There was a problem - some application is constantly trying to connect to specific IP addresses.
Checking through http://ip-whois.net/ shows that there is nothing there (no sites / domains). Lock through the HOSTS file does not work.
Is it possible to block these addresses or find out what kind of process is trying to send some data?
System - Windows XP SP3 , antivirus - AVAST, firewall - NETLIMITER .
It is also worth Malwarebytes Anti-Malware , which shows the blocking of the address to the malicious site every 2-3 seconds. But I can not find it in the logs, which indicates the program / process that is trying to do it.
Maybe someone will tell you how to properly configure AVAST / NETLIMITER to block outgoing connections or a way to catch this process / program?