Virus Database

Logen.1150

Description Logen.1150

Logen is a dangerous non-memory resident parasitic virus. It searches for EXE files in the current directory, then writes itself to the end of any EXE files. On Sunday the virus displays messages and erases sectors on the hard drive. The virus contains the following text string:
Nihilism [Part II - Feelings]
Elena Zolotopup ya lublu teba bolshe cem zhizn
Wanna have some fun with me, cutie? [Y|N]:
F*CK YOU! USE YOUR FINGERS WHILE YAR HDD
IS BEING FORMATTED! :))) See ya soon!
I seeallYou are too dumb to play with me...
So then just...FUUUUCCCCKKKK OFFFFFFFFF!
Coded by [LoGen]

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Niko.3477

Description Niko.3477

It is a very dangerous memory resident parasitic virus. It traces and hooks INT 21h, hooks INT 3 (debugger), then it stays memory resident and writes itself to the end of COM and EXE files that are executed or opened. The virus if stuffed with anti-debugging tricks that cover more than 50% of the virus code.
Depending on the system timer the virus corrupts the data that is saved on disk (DOS call Write INT 21h, AH=40h). While creating a .AS* or .DB* file the virus depending on the system time corrupts it or creates a subdirectory with the same name. When any file is executed or opened, the virus calculates the CRC sum of its code, and the CRC is not correct, the virus "shakes" the screen, decrypts and displays the message and halts the computer. The message is:
FUCK YOU

Under debugger or depending on the system time the virus also calls the same effect but displays another message:
No viruses

The virus also contains the encrypted text strings in Russian and:
Oct(123,123,126) by one of student

Nina.256.a

Description Nina.256.a

Nina.256
These are harmless memory resident parasitic viruses. They hook INT 21h and write themselves to the beginning of COM files that are executed. They contain the text strings:
"Nina.256.a,b": Nina
"Nina.256.c": RIOT!

Nina.1560,1600,1614
These are dangerous memory resident parasitic viruses. The viruses activate their routines only if there is no anti-virus monitor in the system memory, hooks INT 21h and then search for .COM, .EXE and .SYS files in the current directory and write themselves to the end of file.
Under debugger "Nina.1600" destroys the data on the disk. This virus contains the strings:
Dear Nina, you make me write this virus; Happy new year!
*:COMMAND.COM

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