I recently got a malicious "something" on my comp that was running scripts to change my prefrences, Such as Search Page, StartPage, and adding links to my favorites. The file was called sb.hta and to fix it I had to go edit my autoexe.bat file and place this code into it.
@ECHO Y| ATTRIB -H -S -R C:\WINDOWS\STARTM~1\PROGRAMS\STARTUP\*.*
@ECHO Y| DEL C:\WINDOWS\STARTM~1\PROGRAMS\STARTUP\*.HTA
It seems to be working very well.
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