I am running Windows XP Pro. I can not get it any software to remove the Trojan (I guess it is a variant of the Vundu, Boaaxe, etc) - windows explorer is very slow , IE runs slow etc. I ran Malwarebytes which detects the Trojan and tries to delete on reboot - however this is unsuccessful. I tried removing Browsel.dll which runs constantly via regedit (delete keys) and also deleting the windows\system32\browsel.dll file using other delete tools unsuccessfully. On reboot these keys and the Browsel.dll file is back. I have run Malwarebytes full scan, quick scan etc multiple times unsuccessfully. Am out of options (have tried just about everything out there from a Trojan killer software). I do not have the option of booting up the laptop from cd/usb to a separate OS and then deleting the file on the c: drive since my harddrive is encrypted. Any suggestions would be appreciated. Latest quickscan log Malwarebytes' Anti-Malware 1.33 Database version: 1688 Windows 5.1.2600 Service Pack 2 1/24/2009 3:12:18 PM mbam-log-2009-01-24 (15-12-10).txt Scan type: Quick Scan Objects scanned: 62408 Time elapsed: 15 minute(s), 39 second(s) Memory Processes Infected: 0 Memory Modules Infected: 0 Registry Keys Infected: 2 Registry Values Infected: 4 Registry Data Items Infected: 0 Folders Infected: 0 Files Infected: 1 Memory Processes Infected: (No malicious items detected) Memory Modules Infected: (No malicious items detected) Registry Keys Infected: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{3b47d580-72d8-4083-8881-38881cd40cfb} (Trojan.BHO.H) -> No action taken. HKEY_CLASSES_ROOT\CLSID\{3b47d580-72d8-4083-8881-38881cd40cfb} (Trojan.BHO.H) -> No action taken. Registry Values Infected: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\bf (Trojan.Agent) -> No action taken. HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\bk (Trojan.Agent) -> No action taken. HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\iu (Trojan.Agent) -> No action taken. HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\mu (Trojan.Agent) -> No action taken. Registry Data Items Infected: (No malicious items detected) Folders Infected: (No malicious items detected) Files Infected: C:\WINDOWS\system32\browsel.dll (Trojan.BHO.H) -> No action taken.