Hello, everyone today. We got the hate DOS virus. Now despite the rather scary name, this virus is actually not that bad.
So we'll go ahead and run it...
And we'll see that it infects .COM and .EXE files as they are executed.
So graphics.COM is as always 19,742 bytes when we run it.
*typing*
We see that file size increase to 20,725 bytes. Similarly, we should see the same thing with EXE files...
(how much typing do you do??)
...but I haven't actually tested this, so let's see if it happens.
Okay it does, so the file size once again increases by 984 bytes
Which I believe is the size of the virus around there. Maybe a little bit of padding for that "Hello SNS international" message and
And the virus activates...
Non-destructive, well... pretty annoyingly, but [non-destructively] in may of any year
And type and activates when [effective] [follows] run, but I think we got to restart first so let's do that
So this is the normal [boot] sequence for this 386
Performs a seek test on all three drives. You can't either the hard drive one of course
however, when we run any file infected with the a virus
we get a load of screen Spam and
the lights on the keyboard are going nuts, and
turns to mobile
appears to give us control again
We look around everything seems normal
normal enough anyway
Running infected files does not produce the effect again until a reboot however when we try to reboot
things get real
So here is the new and improved boot sequence courtesy of hate
Where nothing happens?
That doesn't sound right
No, not at all so we get two beeps indicating [that] something is wrong and what it has done has actually cleared the cMos memory
So you need to reconfigure your computer, so we'll hit F2 to go on [a] setup. We'll see what this computer is complaining about
Signature bite was invalid system configuration was invalid memory sizes and valid cmos time and date are invalid
So since this is an old computer. We don't get our fancy auto updating bios properties
We can't just expect it to know what we have with computer
We gotta tell it so our a drive is our three and a half inch high density
Our b drives are five and a quarter inch high density
Hard disk drive. We got to enter the information manually which I've written down, so we got
[936] cylinders
16 heads
and
17 secretaries
Which gives us a size of 124 megabytes. We don't have a second hard disk drive. Can't actually change the memory
It does its own things.
You can change the video card though because we have VGA on this machine. We *do* have a keyboard,
and none of the rest of this is important
for what we need this computer to do.
So let's go ahead and reset and save values and we should be able to boot back into DOS
Like nothing at all has happened.
Wait for it. What is that seek test?
As you can see it did some memory counting there. She doesn't always do
But since it needed to check and [be] sure how much memory it had
It had to do the test
And so we're back we have all our files nothing was deleted everything is the way it [should] be however
Painting infected file that is run of course
will produce
Spam world should I don't know if [we] infected this?
Virus disinfect itself, what happened? [oh]
The dates not in may anymore because if you set the date, that's right, okay
so you would set the date back to normal of course and then you'd reboot and
Then the virus would go off again and wipe the cmos again and generally would just be a huge pain [in] the neck
The whole month of may as the virus would keep resetting your computer settings, and you'd have to keep re-entering the information
So other than that, it's not destructive
It's not horribly in your face
But during the month of may we get pretty annoying and that's about it for he hate [dose] fires