[CentOS]Chkrootkit后门检测工具的安装

工具介绍：

         Chkrootkit 工具用来监测 rootkit 是否被安装到当前系统中。rootkit 是 攻击者经常使用的后门程序。这类后门程序通常非常隐秘、不易被察觉，植入后， 等于为攻击者建立了一条能够长时间入侵系统或可对系统进行实时控制的途径。 因此，使用 chkrootkit 工具可定时监测系统，以保证系统的安全。 在使用 chkrootkit 时，若出现 infected，则说明检测出系统后门；若未出现， 则说明未检测出系统后门;

第一步 ：安装编译工具包

yum install gcc gcc-c++ make

yum install glibc-static

第二步：安装Chkrootkit

        Step1.下载软件包

wget https://src.fedoraproject.org/repo/pkgs/chkrootkit/chkrootkit-0.57.tar.gz/sha512/ff35f01042bc68bdd10c4e26dbde7af7127768442c7a10f114260188dcc7e357e2c48d157c0b83b99e2fd465db3ed3933c84ae12fa411c5c28f64b955e742ff7/chkrootkit-0.57.tar.gz

         Step2.解压软件包

tar zxvf chkrootkit-0.57.tar.gz

      Step3.进入目录

cd chkrootkit-0.57

       Step4.安装程序

make sense

        Step5.拷贝到安装目录

mv /usr/local/src/chkrootkit-0.57 /usr/local/chkrootkit

第三步：使用Chkrootkit进行检查

         用法一.全局检查

/usr/local/chkrootkit/chkrootkit

        检查结果如下，如果出现了INFECTED，则说明检测出系统后门；

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 found
Checking `gpm'... not found
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 found
Checking `netstat'... not infected
Checking `named'... not found
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 found
Checking `rlogind'... not found
Checking `rshd'... not found
Checking `slogin'... not infected
Checking `sendmail'... not infected
Checking `sshd'... not found
Checking `syslogd'... not tested
Checking `tar'... not infected
Checking `tcpd'... not found
Checking `tcpdump'... not infected
Checking `top'... not infected
Checking `telnetd'... not found
Checking `timed'... not found
Checking `traceroute'... not found
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/debug/usr/.dwz

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 Kenga3 rotkit 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... not tested
Searching for 64-bit Linux Rootkit ... nothing found
Searching for 64-bit Linux Rootkit modules... nothing found
Searching for Mumblehard Linux ... nothing found
Searching for Backdoor.Linux.Mokes.a ... nothing found
Searching for Malicious TinyDNS ... nothing found
Searching for Linux.Xor.DDoS ... nothing found
Searching for Linux.Proxy.1.0 ... nothing found
Searching for CrossRAT ... nothing found
Searching for Hidden Cobra ... nothing found
Searching for Rocke Miner ... nothing found
Searching for PWNLNX4 lkm... nothing found
Searching for PWNLNX6 lkm... nothing found
Searching for Umbreon lrk... nothing found
Searching for Kinsing.a backdoor... nothing found
Searching for RotaJakiro backdoor... nothing found
Searching for Syslogk LKM rootkit... nothing found
Searching for Kovid LKM rootkit... 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'... eth0: PF_PACKET(/usr/sbin/dhclient;642ea43e (deleted))
docker0: not promisc and no PF_PACKET sockets
br-0d0e8430d791: 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 tested

         用法二. 筛选INFECTED

  检查结果若正常，则不会返回结果，如下图所示。

/usr/local/chkrootkit/chkrootkit | grep INFECTED