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PostPosted: Tue Apr 19, 2005 10:15 am 
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Senior Newbie

Joined: Tue Feb 22, 2005 12:17 am
Posts: 17
Location: Montreal, QC
Hi everyone, still learning and this morning I've received this from chkrootkit.

Code:
/etc/cron.daily/chkrootkit:
You have     1 process hidden for readdir command
You have     1 process hidden for ps command
Warning: Possible LKM Trojan installed
eth0: PACKET SNIFFER(/sbin/dhclient[200])


Then I've tried:

Code:
myhost:~# chkrootkit -x lkm
ROOTDIR is `/'
###
### Output of: ./chkproc -v -v -p 2
###


Which, as you see, returned nothing. I've search around and it seems it is possible that chkrootkit returns false positives.

I use the 2.4.29-linode39-1um kernel with Debian Sarge.

Can someone explain to me what triggered this false positive today? Is it installation/upgrade of modules on the host-side?

Thanks!


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