Chkrootkit warning
Anne Wilson
cannewilson at tiscali.co.uk
Fri Jan 26 22:06:07 UTC 2007
Checking `crontab'... Warning: crontab for nobody found, possible
Lupper.Worm... not infected
********
a) Lupper.Worm apparently attacks linux web servers. I don't run a web
server, on that or any other box on the lan.
b) Symptoms
Presence of one or more the following files:
* /tmp/lupii
* /tmp/listen
* /tmp/update.listen
* /tmp/listen.log
None are present
One or more of the following ports are listening/sending:
* UDP 7111
* UDP 7222
* UDP 27015
* UDP 25555
All these are reported as Stealthed by GRC.
crontab'... Warning: crontab for nobody found, possible Lupper.Worm... not
infected
The message is very puzzling. It specifically says 'not infected', and my
checks seem to agree with this.
I don't know why it talks about crontab for nobody.
cat /etc/crontab
SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=anne at lydgate.net
HOME=/
# run-parts
1 * * * * root run-parts /etc/cron.hourly
#
2 4 * * * root run-parts /etc/cron.daily
#
22 4 * * 7 root run-parts /etc/cron.weekly
#
42 4 1 * * root run-parts /etc/cron.monthly
I've checked kcron, and while nobody is present, as indeed he is on this box
too, no tasks are set for him.
I can't see what else to check.
Anne
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