Adware:Adware (or spyware) is a small program that is designed to show advertisements (in various form and degrees of intrusiveness) on your computer. It often reports personal information back to its owners. As a result your sense of privacy can be violated.
Worm.Zlybot is a malicious worm that propagates through computer networks by exploiting security holes on computers connected to the Internet. Once executed, Worm.Zlybot will send its copies to all email addresses that it can find on your PC. Worm.Zlybot has the ability to install additional malicious software and this may cause computer system instabilities.
Technical details (How to remove Worm.Zlybot(pop up))