Virus Database

Win98.Matyas

Description Win98.Matyas

This is a primitive, non-memory resident parasitic virus. It searches PE EXE files in the current directory, then writes itself to the end of the file. While spreading, the virus uses direct calls to the Windows kernel by using hardcoded addresses. These addresses are valid only in the Win98 standard edition. As a result, the virus is not able to spread under other Win32 versions. Being run under non-Win98, the virus causes a standard "error in application" message.
The virus does not manifest itself in any way. It contains the text string:
Màtyàs Corvinus kezdettall

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Mask.2389

Description Mask.2389

It is not a dangerous memory resident encrypted parasitic virus. It hooks INT 21h and writes itself to the end of COM and EXE files that are executed. Depending on the current video mode and the system timer the virus manifest itself by a video "noise", it turns the screen to the video mode and displays random data. On December 30 and 31 the virus displays the message and waits for ENTER key:
*
/| Happy New Year, buddy !
//|///|\ Yours truly
////|\\ The Mask 2
/////|\\|

On April 1st the virus seeks by hard drive heads (simulates formatting, but does not format disk) and displays the messages:
System diagnostic failure: cylinder #1 of your hard disk is cracked.
There is a peril of hard disk explosion.
Only an immediate formatting can help.
Confirm format now [Y/N]?
Wrong. Your hard disk NEEDS to be formatted.
Say GOOD BYE to all data on your hard disk !
Start formatting all
Format complete.
Peril of explosion is not over. Next several weeks be very careful:
if you will hear suspicious noise inside computer, immediately rush down
to the floor, quickly crawl to phone and call for rescue rangers (911).
Relax ! It's a joke. Your hard disk is OK.
Video signal lost. Some device causes strong interference.
Please reorient or relocate your computer or consult
experienced technician for help.
Press the ENTER key.

The virus also contains the texts:
<< The Mask 2. Dedicated to Mrs Marina - the Wonderfulest Woman I ever met. >>

Massive.386

Description Massive.386

It is a harmless memory resident parasitic virus. It hooks INT 21h and writes itself to the end of COM files that are executed. The virus does not manifest itself in any way. It contains the text strings:
Massive Alliance
by United Nations Special Agent Mack Banner

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