Virus Database

AEP.626

Description AEP.626

It's a harmless memory resident parasitic virus. It hooks INT 21h and writes itself at the beginning of .COM-files that are executed. It contains the internal text string:
(C) 1993 American Eagle Publications, Inc., All rights reserved!

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Andromeda

Description Andromeda

These are dangerous memory resident parasitic viruses. They hook INT 21h and write themselves to the end of COM (except COMMAND.COM) and EXE files. In some cases they erase the disk sectors. The viruses contain the text strings:
"ANDROMEDA.758": [ANDROMEDA V1.1] BUDAPEST HUNGARY
"ANDROMEDA.800": ANDROMEDA*ICE*BUDAPEST
"ANDROMEDA.1024.a": AXE
"ANDROMEDA.1024.b": ANDROMEDA V3.0 BUDAPEST (Szegedi Imrének:
Ha mi nem lennénk, miböl élnél?)
"ANDROMEDA.1024.c": ANDROMEDA V3.0
"ANDROMEDA.1536.a": ROF OKI OOT CAN AND RBOGEMAND
"ANDROMEDA.1536.b": ROF OKI OOT CAN AND RBO GEM
ANDROMEDA V3.2 HUNGARY
"Plus.1337": ANDROMEDA/plus BUDAPEST 1991

ANDROMEDA.725,758
These viruses write themselves to the end of .COM files. They search for the files to infect them when any program is executed. While infecting, these viruses uses FCB Read/Write functions.
"ANDROMEDA.725" also hooks INT 9. Some time after installation it reboots the computer.
On October, 5th "ANDROMEDA.758" erases the FAT of the A: drive.
ANDROMEDA.800
Depending on the system date it hooks INT 1Ch. Some time after it displays random data and halts the PC.
ANDROMEDA.1024.a
It also hooks INT 09h. On execution of any file this virus searches for the first .EXE file of the current directory and writes itself to the end of the file. Depending on its internal counter this virus reboots the computer.
ANDROMEDA.1536.a,b
Sometimes they also hook INT 9h and some time after that reboot the computer. They contain the code of the disk erasing routine, but that routine never receives the control in "ANDROMEDA.1536.b".
ANDROMEDA.Plus
It also hooks INT 13h and while reading from disk boot sectors and the MBR of the hard drive puts the image of boot virus "Stoned" to the data buffer . As result: 1) Anti-virus scanners detect this virus on disks, but fail to disinfect it, because there is no "Stoned" virus in real. 2) The backup copies will contain infected disk images, and while restoring a disk from backup the virus will be placed to real disk sector. 3) While copying "sector-to-sector" (by DISKCOPY, for example) the virus will infect the destination disk.

Andromeda.1140

Description Andromeda.1140

It is a dangerous nonmemory resident encrypted parasitic virus. It searches for .COM files (except COMMAND.COM) and writes itself to the beginning of the file. It contains the internal text strings:
-< The Andromeda Strain >- Version 1.00 By : Crypt Keeper
Mission Completeall Have fun with your virus(es)
ANDROM.SEC *.COM
RUNME.COM COMMAND.COM
SCAN.EXE CLEAN.EXE NAV.EXE NAV_._NO

The first and the second strings are displayed when the virus creates the file RUNME.COM and executes it, the last string contains the names of the files which are deleted by the virus when the virus is executed.

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