Nicolas Ross wrote: > Hi ! > > I think one of my machine got hacked, but I can figure out from where... > > I found some suspicious file in /bin and /usr/bin directories that are > owned > by user id 122, where this machine doesn't a userid 122. > > So, does anyone hav a centos 3.9 install arround that can send me the info One of our investigators has collaborators around the world, on old machines, so we have this: 2.4.21-63.ELsmp #1 SMP Tue Nov 3 18:48:49 EST 2009 i686 athlon i386 GNU/Linux Note they may be different on your machine. > about (filesize, md5, modification date) these file : > > /bin : > ls > netstat > ps -rwxr-xr-x 1 root root 67700 Jun 12 2007 /bin/ls -rwxr-xr-x 1 root root 83800 May 22 2007 /bin/netstat -r-xr-xr-x 1 root root 64076 Apr 19 2006 /bin/ps e102f6c3dde4043908ed001e1587b1d2 /bin/ls bdfc76a24f59cc6cd8a70f771cc5cda4 /bin/netstat fc3369b3564e00f877387a13bf3f467a /bin/ps > > /usr/bin/ > dir > find > md5sum > pstree > slocate > tee > top -rwxr-xr-x 1 root root 67700 Jun 12 2007 /usr/bin/dir -rwxr-xr-x 1 root root 51028 Jan 11 2006 /usr/bin/find -rwxr-xr-x 1 root root 29184 Jun 12 2007 /usr/bin/md5sum -rwxr-xr-x 1 root root 14048 Apr 28 2006 /usr/bin/pstree 0df0aafb355df40b1137355dd354f172 /usr/bin/dir 2c5f4e789da1ad8d19ce5c68ecf8261d /usr/bin/find 03174f884e7fc5fbc215780819679f6e /usr/bin/md5sum 224f527255b2c8deb44f692eaadc873d /usr/bin/pstree 0cee754c3981ba5f527bedc9a8cbea2a /usr/bin/slocate 4ed536310a845f274f6a1611773789d8 /usr/bin/tee 6b42bf37296861c657fcf6b8dba8f675 /usr/bin/top <snip> Hope this helps. mark