F-Secure BlackLight Rootkit Elimination Technology detects
objects that are hidden from users and security tools and offers
the user an option to remove them. The main purpose is to fight
rootkits and all kinds of malware that use rootkits. The F-Secure
BlackLight Rootkit Elimination Technology works by examining the
system at a deep level. This enables BlackLight to detect objects
that are hidden from the user and security software.
It supports Windows Vista (32-bit only) and Windows 2003 Server x64
Editions only.
Get it from here