Virus Database

S5.1253

Description S5.1253

It is a harmless memory resident parasitic virus. It hooks INT 21h and writes itself to the end of COM files that are executed. It contains the text string: "S5".

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Mgn.2048.a

Description Mgn.2048.a

These are harmless memory resident encrypted parasitic viruses. They were received from Magnitogorsk city (Russia). The viruses hook INT 8, 13h, 21h and write themselves to the end of COM and EXE files that are executed or closed, the COMMAND.COM file is infected by the algorithm of the "Lehigh" virus. The viruses disinfect the infected files that are opened, they also do not infect the files when the Num-Ins-Ctrl keys are pressed at the same time. Therefore the simplest way to cure a computer infected by such viruses is to process by any anti-virus program all COM and EXE files in all directories on all disks having Num-Ins-Ctrl pressed, and then to reboot the computer.
The viruses contain the string "COMMAND". "Mgn.2560.c" replaces the 50h disk type with the 51h in the Partition Table (these disk types are used by Disk Manager utility). "Mgn.2048" hourly "overturn" the screen. "Mgn.2048.b" contains the text:
Shadow & Safe

"Mgn.2560.a,b,c" periodically display:
+--------------------------------------+
ƒ Mr. Lozinsky ! ƒ
ƒ Just read documentation on your ƒ
ƒ AIDSTEST (1-Oct-90 version) we ƒ
ƒ release new virus. Create improved ƒ
ƒ versions of AIDSTEST, please ! ƒ
ƒ(C) TinySoft&Electronics,Inc. 3-Nov-90ƒ
+--------------------------------------+

"Mgn.3000" sets the screen colors to white/blue/red (the colors of Russian national flag).

MGTU.273

Description MGTU.273

This is a dangerous very primitive nonmemory resident parasitic virus. It searches for all .COM files in the current directory, using FCB from PSP, then it writes itself to the end of the file. The virus does not manifests itself in any way. It contains the text in Russian - "This program is written in MGTU by a student of group IU4" (MGTU - Moscow college).

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