Almost all anti-virus software developers have already released specific tools for detecting and removing latest threat Conficker worm. MacAfee has offers a special build, standalone cleaning tool called Stinger for removing Conficker worm (Downadup, Kido, etc) from an infected system. As it is available on a daily updated basis to include any undetected Conficker variants, this free tool is able to detect and remove all known W32/Conficker variants to date.

As W32/Conficker worm is considered to be critical and its authors are always trying to improve it by adding new functionality and anti-debugging tricks, it is highly recommended to scan your system using the latest release of Stinger.

You can download the latest update of Stinger from the Avert Tools site. After download, run the tool, no installation required.

Before scanning the system, from the preference tab, set scanning sensitivity level to high or low, scanning targets (processes and boot sector) and choose delete, report or repair on virus detection and click ok to save. (Via). More security related articles here.