Re: [PEN-TEST] Hidden NT batch file/command line execution

[Steve Cody <SCody () GULBRANDSEN COM>]

I don't know how you would do this with programming, but what you want can
be done through the AT Scheduler service.  When you start an app with the
scheduler, it is in non-interactive mode.  You can specify /INTERACTIVE for
it to appear on your screen.  Since your service does things at certain
intervals, if you could find a way for it to start from the scheduler, it
would not be apparent to any console user unless you used the /INTERACTIVE
switch when scheduling the item.

Steve Cody, MCSE
Information Systems Administrator
Gulbrandsen Manufacturing, Inc.
Office - 803.531.2413 x102
Email - scody () gulbrandsen com


-----Original Message-----
From: Mike Ahern [mailto:mc_ahern () YAHOO COM]
Sent: Wednesday, October 04, 2000 12:20 PM
To: PEN-TEST () SECURITYFOCUS COM
Subject: [PEN-TEST] Hidden NT batch file/command line execution


I am experiencing a problem that someone on this list
might be able to answer quickly. I would think the
answers might also be of interest to most any
Penetration Tester on the list who would want to
occasionally run shell code on a box without raising
awareness of NT server operators/admins on the
console.

I am currently working with a security app that runs
as an NT service, however at frequent intervals it
executes an NT batch process in a command window
(cmd.exe). The net effect is very distracting for
anyone who has to work on the server console, as it
appears like some giant black strobe, blinking in a
way that is more much annoying than blinking HTML
text.

I know from running stealth keyloggers and certain
trojans (BO/BO2K) and program wrappers that programs
can be executed without popping up any window, without
anything on the toolbar, or in the Task Manager, and
that VB offers this capablility.

Are there any cute, clean, "down and dirty", wrapper
apps (VB scripts, etc) that will execute command line
stuff, batch files, etc., without popping anything up,
or will be pretty unobtrusive to the console operator?
Or are the only solutions really hiding the execution
in VB or other lower level code that we would have to
generate uniquely for each process we need to run
currently as a batch process??? I have to think that
someone has written something to do this already, but
a quick search hasn't revealed anything as of yet.

Any ideas?
Thanks in advance for any assistance you might be able
to proffer.


-mch







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