
A Infects Fixed Disk Partition Table-A-------------------+
9 Infects Fixed Disk Boot Sector-----9-----------------+ |
8 Infects Floppy Diskette Boot-------8---------------+ | |
7 Infects Overlay Files--------------7-------------+ | | |
6 Infects EXE Files------------------6-----------+ | | | |
5 Infects COM files------------------5---------+ | | | | |
4 Infects COMMAND.COM----------------4-------+ | | | | | |
3 Virus Installs Self in Memory------3-----+ | | | | | | |
2 Virus Uses Self-Encryption---------2---+ | | | | | | | |
1 Virus Uses STEALTH Techniques------1-+ | | | | | | | | |
                                       | | | | | | | | | | Increase in
                                       | | | | | | | | | |  Infected
                                       | | | | | | | | | |  Program's
                                       | | | | | | | | | |    Size
                                       1 2 3 4 5 6 7 8 9 A      |
                                       | | | | | | | | | |      |
Virus                   Disinfector    V V V V V V V V V V      V     Damage
-----------------------------------------------------------------------------
Grog v3.1                              x x x x x . . . . .    1200    P O
-----------------------------------------------------------------------------


LEGEND:

Size Increase:
N/A        - Virus does not attach to files.
None       - Virus does not change file size (attaches to tag end of file)
Overwrites - Virus overwrites beginning of file no file size change
All Others - The length in bytes by which a file will increase when infect

Damage Fields:
B - Corrupts or overwrites the boot sector
D - Corrupts data files
F - Formats or overwrites all/part of disk
L - Directly or indirectly corrupts file linkage
O - Affects system run-time operation
P - Corrupts program or overlay files

Characteristics:
x - Yes
. - No
