Close all (browser) windows & rescan with hijackthis. When the scan is finished place a check in the box to the left of the following entries & click 'fix checked' :
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://easy-search.biz
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://easy-search.biz
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://easy-search.biz
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://easy-search.biz
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://easy-search.biz
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://easy-search.biz
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = http://easy-search.biz
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://easy-search.biz
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://easy-search.biz
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page_bak = about:blank
O2 - BHO: (no name) - {06DC8555-5ABC-9BA4-31FD-40471E8DF439} - C:\WINDOWS\System32\ytackyaz.dll
O2 - BHO: (no name) - {5433CF54-F499-280B-5EBF-DC831BEABC2C} - C:\WINDOWS\System32\pdrtrlny.dll
O2 - BHO: (no name) - {F1B7E4E2-0CCA-434F-C175-1A8625853D94} - C:\WINDOWS\System32\ohmtptay.dll
O3 - Toolbar: (no name) - {2CDE1A7D-A478-4291-BF31-E1B4C16F92EB} - (no file)
O3 - Toolbar: (no name) - {1C78AB3F-A857-482e-80C0-3A1E5238A565} - (no file)
O4 - HKLM\..\Run: [lkdhsmedlsvfn] C:\WINDOWS\System32\suxiagp.exe
O4 - HKCU\..\Run: [runwin32] C:\WINDOWS\runwin32.exe
O8 - Extra context menu item: &iSearch The Web - res://C:\WINDOWS\System32\toolbar.dll/SEARCH.HTML
O16 - DPF: {1C78AB3F-A857-482E-80C0-3A1E5238A565} - file://C:\install.cab
Reboot into safe mode following the instructions here & navigate to & delete the following if found:
C:\WINDOWS\System32\suxiagp.exe< file
C:\WINDOWS\runwin32.exe< file
Reboot normally.
Launch Notepad, and copy/paste the bold below into a new text file. Save it as URLRepair.reg (Change the 'Save As Type' to 'All Files'). Save it in C:\
REGEDIT4
[-HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\URLSearchHooks]
[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\URLSearchHooks]
"{CFBFAE00-17A6-11D0-99CB-00C04FD64497}"=""
Locate it (in C:\) and double-click on it (launch it). You'll recieve a prompt similar to: "Do you wish to merge the information into the registry?". Answer yes and wait for a message to appear similar to "Merged Successfully".
Download Registrar Lite from here:
http://www.resplendence.com/download/reglite.exe
Put it in its own folder. You may want to keep this program. It is an excellent free, registry editor.
Copy and paste the follow text into the address bar, then hit 'Go':
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\URLSearchHooks
In the pane on the right are the values associated with that key.
We want to remove this one>
_{1C78AB3F-A857-482e-80C0-3A1E5238A565}
Notice the underscore at the start.
Right click on it and select delete.
If you get a confirmation question, respond OK then close out of the program.
Post a new log when all the above is done plz.
If easy search comes back you may have to delete the entries in safe mode.