Trend Micro RootkitBuster is described as 'Scan for hidden files, registry entries, processes, services, drivers, kernel code patches, ports, operating system service hooks, and Master Boot Record (MBR) rootkits. Clean or remove hidden files, registry entries, and services' and is an app in the Security & Privacy category. There are three alternatives to Trend Micro RootkitBuster for Windows, Linux and Online / Web-based. The best alternative is Chkrootkit, which is both free and Open Source. Other great apps like Trend Micro RootkitBuster are GMER (Free) and RootkitRevealer (Free).
Chkrootkit is a Linux tool to locally check for signs of a rootkit. It contains: - chkrootkit: shell script that checks system binaries for rootkit modification. - ifpromisc.c: checks if the interface is in promiscuous mode. - chklastlog.c: checks for lastlog deletions.
RootkitRevealer is an advanced rootkit detection utility. It runs on Windows NT 4 and higher and its output lists Registry and file system API discrepancies that may indicate the presence of a user-mode or kernel-mode rootkit.