System Tool or SystemTool is a rogue anti-spyware program that’s distributed via a Trojan and/or web pop-ups. The program is installed without the users knowledge. Once installed, the user will be alerted with false threats on the computer. In order to remove these false threats, the user will have to pay for a full license of the software. The program is also a browser hijacker that changes browser settings. The program will prevent a user from accessing other programs on the computer such as; security programs, task manager, registry editor and even system restore.

Instructions on Removing System Tool 2011

If you are infected by the Security Tool or System Tool, I have included 6 steps on how to remove this Rogue Security Program.

Tools needed

MalwareBytes – AntiMalware is a malware removal program.
RKill is a program developed at that kills processes related to Security Tool.
hosts-perm.bat – System Tool changes the permissions of the HOSTS file so you can’t edit or delete it.

How to Remove System Tool or Security Tool

  1. Download MalwareBytes to your desktop and rename it to Explorer.exe as Security Tool blocks the program named MalwareBytes. If you can’t download files, try using another machine that’s not infected and saving the files to a flash drive or other storage device.
  2. Reboot your PC and hit F8 to run your computer in Safe Mode with Networking.
  3. Run RKILL to stop all background processes related to Security Tool.
  4. Launch MalwareBytes and run a (Full Scan) to remove infections.
  5. Delete the file called “Hosts” in C:\Windows\System32\Drivers\etc\HOSTS and add the default Hosts file (below) for your operating system in C:\Windows\System32\Drivers\etc\
  6. a.      Windows XP HOSTS File Download Link
    b.      Windows 7 HOSTS File Download Link

  7. Reboot your computer.

Your computer should be clean and working normal again.

For more detailed instructions, visit

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