It is a very dangerous nonmemory resident parasitic virus. It searches for EXE files in subdirectory tree, and writes itself to the end of the file. If there are no EXE files, the virus erases CMOS, FAT of C: drive, and overwrites MBR of the hard drive with the program that displays the message:
Virus MARIPURI 1.0
By FredSoft C.O.
Made in Spain, IV-1.992
The virus also contains the string:
*.EXE *.COM *.*
