Re: [Full-Disclosure] Backdoor not recognized by Kaspersky

[Nick FitzGerald <nick@xxxxxxxxxxxxxxxxxxx>]

Stef <stefmit@xxxxxxxxxxx> 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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