Farbar Recovery Scan Tool, or FRST, is a portable application designed to diagnose malware issues.It is also possible to run FRST in the Windows Recovery Environment in order to diagnose and fix boot issues.Farbar Recovery Scan Tool will display detailed information about the Windows Registry loading points, services, driver services, Netsvcs entries, known DLLs, drives, and partition specifications. It will also list some important system files that could be patched by malware.