Is Isearch.babylon.com Virus?
Isearch.babylon.com is an accessory of Babylon translation tool. It is no more than a traffic exchanging site to intercept traffic and help promote its translation products. Usually speaking, downloading and installing relevant products or third-party programs would result in Isearch.babylon.com hijacking. It is not technically a virus though it employs rogue deeds such as replacing default homepage and search engine without permission and keeping directing people to commercial sites.
Reasons of Isearch.babylon.com Resisting Automatic Removal
Security utilities are created to detect and remove infections by finding malicious attribute code. Since Isearch.babylon.com is not a virus at all, anti-virus programs are not able to help remove it automatically even though it is hijacking browsers and causing problems: