Alia.1023
Description Alia.1023
It is a harmless memory resident parasitic polymorphic virus. It hooks INT 21h and writes itself to the end of EXE files that are executed or opened. The virus contains the internal text string:
~ALIA~
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Doomsday.715
Description Doomsday.715
These are not memory resident dangerous encrypted parasitic viruses which search for a .COM-files of a current directory and infect them by a standard manner. They contain the texts:
*.com
A scion to none
Certainly no fun
Total destruction when done
Introducing DOOMSDAY ONE
Written in Orlando, FL on 05/13/91
Sometimes they encrypt the contents of the logical sectors of the current disk and type:
Your disk is dead!
Long live DOOMSDAY 1.0
Doperland.490
Description Doperland.490
It is not a dangerous memory resident parasitic virus. It copies itself into Interrupt Vectors Table, hooks INT 21h and writes itself to the end of COM-files that are executed. While terminating of the files the virus hits the C:COMMAND.COM file. On December, 25th the virus displays the message:
Happy Birthday Doperland!!!
The virus also contains the text strings:
c:command.com
Trif
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