SQL Slammer Variant?

["Wilson, Aaron J." <AARON.J.WILSON () saic com>]

I am witnessing SQL Slammer IDS events on an internal sensor that aren't
coming from one particular source.  In fact, every packet sent has a unique
and random source IP as well as a unique and random destination IP.  The
data in the packet matches the one shown at
http://isc.incidents.org/analysis.html?id=180.  We have UDP 1434 blocked
around the perimeter and believe this traffic to be originating from a
system within the internal network.  

The rate of packets at around 2-6 packets per minute isn't as high as the
original SQL Slammer traffic I have been seeing (at thousands of packets per
minute).  But this is going to be difficult to track down on a large
network.  If it spreads, 2-6 packets per minute per infected host with
thousands of internal systems... 

The first spell was between 03/27/2003 1023 and 1100 PST.  It picked up
again at 1431 PST on 3/28/2003 and hasn't stopped yet.

Thoughts?  Similar experiences?  Note to coworkers - if this is a practical
joke on me it's a good one.

-Aaron

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