Linux: how to install chkrootkit


Install chkrootkit

The chkrootkit is a security scanner to check if the system is infected with the rootkit. A rootkit is a collection of computer software, typically malicious, designed to enable access to a computer or areas of its software that would not otherwise be allowed (for example, to an unauthorized user) while at the same time masking its existence or the existence of other software.

Step 1: cd /usr/local/src
Step 2: wget ftp://ftp.pangeia.com.br/pub/seg/pac/chkrootkit.tar.gz

[root@tutorialspots /]# cd /usr/local/src
[root@tutorialspots src]# wget ftp://ftp.pangeia.com.br/pub/seg/pac/chkrootkit.tar.gz
--2016-03-01 15:25:08--  ftp://ftp.pangeia.com.br/pub/seg/pac/chkrootkit.tar.gz
           => `chkrootkit.tar.gz'
Resolving ftp.pangeia.com.br... 187.33.4.179
Connecting to ftp.pangeia.com.br|187.33.4.179|:21... connected.
Logging in as anonymous ... Logged in!
==> SYST ... done.    ==> PWD ... done.
==> TYPE I ... done.  ==> CWD /pub/seg/pac ... done.
==> SIZE chkrootkit.tar.gz ... 38616
==> PASV ... done.    ==> RETR chkrootkit.tar.gz ... done.
Length: 38616 (38K)

100%[======================================>] 38,616      69.4K/s   in 0.5s

2016-03-01 15:25:11 (69.4 KB/s) - `chkrootkit.tar.gz' saved [38616]

Step 3: tar -xvzf chkrootkit.tar.gz

[root@tutorialspots src]# tar -xvzf chkrootkit.tar.gz
chkrootkit-0.50
chkrootkit-0.50/chkproc.c
chkrootkit-0.50/COPYRIGHT
chkrootkit-0.50/README.chkwtmp
chkrootkit-0.50/chkutmp.c
chkrootkit-0.50/chkwtmp.c
chkrootkit-0.50/ifpromisc.c
chkrootkit-0.50/strings.c
chkrootkit-0.50/chklastlog.c
chkrootkit-0.50/chkrootkit.lsm
chkrootkit-0.50/check_wtmpx.c
chkrootkit-0.50/chkdirs.c
chkrootkit-0.50/Makefile
chkrootkit-0.50/README
chkrootkit-0.50/README.chklastlog
chkrootkit-0.50/ACKNOWLEDGMENTS
chkrootkit-0.50/chkrootkit

Step 4: cd chkrootkit-0.50
Step 5: make sense

[root@tutorialspots src]# cd chkrootkit-0.50
[root@tutorialspots chkrootkit-0.50]# make sense
cc -DHAVE_LASTLOG_H -o chklastlog chklastlog.c
cc -DHAVE_LASTLOG_H -o chkwtmp chkwtmp.c
cc -DHAVE_LASTLOG_H   -D_FILE_OFFSET_BITS=64 -o ifpromisc ifpromisc.c
cc  -o chkproc chkproc.c
cc  -o chkdirs chkdirs.c
cc  -o check_wtmpx check_wtmpx.c
cc -static  -o strings-static strings.c
cc  -o chkutmp chkutmp.c

