Security Incidents mailing list archives

Re: Is this distributed SubSeven?


From: Russell Fulton <r.fulton () AUCKLAND AC NZ>
Date: Wed, 7 Mar 2001 12:59:00 +1300

On Tue, 6 Mar 2001 15:34:20 -0600 Glenn Forbes Fleming Larratt
<glratt () IO COM> wrote:

A summary of our border, in the format below - is this what ditributed
SubSeven looks like?


Hmmm... are you in 24.0.0.0/8?  If so I would guess that what you are
seeing are trojans that are scanning (at random within their /8) for
subseven.  I have a program that detect low level scans and we see low
level probing for upd 137 (100's mostly in 130/8) tcp 524, 515, and
various other trojan ports like subseven.  I have alway assumed that
these were independently infected machines that scan randomly so their
probes do not have to bigger footprint on any network.  Typical rates
we see are 10 packets per day over our /16 address space.

Russell Fulton, Computer and Network Security Officer
The University of Auckland,  New Zealand


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