It's a shame when a virus gets into your computer. And no less annoying to find out that from your IP-address, no one knows who sends spam to the right and to the left. Such precedents are a consequence of the action of malicious programs, the growth and improvement of which the creators of modern antiviruses cannot keep up with. But you can still find and delete them yourself.
Viruses secretly install themselves into the system using special camouflage methods, and just as secretly conduct their malicious activities. Sometimes it is possible to fix the fact of infection only by indirect signs. After realizing that your computer is infected, the first thing to do is go to your FTP client and check all the data you have posted. If you find extraneous files that you did not download, delete them.
The next is to search for malicious codes embedded in your computer's scripts. At this stage, do not search for viruses manually, it is pointless, as well as looking for a needle in a haystack. Find the appropriate software you need on the Internet. Today, many companies offer their services for cleaning the site from viruses. The operation of these antivirus systems is very similar to the operation of antivirus programs on a computer. After downloading the selected program, completely scan your computer for viruses. The program will give you the addresses of malicious explicit or suspicious scripts and offer you a choice: remove them automatically, or you want to do it yourself. Choose automatic removal if only you are absolutely sure that these scripts are really malicious, otherwise you risk getting an unstable computer system, and perhaps not even working at all.
Now about the removal of new types of viruses that appeared several years ago. These are the so-called ever-hanging ransomware banners, in which you need to send a couple of SMS to a specific number. To remove them, contact a special service, it is on the website of any company that creates antivirus programs, and you will be helped to unblock the browser and remove this opportunity. To do this, it is enough to indicate in a special window the ransomware number and the text of the SMS message. Next, change the user's Windows password, which is required when logging into the computer. This is necessary to protect yourself in the future.