[unisog] New worm?

Peter Van Epp vanepp at sfu.ca
Thu Apr 14 16:00:23 GMT 2005

On Thu, Apr 14, 2005 at 10:16:57AM -0400, Pete Hickey wrote:
> Not sure if this is a worm or just some hacker.
> We've had a couple Unix boxes compromised.  A dictionary (userid/password)
> attack on ssh.  Once he gets a good password, a program is run,
> which does the same thing against other machines.
> There is no attempt at trying to cover tracks:  no rootkit
> installed, logs intact, etc.  The process is not run as root,
> but as the user for which the password was guessed.  This
> type of behavior makes me think it is a worm, rather than
> someone doing a one-off hack.  Oh yeah.  It also attempts
> a (probably) IRC connection to (our default
> firewall blocks port 6667)
> What makes me not think this is a worm, is that I only saw 
> three addresses scanning our address space on port 22.
> Anyone else seeing this?
> -- 
> Pete Hickey                                       /~\  The ASCII
> The University of Ottawa                          \ /  Ribbon Campaign
> Ottawa, Ontario                                    X   Against HTML
> Canada                                            / \  Email!
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	My sense is the remote scans for 22 are about normal (a couple per day 
for varying chunks of our address spaces) and more importantly nothing internal
scanning outwards on 22. A check indicated no connections to
in the last day or two.

Peter Van Epp / Operations and Technical Support 
Simon Fraser University, Burnaby, B.C. Canada

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