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Re: Strange Traffic to ports 139 and 137 from a machine with no data

from [Joachim Schipper] Network Security [Permanent Link]
Subject: Re: Strange Traffic to ports 139 and 137 from a machine with no data
Date: Wed, 1 Mar 2006 09:52:51 +0100 
On Tue, Feb 28, 2006 at 04:31:55PM -0000, loki74@gmail.com wrote:

Hello all,
 I have a machine that is sending out empty data packets destined to
 random ip addresses with a destination port of 137 and 139.  All the
 IP Addresses seem to be a military and NOC location.  I have attached
 some of the IP's below.  I have ran antivirus, anti-spyware and
 rootkit detectors (sysinternals, and f-prot) all came up empty.  I
 had found one other person on the internet that seemed to have this
 problem, but no resolution. Any ideas?


<snip: addresses>

If you are not interested in researching the malware on the machine,
nuke and reinstall. Sure, it may just be an innocuous misconfiguration,
but reinstalling tends to be at least as fast and give better results,
too. In any case, take it off the net, or the rest of your LAN may be
zombified soon. Like, yesterday.

                Joachim
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