"Thomas Mueller" <[EMAIL PROTECTED]> wrote:

>from [EMAIL PROTECTED] (Howard Eisenberger):
>
>>    I ran joke.exe in pure DOS once (it's a DOS program) and gave my
>>    PC the Hubris virus which was recognized by F-Prot. Of course, it
>>    is benign in DOS, since the way it works is to modify wsock32.dll.
>>    I simply got rid of it with a warm reboot.

Correction: F-Prot merely finds the infected file on my hardrive.

|Scanning D:
|D:\WORK\JOKE.EXE  Infection: W95/Hybris.worm.B

Running it in DOS doesn't do anything at all. It is not necessary
to reboot.

> What does joke.exe look like when it runs in pure DOS?  I guess it did no damage
> to the boot sector or partition table?  What happens when joke.exe can't play a
> joke on WSOCK32.DLL or the Windows Registry, because these don't exist?

Fortunately, nothing happens. I guess if it can't find WSOCK32.DLL,
it just exits. The way it spreads is described at McAfee.com (link
from www.sexyfun.net):

|The modified WSOCK32.DLL file watches all Internet activity and
|attempts to mail a copy of the worm, in the form of a .EXE or .SCR
|file, to any valid e-mail address sent over the Internet connection,
|whether part of a e-mail message, webpage, or newsgroup posting.

Howard E.

-- 
DOS TCP/IP * <URL:http://www.ncf.ca/~ag221/dosppp.html>

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