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Re: Backdoor not recognized by Kaspersky
From: William Warren <hescominsoon () emmanuelcomputerconsulting com>
Date: Wed, 03 Mar 2004 07:28:18 -0500

a better solution is to have .zip whoeslae killed at hte firewall/a-v gateway like i have setup here..then these pasword protected zip files are not a concern..:)

Larry Seltzer wrote:

Attached backdoor not recognized by Kaspersky or Norton 2004?

It's Bagle/Beagle.J. The problem is that the file is password-protected, so it's not
obvious how a scanner will get it until it's opened. Notice that the e-mail includes the
password ("65316"). In fact Norton finds it when the ZIP is opened and the extracted
file hits the file system.
Larry Seltzer
eWEEK.com Security Center Editor
larryseltzer () ziffdavis com
-----Original Message-----
From: full-disclosure-admin () lists netsys com
[mailto:full-disclosure-admin () lists netsys com] On Behalf Of Kristian Hermansen
Sent: Tuesday, March 02, 2004 5:34 PM
To: full-disclosure () lists netsys com
Subject: [Full-disclosure] Backdoor not recognized by Kaspersky

Attached backdoor not recognized by Kaspersky or Norton 2004?  I received this file
recently, but Kaspersky did not detect malicious code.  Wondering if any of you guys
know about it or have analyzed it before?  It is definitely NOT a text document.  I
opened it up with WinHex and see the file "yfivyjmg.exe" in there towards the beginning.
Looks to be a packed exe within, and first few bytes are:


Last few bytes are:


I am reluctant to open the zip right now, as I fear it may be exploiting an overflow to
run the EXE file within.  I may try to open it on a virtual machine later, but if you
guys do know anything about this one please let me know.  It's nice and small too (12
KB)!  Wonder if the guy wrote it himself. Of course, the IP address is spoofed to a
University of Chicago machine.  Is it even possible to trace back?  I still have the
full headers, but they looked nicely stripped to the gills.  I have been receiving
elevated attacks via email over the last few days, so maybe it is some guy on this list
trying to get me ;-)  One previous email stated that it was the FBI and to call a number
listed in the email.  This was most likely an attempt to get the number I was calling
from.  This guy thinks he's smooth...

Kristian Hermansen
khermansen () ht-technology com

-----Original Message-----
From: management () zerotoys com [mailto:management () {blankedout} com] Sent: Tuesday, March 02, 2004 5:03 PM
To: webmaster () {blankedout} com
Subject: E-mail account security warning.

Dear user of  {blankedout}.com  gateway e-mail server,

Your  e-mail account has been temporary disabled because of unauthorized access.

For details see the attached file.

For security  purposes  the  attached file  is password protected.  Password is "65316".

Best  wishes,
    The {blankedout}.com  team                               http://www.

Full-Disclosure - We believe in it.
Charter: http://lists.netsys.com/full-disclosure-charter.html

My "Foundation" verse:
Isa 54:17 No weapon that is formed against thee shall prosper; and every tongue that shall rise against thee in judgment thou shalt condemn. This is the heritage of the servants of the LORD, and their righteousness is of me, saith the LORD.

Full-Disclosure - We believe in it.
Charter: http://lists.netsys.com/full-disclosure-charter.html

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