Rootkit Hunter
中文名叫”Rootkit猎手”,
可以发现大约58个已知的rootkits和一些嗅探器和后门程序. 它通过执行一系列的测试脚本来确认你的机器是否已经感染rootkits.
比如检查rootkits使用的基本文件, 可执行二进制文件的错误文件权限, 检测内核模块等等. Rootkit Hunter由Michael
Boelen开发, 是开源(GPL)软件.目前最新版本1.4.2
官方现在地址：http://sourceforge.net/projects/rkhunter/
一.rkhunter安装
下载的是最新版本的1.4.2
#wget -S http://downloads.sourceforge.net/project/rkhunter/rkhunter/1.4.2/rkhunter-1.4.2.tar.gz?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Frkhunter%2F&ts=1397456404&use_mirror=jaist
现在完成后只需要解压，运行./install.sh即可
#tar zxvf rkhunter-1.4.2.tar.gz
#cd rkhunter-1.4.2
# ./installer.sh --install #一般没有错误很快会完成
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Checking system for:
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Rootkit Hunter installer files: found
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A web file download command: wget found
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Starting update:
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Checking installation directory "/usr/local": it exists and is writable.
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Checking installation directories:
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Directory /usr/local/share/doc/rkhunter-1.4.2: exists and is writable.
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Directory /usr/local/share/man/man8: exists and is writable.
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Directory /etc: exists and is writable.
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Directory /usr/local/bin: exists and is writable.
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Directory /usr/local/lib64: exists and is writable.
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Directory /var/lib: exists and is writable.
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Directory /usr/local/lib64/rkhunter/scripts: exists and is writable.
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Directory /var/lib/rkhunter/db: exists and is writable.
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Directory /var/lib/rkhunter/tmp: exists and is writable.
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Directory /var/lib/rkhunter/db/i18n: exists and is writable.
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Directory /var/lib/rkhunter/db/signatures: exists and is writable.
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Installing check_modules.pl: OK
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Installing filehashsha.pl: OK
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Installing stat.pl: OK
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Installing readlink.sh: OK
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Installing backdoorports.dat: OK
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Installing mirrors.dat: OK
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Installing programs_bad.dat: OK
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Installing suspscan.dat: OK
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Installing rkhunter.8: OK
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Installing ACKNOWLEDGMENTS: OK
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Installing CHANGELOG: OK
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Installing FAQ: OK
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Installing LICENSE: OK
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Installing README: OK
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Installing language support files: OK
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Installing ClamAV signatures: OK
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Installing rkhunter: OK
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Installing rkhunter.conf in no-clobber mode: OK
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>>>
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>>> PLEASE NOTE: inspect for update changes in "/etc/rkhunter.conf.6525",
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>>> and apply to either "/etc/rkhunter.conf" or your local configuration
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>>> file before running Rootkit Hunter.
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>>>
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Update complete
二.检测系统是否感染后门或恶意软件
安装完成后运行rkhunter会出现帮助信息
1.为基本系统程序建立校对样本，建议系统安装完成后就建立。
执行命令：
rkhunter --propupd
ls /var/lib/rkhunter/db/rkhunter.dat #样本文件位置
2.查杀后门执行命令：
rkhunter --check
只显示报警信息可以运行
rkhunter -c --rwo （report-warnings-only，只显示报警信息）
扫描完成后会生成一份日志存放在/var/log/rkhunter.log
3.在线升级rkhunter
rkhunter是通过一个含有rootkit名字的数据库来检测系统的rootkits漏洞, 所以经常更新该数据库非常重要, 你可以通过下面命令来更新该数据库:
执行命令：
rkhunter --update
4.检测最新版本
让 rkhunter 保持在最新的版本；
执行命令：
rkhunter --versioncheck
