Oropax
Description Oropax
This is not a dangerous memory resident parasitic virus. It hooks INT 8, 20h, 12h, 27h. The virus writes itself to the end of .COM files. Being executed it searches for the files, then stays memory resident and infects the files that are accessed. The virus manifests itself by playing a tune.
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HoChiMinh
Description HoChiMinh
It is not a dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the end of COM and EXE files. Three hours after installing into the memory the virus displays the message:
This playgame was writen by Nguyen The Quang, Nacentra Co.
101 - Hai Ba Trung, St.1 - Ho Chi Minh City, Phone: 96282
Press any key to Continue!
Holera_II.1488
Description Holera_II.1488
It is a very dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the beginning of .COM and to the end of .EXE files that are accessed by FindFirst/Next DOS functions (DIR command). The virus checks the file name and does not infect the files COMMAND.COM and NCMAIN.EXE. The virus overwrites the .TXT and .CPP files with the text in Russian. The virus also contains the text strings:
HOLERA II
COMMAND.COM NCMAIN.EXE EXE COM TXT CPP
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