W32/Conficker.worm exploits the MS08-067 vulnerability in Microsoft Windows Server Service. If the vulnerability is successfully exploited, it could allow remote code execution when file sharing is enabled. Machines should be patched and rebooted to clean the system, then rebooted again to prevent reinfection.
McAfee has developed a utility that will assess for the presence of the Conficker worm and identify which systems are already infected. We recommend that you download the McAfee Conficker Detection Tool now.