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Re: Backdoor not recognized by Kaspersky
From: Nick FitzGerald <nick () virus-l demon co uk>
Date: Thu, 04 Mar 2004 14:20:05 +1300

Stef <stefmit () comcast net> wrote:

Someone on the ntbugtrack list mentioned earlier another possible 
solution for A/V gateways: checking for the extension of 
known-to-be-infected files, and appending the "+" sign at the end (e.g. 
.exe+). I have tried this on my first layer Norton Gateway, as well as 
my second tier email A/V - the TrendMicro one (and variations of such - 
e.g. *.exe+, *.exe*, *exe+, etc.), and have not been successful ... 
anybody else having attempted something similar (the reason for the "+" 
is the obvious extension name change inside the ZIP, if there is a 
password protected file) ?

That "+" business (sorry, URL may wrap):

http://www.ntbugtraq.com/default.asp?pid=36&sid=1&A2=ind0403&L=ntbugtraq
&F=P&S=&P=70

is some weird artefact of that poster's system or their use of (a 
specific version of) NAV.

It does _NOT_ generalize.


-- 
Nick FitzGerald
Computer Virus Consulting Ltd.
Ph/FAX: +64 3 3529854

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