ProfitPress Mega CDROM2 …eeware (MSDOS)(1992)(Eng)/ProfitPress-MegaCDROM2.B6I/UTILITY/VIRUS/VIRSIM1.ZIP/SIMUL.DOC

Text File | 1990-10-06 | 9.3 KB | 227 lines

 ╔═══════════════════════════════════════════════════════════════════╗
 ║   Virus Simulation Suite                  Written by Joe Hirst    ║
 ║   British Computer Virus Research Centre     (Tel: [phone])    ║
 ║   12 Guildford Street, Brighton, East Sussex, BN1 3LS, England    ║
 ║                        (Tel: [phone])                          ║
 ║                                                                   ║
 ║             Copyright (c) Joe Hirst 1988, 1989, 1990.             ║
 ╚═══════════════════════════════════════════════════════════════════╝

These programs simulate the visual and aural effects of some of the PC viruses.

They are public service freeware, which means that they are provided as a
public service, and, although the copyright is retained, any person or company
may use them for any legitimate purpose (commercial or otherwise).

The only restrictions are that users may not attempt to alter the programs,
they may not sell them (although this does not preclude a minimal copying fee)
and they may not state or imply that they have any exclusive rights to or
control over the programs.

All of these programs will check their own length before executing, and also
perform a checksum test for corruption.  If either of these tests fails the
program will refuse to execute.

The complete set of programs currently consists of:

    CASC-SIM.COM    Cascade virus (standard activation)
    CSC-SIMX.COM    Cascade virus (display only)
    DDAN-SIM.COM    Devil's Dance virus
    DDN-SIMD.COM    Devil's Dance virus (single shot display)
    DENZ-SIM COM    Denzuk virus (single shot display)
    FUMN-SIM.COM    Jerusalen (2) (Fu Manchu) virus
    FUM-SIMD COM    Jerusalen (2) (Fu Manchu) virus (single shot display)
    FUM-SIMX.COM    Jerusalen (2) (Fu Manchu) virus (censored)
    ITAL-SIM.COM    Italian virus (standard activation)
    ITL-SIMX.COM    Italian virus (display only)
    JERU-SIM.COM    Jerusalem (1) virus
    OROP-SIM.COM    Music virus
    ORO-SIMX.COM    Music virus (minimum delay)
    YANK-SIM.COM    Yankee Doodle virus (standard activation)
    YNK-SIMX.COM    Yankee Doodle virus (tune only)

Many of these programs are TSRs, and in all such cases the program can be
removed from memory by the <ALT><-> key combination.

Some of them have a programmable builtin delay, and these may be called with
a numeric parameter between 1 and 30 inclusive.  This number represents the
delay in minutes before displaying the simulation effect.  If the program is
called without a parameter a delay of one minute is assumed, except for the
program ITL-SIMX where no parameter means no delay.

In many cases the simulation can be switched off, and the delay reset,
by the <ALT><+> key combination.  The exception is the program ITL-SIMX when
called without a parameter: in this case the <ALT><+> key combination toggles
the display.

Please note that the <+> & <-> refer to the grey keys right of the numeric
key pad.

As some machines do not have these keys, the alternate key combinations of
<ALT><Ins> instead of <ALT><+> and <ALT><Del> instead of <ALT><-> may be used.

There will be no display on some machines - this will normally suggest that
the virus itself would not display on that particular machine.  The Devil's
Dance programs are an exception to this as some errors in the virus code
have been corrected in the simulations.

            CASC-SIM.COM
        Cascade virus (standard activation)

This program simulates the display of the Cascade virus.  Characters will
fall down the screen until they encounter another character or a change in
the background or foreground colours.

The area of display affected will initially be one column.  This will build
up with successive displays until the full screen is affected.

The delay before the first display will be random with a maximum of five
minutes, and that between displays will be random with a maximum of one
minute.

            CSC-SIMX.COM [n]
        Cascade virus (display only)

This program simulates the display of the Cascade virus, but with a controlled
delay.  Characters will fall down the screen until they encounter another
character or a change in the background or foreground colours.

The area of display affected will be the full-screen.

The delay before the first display, and that between displays, will be equal
to the entered parameter in minutes, or one minute if no parameter is given.

