Trojan.Noboot
Description Trojan.Noboot
This Trojan is a DOS COM file written in Assembler
When launched, the Trojan writes a component, which when launched will cause the computer to freeze, to the file C:No-Boot.com. It also writes the string
No-Boot
to the end of the file c:autoexec.bat.
Once the computer is rebooted, it will freeze.
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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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