BAT.Vr.718
Description BAT.Vr.718
It is a harmless nonmemory resident parasitic batch virus. It searches for BAT files, then writes itself to the end of the file and inserts in the beginning of file a jump command and label. When an infected file is executed, the virus gets control, infects other batch files, returns control the host file, and terminates.
Before infection After infection
+--------+ +--------+
| Host | | jump |-+
| file | |--------| |
| | +>| | |
| | | | | |
+--------+ | | | |
| |--------|<+
+-| Virus |-+
| | |
+--------+<+
The virus is named after the labels in its code - they begin with letters 'Vr'.
The virus does not manifest itself in any way.
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AWVCK.182
Description AWVCK.182
This is a very dangerous nonmemory resident overwriting virus. It searches for EXE and INI files, then overwrites them, displays the message and returns to DOS:
This program requires Microsoft Windows
The viruses also contain the text strings:
Innocent
*.ini *.exe
Frisk is a lamer!-Virus [AWVCK 1.01-94]
Axe.884
Description Axe.884
This is an encrypted virus. On September 6th, it erases the MBR of the hard drive, the CMOS and displays the following message:
This is the third virus, and it's auto-encrypted, motherfuckers !
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