MMCA.505
Description MMCA.505
These are memory resident parasitic viruses. They hook INT 21h and infect COM and EXE files that are executed. They contain texts in Russian.
MMCA.505,882
These are harmless viruses, they do not manifest themselves in any way. They write themselves to the end of COM and EXE files.
MMCA.1131
It is encrypted virus. It writes itself into the middle of COM and EXE files. The virus has a bug, and it can halt the system while infecting a file, or corrupt the file.
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Maripuri.1942
Description Maripuri.1942
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 *.*
Mark13.782
Description Mark13.782
It is a dangerous memory resident parasitic virus. It hooks INT 21h and on disk access calls searches for *.COM files and writes itself to the end of the file. While installing into the system memory the virus copies its code to the address 9000:0100 without fixing memory allocation blocks, that can halt the system.
The virus contains the text:
MARK13-Review
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