T-Rex.1800 is a DOS memory-resident virus.
It infects ".COM" and ".EXE" files. However, this virus does not infect "COMMAND.COM" and files with the text string WIN and F-PROT in it.
T-Rex.1800 is a DOS memo..
VBS.io is a Trojan Horse script virus. It cannot spread itself and is created and run by PHP.io.
It overwrites '.sys', '.dll', '.ocx', and '.drv' files in C:WindowsSystem. These infected files cannot be recovered.