Quoted from this page. Check it out.
http://www.spywareinfo.com/~merijn/cwschronicles.html
The new version of the shredder tool should find it.
Variant 12: CWS.Svcinit - Sneaky little fellow
Approx date first sighted: September 10, 2003
Log reference: ?
Symptoms: Homepage changed to xwebsearch.biz and '
http:///', hijack
returning on reboot or even sooner.
Cleverness: 9/10
Manual removal difficulty: Involves lots of Registry editing, ini file
editing and a process killer.
Identifying lines in HijackThis log:
Running processes:
C:\WINDOWS\System32\SVCINIT.EXE
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar =
http:///
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page =
http:///
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page =
http:////
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page =
http://xwebsearch.biz
F1 - win.ini: run=C:\WINDOWS\svcinit.exe
O4 - HKLM\..\RunServices: [SVC Service] C:\WINDOWS\SYSTEM\svcinit.exe
O4 - HKLM\..\Run: [mssys] C:\WINDOWS\mssys.exe