            DDAN-SIM.COM
        Devil's Dance virus

This program simulates the display of the Devil's Dance virus.  From the tenth
keystroke after installation (including release of keys) the display attribute
will change with each input character.

When Ctrl-Alt-Del is pressed a number of messages will be displayed before
reboot.  Some errors in the virus code have been corrected - not all machines
which display the simulation messages will display the messages from the virus.

            DDN-SIMD.COM
        Devil's Dance virus (single shot display)

This program is not a TSR, nor does it accept any parameters.  It displays the
messages produced by the virus when Ctrl-Alt-Del is intercepted without
rebooting the machine.

            DENZ-SIM.COM
        Denzuk virus (single shot display)

This program is not a TSR, nor does it accept any parameters.  It duplicates
the visual display produced by the virus when Ctrl-Alt-Del is intercepted
without rebooting the machine.

            FUMN-SIM.COM
        Jerusalen (2) (Fu Manchu) virus

The virus intercepts the keyboard I/O interrupt, and certain words cause the
addition of comments.  These comments go into the keyboard buffer, not just on
the screen.

The trigger words include "Thatcher", "Botha", "Reagan", "Waldheim" and
"Fu Manchu".  In each case the trigger is the word (or words) followed by a
space.  The other trigger words are the two more explicit four-letter words
(without a space).  Be warned that this simulation, like the virus, uses
explicit language.

Ctrl-Alt-Del is intercepted and produces a message before the machine reboots.

There is no reset with this program.

            FUM-SIMD.COM
        Jerusalen (2) (Fu Manchu) virus (single shot display)

This program is not a TSR, nor does it accept any parameters.  It displays the
message produced by the virus when Ctrl-Alt-Del is intercepted without
rebooting the machine.

            FUM-SIMX.COM
        Jerusalen (2) (Fu Manchu) virus (censored)

This program is exactly as described for FUMN-SIM.COM, except that the two
four-letter words have been censored to "c***" and "f***", both on input and
output.

This version is intended for public demonstrations where it is felt that the
full-blooded version would be inappropriate.

            ITAL-SIM.COM
        Italian virus (standard activation)

This program simulates the display of the Italian virus, which is a single
character "bouncing ball".

The display will only activate under the same condition as the real virus,
which is a disk access during a one second time "window" occurring every half
hour.  "Reset" will switch off the display again until the next such
activation.

            ITL-SIMX.COM [n]
        Italian virus (display only)

This program simulates the display of the Italian virus, which is a single
character "bouncing ball".

If called with a parameter there will be a delay before the display is
activated equal to the parameter in minutes.  Reset will switch off the
display until this same delay has elapsed again.

If called without a parameter the display will appear immediately, and reset
will switch the display on and off

            JERU-SIM.COM [n]
        Jerusalem virus

This program simulates Jerusalem virus.  After the initial delay a portion
of the screen (from row 5 column 5 to row 16 column 16) will be scrolled up
two lines, creating a small black gap in the display.  At this time a time
wasting loop will be activated, and the processor will appear to be slowed
down.  Reset will switch off the slow-down effect, and re-institute the delay.

If called with a parameter there will be a delay before the display is
activated equal to the parameter in minutes.  If called without a parameter,
the delay will be one minute.  Reset will switch off the display until this
same delay has elapsed again.

            OROP-SIM.COM
        Music virus

This program simulates the audible effect of the Music virus.  After an initial
delay of five minutes it will start playing its cycle of three tunes, with a
seven minute delay between tunes.

This will continue until the machine is re-booted, or the program is removed
from memory.

            ORO-SIMX.COM
        Music virus (minimum delay)

This program simulates the audible effect of the Music virus.  The simulation
is the same as OROP-SIM, above, except that the five and seven minute delays
have been changed to one second and half a minute respectively.

            YANK-SIM.COM
        Yankee Doodle virus (standard activation)

This program simulates the audible effect of the Yankee Doodle virus, which
is the tune "Yankee Doodle".

The tune will only activate under the same condition as the real virus,
which is at approximately 17.00 hours (five p.m.).

            YNK-SIMX.COM [n]
        Yankee Doodle virus (tune only)

This program simulates the audible effect of the Yankee Doodle virus, which
is the tune "Yankee Doodle".

If called with a parameter there will be a delay before the tune is activated
equal to the parameter in minutes.  If called without a parameter, the delay
will be one minute.