Wednesday, 11 May 2011

Chkrootkit Installation

Chkrootkit is a tool to locally check for signs of a rootkit. It contains a chkrootkit: shell script that checks system binaries for rootkit modification.

Installation:– Login to your server as root. (SSH)

cd /usr/local/src
– Down load the chkrootkit.# wget
- Unpack the chkrootkit you just downloaded.# tar -xvzf chkrootkit.tar.gz
- Change to new directory# cd chkrootkit*
- Compile chkrootkit# make sense
- Run chkrootkit# ./chkrootkit

How to setup a daily scan report?
- Load crontab# crontab -e
- Add this line to the top:==========================================================================
0 1 * * * (cd /path/to/chkrootkit; ./chkrootkit 2>&1 | mail -s “chkrootkit output”

E.G:0 1 * * * (cd /usr/local/src/chkrootkit-0.49; ./chkrootkit | mail -s “chkrootkit output” )

This will run CHKROOTKIT at 1am every day, and e-mail the output to root. (you need change the time whenever you want it to run and the email id according to your needs.)

Save and exit

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