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Find running binary executables that were not installed using dpkg

Terminal - Find running binary executables that were not installed using dpkg
cat /var/lib/dpkg/info/*.list > /tmp/listin ; ls /proc/*/exe |xargs -l readlink | grep -xvFf /tmp/listin; rm /tmp/listin
2009-09-09 18:09:14
User: kamathln
Functions: cat grep ls readlink rm xargs
11
Find running binary executables that were not installed using dpkg

This helped me find a botnet that had made into my system. Of course, this is not a foolproof or guarantied way to find all of them or even most of them. But it helped me find it.

Alternatives

There are 2 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

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What others think

Great command!

Comment by bwoodacre 262 weeks and 3 days ago

Really useful, thanks!

Comment by Patola 262 weeks and 2 days ago

This causes the ram memory to fill up on my machine. So I did this:

cat /var/lib/dpkg/info/*.list | egrep -v '\.(desktop|html|gz|xpm|png|jpg|svg|gif|css|xml|icon|glade|map|md5|tmpl|sample|h|c|rc|m4|mo|data2|ui)$' > /tmp/listin ; ls /proc/*/exe | xargs -l readlink | grep -xvFf /tmp/listin; rm /tmp/listin
Comment by Weboide 262 weeks and 2 days ago

Well, I just realized how not foolproof this is. There was one more botnet whose directory name was just a space. (yeah that one " ").

Can someone come up with a much better command (full input sanitization).

Comment by kamathln 262 weeks and 2 days ago

Never mind my previous comment. When I was trying out again, I had missed giving the '-l' option to xargs.

Weboide: please submit your command as an alternative

Comment by kamathln 262 weeks and 2 days ago

This works on Arch Linux:

ls /proc/*/exe | xargs -L1 readlink | while read line; do if ! pacman -Qo "$line" > /dev/null; then echo $line; fi;

Comment by matthewbauer 155 weeks and 6 days ago

Your point of view

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