Clock
Description Clock
This is a dangerous virus which infects the Boot-sector on floppy disks during access to them and MBR of hard disk on a reboot from an infected floppy. Depending on its internal counter the infector reboots the computer, also changes the setup of the hard disk (not in the CMOS but in the memory of the hard disk controller when it is possible). "Clock" also hooks INT 8, 13h.
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Planters.360
Description Planters.360
It is a dangerous memory resident parasitic virus. It hooks INT 1Ch, 21h and overwrites .COM and .EXE files that are accessed with Get/Set File Attribute (AH=43h) DOS function (DOS command ATTRIB). Depending on its internal counter the virus decrypts and displays the message:
When you think of nuts,
you think of PLANTERS!
Platov Family
Description Platov Family
These are very dangerous memory resident parasitic partly encrypted viruses. They copy themselves to the address 9800:0000h, and hook INT 8, 17h, 21h. While executing the viruses search for COM files of the current directory (except COMMAND.COM) and write themselves to the end of the file.
Depending on the system date the viruses delete the files that are executed, reboot the computer, change the symbols that are printed.
While selecting the A: drive the viruses display the message in Russian "Don't use floppy disks! There may be the viruses!" and erase the floppy disk sectors.
While selecting the GAMES or ANT subdirectories the viruses display the messages in Russian about computer games.
The viruses also contain the text strings:
Access Denied Software presents
The PC Virus
Programmed by Andrey Platov 15 years old on 09.07.1992
Hello to Igan, Pershin
gamesantCOMMAND*.COM
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