full-disclosure - Re: Linux - Indicators of compromise

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Message-ID: <20120716183847.43aedc9f@anubis.defcon1>
Date: Mon, 16 Jul 2012 18:38:47 +0200
From: Bzzz <lazyvirus@....com>
To: full-disclosure@...ts.grok.org.uk
Subject: Re: Linux - Indicators of compromise

On Sat, 14 Jul 2012 12:46:50 +0000
"Ali Varshovi " <ali.varshovi@...mail.com> wrote:

> Does anyone have any guidelines/useful material on analysis logs
> of a Linux machine to detect signs of compromise? The data
> collection piece is not a challenge as a lot of useful information
> can be captured using commands and some scripts. I'm wondering if
> there is any systematic approach to analyze the collected logs?
> Most of the materials I've seen are more aligned to malware and
> rootkit detection which is not the only concern apparently.

Hi Ali,

I'd say send log to another machine, use a "checksumator" (like
tripwire), store its computation files on an external storage 
device and when you check the system with it, boot it on a liveCD.

And as G.Baribault says, each compromised system tries to store its
findings elsewhere on the Internet (often encrypted these days), so
a fine traffic analyzer would be a good thing; but is there a very
good one working out of the box, I don't know!? (beware it can be
very disk space greedy).

JY
-- 
< Overfiend> well, excellent.  I get to tear someone a new asshole.
		-- in #debian-devel

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