A free Microsoft security solution designed to tackle only specific malicious code examples has been updated to take on a worm with botnet building capabilities. The February 2010 refresh of the Malicious Software Removal Tool, coinciding with this month’s security bulletin releases
which patched 26 vulnerabilities across Windows and Office, is not capable of detecting and removing infections produced by Win32/Pushbot. Win32/Pushbot is a bot family that can compromise machines and allow attackers to take over infected PCs
which they can control through IRC.