full-disclosure - Urgent Alert: Possible BlackWorm DDay February 3rd (Snort signatures included)

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Date: Thu Jan 26 00:05:57 2006
From: frank at knobbe.us (Frank Knobbe)
Subject: Urgent Alert: Possible BlackWorm DDay
	February 3rd (Snort signatures included)

On Wed, 2006-01-25 at 17:54 -0600, Kevin wrote:
> Is there anything unique about the URL for the request BlackWorm makes
> towards "webstats.web.rcn.net", such as the arguments to df= ?

The worm accesses a unique number after the df=. If you supply a
differnet number, you access (or create) a different counter. df=testme
also qualifies as a counter.

Strangely, ?dfudge=xxx also works. I guess the script only checks for df
and ignores anything after that. df = data file? Anyway... if the
numbers are different, you may have other applications/viruses/things
than the Nymex accessing a different counter.

Cheers,
Frank

-- 
It is said that the Internet is a public utility. As such, it is best
compared to a sewer. A big, fat pipe with a bunch of crap sloshing
against your ports.

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