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Old 05-17-2005, 10:44 PM   #1
Damon Spector
Registered: Nov 2004
Distribution: Fedora Core 4
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Hacked or Not

as I was passing by my computer I noticed that the hard drive light was flashing and I could hear the hard drive running but no one had been near the computer for hours. I also saw lights flashing on my access point. Would this mean some one was hacking in to my system or what? if so what do I do?
Old 05-17-2005, 11:07 PM   #2
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Not necessarily. There are plenty of house-keeping functions that are run automagically by cron. One of the most common causes is updating the file db used by commands like 'locate'. Next time you see something like that, checkout the output of 'top' and 'ps aux'.

It's probably a good idea to download and run rkhunter or chkrootkit just to be a little more sure though.
Old 05-17-2005, 11:14 PM   #3
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Try installing "samhain is a daemon that can check file integrity, search the file tree for SUID files, and detect kernel module rootkits"

It checks a few more things than checkrootkit does.
Old 05-18-2005, 01:48 AM   #4
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Samhain builds its file integrity db on installation much like tripwire, so if you already have a rootkit or trojaned binary, you're actually going to include it as part of the "known-good" baseline. Plus it's really more of a HIDS. Rkhunter uses a predefined database that's got md5sums for each distro already included for you and is probably a better choice for potential post-compromise rootkit detection.


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