Done, now we can use chkrootkit by using this command

./chkrootkit

chkrootkit

[root@tutorialspots chkrootkit-0.50]# ./chkrootkit
ROOTDIR is `/'
Checking `amd'... not found
Checking `basename'... not infected
Checking `biff'... not found
Checking `chfn'... not infected
Checking `chsh'... not infected
Checking `cron'... not infected
Checking `crontab'... not infected
Checking `date'... not infected
Checking `du'... not infected
Checking `dirname'... not infected
Checking `echo'... not infected
Checking `egrep'... not infected
Checking `env'... not infected
Checking `find'... not infected
Checking `fingerd'... not infected
Checking `gpm'... not infected
Checking `grep'... not infected
Checking `hdparm'... not found
Checking `su'... not infected
Checking `ifconfig'... not infected
Checking `inetd'... not tested
Checking `inetdconf'... not found
Checking `identd'... not found
Checking `init'... not infected
Checking `killall'... not infected
Checking `ldsopreload'... not infected
Checking `login'... not infected
Checking `ls'... not infected
Checking `lsof'... not infected
Checking `mail'... not infected
Checking `mingetty'... not infected
Checking `netstat'... not infected
Checking `named'... not infected
Checking `passwd'... not infected
Checking `pidof'... not infected
Checking `pop2'... not found
Checking `pop3'... not found
Checking `ps'... not infected
Checking `pstree'... not infected
Checking `rpcinfo'... not infected
Checking `rlogind'... not found
Checking `rshd'... not found
Checking `slogin'... not infected
Checking `sendmail'... not infected
Checking `sshd'... not infected
Checking `syslogd'... not infected
Checking `tar'... not infected
Checking `tcpd'... not infected
Checking `tcpdump'... not infected
Checking `top'... not infected
Checking `telnetd'... not found
Checking `timed'... not found
Checking `traceroute'... not infected
Checking `vdir'... not infected
Checking `w'... not infected
Checking `write'... not infected
Checking `aliens'... no suspect files
Searching for sniffer's logs, it may take a while... nothing found
Searching for HiDrootkit's default dir... nothing found
Searching for t0rn's default files and dirs... nothing found
Searching for t0rn's v8 defaults... nothing found
Searching for Lion Worm default files and dirs... nothing found
Searching for RSHA's default files and dir... nothing found
Searching for RH-Sharpe's default files... nothing found
Searching for Ambient's rootkit (ark) default files and dirs... nothing found
Searching for suspicious files and dirs, it may take a while...
/usr/lib/.libgcrypt.so.11.hmac /usr/lib/perl5/5.8.8/i386-linux-thread-multi/.pac
klist /usr/lib/.libfipscheck.so.1.1.0.hmac /usr/lib/.libfipscheck.so.1.hmac /usr
/lib/python2.4/plat-linux2/.relocation-tag /usr/lib/python2.4/config/.relocation
-tag /usr/lib/python2.4/distutils/.relocation-tag /usr/lib/gtk-2.0/immodules/.re
location-tag /lib/.libssl.so.0.9.8e.hmac /lib/.libcrypto.so.0.9.8e.hmac /lib/.li
bcrypto.so.6.hmac /lib/.libssl.so.6.hmac

Searching for LPD Worm files and dirs... nothing found
Searching for Ramen Worm files and dirs... nothing found
Searching for Maniac files and dirs... nothing found
Searching for RK17 files and dirs... nothing found
Searching for Ducoci rootkit... nothing found
Searching for Adore Worm... nothing found
Searching for ShitC Worm... nothing found
Searching for Omega Worm... nothing found
Searching for Sadmind/IIS Worm... nothing found
Searching for MonKit... nothing found
Searching for Showtee... nothing found
Searching for OpticKit... nothing found
Searching for T.R.K... nothing found
Searching for Mithra... nothing found
Searching for LOC rootkit... nothing found
Searching for Romanian rootkit... nothing found
Searching for HKRK rootkit... nothing found
Searching for Suckit rootkit... nothing found
Searching for Volc rootkit... nothing found
Searching for Gold2 rootkit... nothing found
Searching for TC2 Worm default files and dirs... nothing found
Searching for Anonoying rootkit default files and dirs... nothing found
Searching for ZK rootkit default files and dirs... nothing found
Searching for ShKit rootkit default files and dirs... nothing found
Searching for AjaKit rootkit default files and dirs... nothing found
Searching for zaRwT rootkit default files and dirs... nothing found
Searching for Madalin rootkit default files... nothing found
Searching for Fu rootkit default files... nothing found
Searching for ESRK rootkit default files... nothing found
Searching for rootedoor... nothing found
Searching for ENYELKM rootkit default files... nothing found
Searching for common ssh-scanners default files... nothing found
Searching for Linux/Ebury - Operation Windigo ssh... nothing found
Searching for 64-bit Linux Rootkit ... nothing found
Searching for 64-bit Linux Rootkit modules... nothing found
Searching for suspect PHP files... nothing found
Searching for anomalies in shell history files... nothing found
Checking `asp'... not infected
Checking `bindshell'... not infected
Checking `lkm'... chkproc: nothing detected
chkdirs: nothing detected
Checking `rexedcs'... not found
Checking `sniffer'... venet0: not promisc and no PF_PACKET sockets
venet0:0: not promisc and no PF_PACKET sockets
Checking `w55808'... not infected
Checking `wted'... chkwtmp: nothing deleted
Checking `scalper'... not infected
Checking `slapper'... not infected
Checking `z2'... chklastlog: nothing deleted
Checking `chkutmp'... chkutmp: nothing deleted
Checking `OSX_RSPLUG'... not infected

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