan horse removal tool to remove this trojan horse once you can't remove it through the manual removal guide below.

Description of Gresim

Gresim is a Trojan horse which is detected newly by some famous antivirus programs such as Avast, Avira and Norton. It can result in a complete system disruption for the purpose of obtaining illegal gains and sneak into the computer with the same objective. It poses various computer threats. Once installed on your computer, it soon attaches itself to some vital system files, so that your antivirus program will have difficulty in removing it. When you try to remove the Trojan you may delete some important system files by mistake, which causes great damages. Anyway, the longer this Trojan virus stays on the computer, the more damage the infected machine will suffer.

Generally, if you browse websites that contain a lot of pop up ads, such as porn websites, Gresim can slip into your computer by exploiting the system loopholes. Meanwhile, the virus is also associated with some malicious programs. If you want to avoid attack of this Trojan horse, you should try not to download and install any free software which comes from trustless sources on your computer. The Trojan will start to add malicious codes onto the system to modify the function of the crucial system files. In this way, it is able to stop processes, close programs and stop some programs from running, especially the antivirus programs. Being infected, your computer will sometimes encounter serious problems like shutdown, restarting and blue screen of death, which may cause hard disk damage and important data loss. Once you leave it stay on the system, further dangerous malware will be dropped in the system with the aims to completely control the system where you store your private information and commercial files. What is worse, the Trojan horse disables some crucial system processes forcibly. The hackers can freely browse anything on your computer, including files, pictures, videos and others, and they even steal your important data as well as sensitive information for bad purpose. So, you may have to eliminate it manually by deleting all traces of the Trojan. But deleting this infection requires you to have experience on virus removal.

The manual removal instructions in this post are suitable for the advanced computer users. If you are not familiar with computer, we suggest you use a professional anti-malware tool to assist the removal.

How does the Trojan virus harm your computer?

1. Your system performance will be dragged down. 2. Your system often freezes or crashes thanks to the Trojan virus. 3. Allow other malware to infiltrate into the computer, such as spyware, adware, ransomeware and browser hijacker, etc. 4. It monitors users’ Internet activity and records specific keywords that the user enters into search fields on various web sites.

Manually Remove Gresim Trojan Horse Virus

Gresim is a tricky Trojan virus which can violate the computer system without your permission and knowledge. It is able to destroy your computer by doing various harmful things inside. Even worse, this Trojan is a utility used by the cyber criminals to launch on the computer to get your private information. So it is recommended to remove it as quickly as possible. Follow the steps below to manually get rid of this nasty Trojan horse.

Step1: Restart your computer in safe mode with networking.
Turn on the power of your computer, press "F8" key continuously before windows starts up. Then, you will see Windows Advanced Option menu. Use the Up-Down arrow keys on your keyboard to highlight "Safe Mode with Networking" option from the list and hit "Enter" key to go on.
Step 2: End relevant Process
Keep pressing CTRL + Shift + ESC keys together to launch Windows Task Manager. Press its Processes tab, find out and click End Process button block the processes related to this Trojan virus.
[Random.exe]
Step3: Delete Gresim files from PC:
Navigate to directory and delete all related files below:
%windows%\system32\ Gresim
%documents and settings%\all users\ application data\ Gresim
%program files% Gresim
%Desktopdir%\Gresim.lnk
%AllUsersProfile%\{random}\
%AllUsersProfile%\{random}.lnk
Step 4: Delete registry entries from Redistry Editor
Pressing "Windows+R" keys at the same time to bring up run command box. Type "regedit" into the run box and click "Ok" button to continue. If your operating system is win7, just type “regedit” into the "Search programs and files" box in the Start menu. Remove registry keys added by Gresim in Registry Editor
Microsoft\Windows\CurrentVersion\Internet Settings\{ Gresim }
HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisallowRun
HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run Regedit32
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\Current\Winlogon\”Shell” = “{random}.exe”
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\ DisplayName Gresim virus
Note:Of course, it's highly recommended that you should remove trojan horse in a professional way if there are sill some similar problems with your computer.

All in all, Gresim is a rampant computer infection that spreads via network. It has brought great damage to some PC users. Most users don’t even know where and how it comes, let alone knowing how to kill this infection. The virus can invade the computer in many ways. It can be distributed via malicious websites, strange email attachments and dubious pop-ups or freeware/files. What is worse, the cyber criminals are able to remotely monitor your computer. All the valuable information stored on the computer may b stolen by them. So, you’d better get rid of the malicious Trojan virus promptly. Furthermore, it's rather necessary for you to use a professional malware removal tool to get away from all the malware.