It's definitely a Hijacker.
http://www3.ca.com/securityadvisor/pest/br...=I&cat=Hijacker
Quote
ISTbar.Slotch
Overview
Category
Hijacker : Any software that resets your browser's settings to point to other sites. Hijacks may reroute your info and address requests through an unseen site, capturing that info. In such hijacks, your browser may behave normally, but be slower.
Origins
Group
Integrated Search Technologies
Others By This Group
ISTbar· ISTbar.AUpdate· ISTbar.CSearch· ISTbar.MCInstL· ISTbar.MSCache· ISTbar.XXXToolbar· Slotch.com· ToolbarCash.com· TrojanDownloader.Win32.IstBar.aj· TrojanDownloader.Win32.IstBar.ap· TrojanDownloader.Win32.IstBar.bm· TrojanDownloader.Win32.IstBar.bp· TrojanDownloader.Win32.Istbar.bu· TrojanDownloader.Win32.Istbar.dh· TrojanDownloader.Win32.Istbar.dr· TrojanDownloader.Win32.IstBar.i· XXXToolBar· XXXToolBar.com·
Date of Origin
October, 2004
Operation
Browser Performance
Likely to slow performance of Internet Explorer.
As
cows said, you should submit a HJT log, to the HJT forum.
Download the latest version of HijackThis (HJT), from
here.
Put HijackThis in a Permanent folder:
Click My Computer / C: / File / New / Folder / name the folder; HijackThis
Put
HijackThis.exe, in this folder.
This is a
mandatory step, for the backup and restore functions, of HijackThis, to be able to work.
Read the pinned post in the HJT forum,
here
Then, run a log, and post it in the HJT forum,
at this link.
Do not, fix anything, yet.
A member, of the HJT Team, will help you out.
Please, be patient, these people are volunteers. They will help you out, as soon as possible.