Security Tool is a rogue antivirus scam, using generic name for disguise. Together with Cyber Security, they are hitting computers hard and forcing users into buying their “full” versions to remove non-existing virus infections. Typically, Security tool states that one’s PC is infected with Spyware.IEMonster or similar parasites, however, the real infections are very different.
The main problem with Security tool and alike is that they prohibit most of downloads and render computer unusable. However, there is a way to remove it.
Check if you can access your Task Manager and Regedit. Task manager can be accessed by pressing ctrl+alt+del and choosing it from menu. regedit is accessed by simply running it.
If you can not access task manager, but you can access regedit, search for TaskMgr entry in registry (using regedit) and delete it. This should reenable task manager.
Alternatively, you can download process explorer (you might need to rename it to iexplorer.exe or iexplorer.bat for launching) . Also, you might need to download it to another PC and bring it using USB drive
If you can launch process explorer or task manager, do it. If not, go to Step 3.
Now you need to kill the processes blocking downloads. Typically, it is run under your username, and not under system user. Search for processes named with random numbers or unknown applications. And stop them. Note down the process names ( you will need these in step 4).
Now you need to check if there are additional blocks to visit other websites. This includes : disabling all proxy servers on your internet explorer or firefox browser, checking your hosts files ( it should be nearly empty, no known sites except localhost).
If you choose manual removal, delete the files you have stopped in step 2 ( with random numbers in name). Also, modify registry and delete all keys mentioning these names.
Reboot and check if everything is ok. If not, repeat steps 2-4 And scan with antispyware you havent scanned. Superantispyware would be my choice nr2, but malwarebytes anti-malware will work too.