{"id":430,"date":"2008-08-26T19:18:29","date_gmt":"2008-08-26T11:18:29","guid":{"rendered":"http:\/\/www.liangliang.org.cn\/blog\/?p=430"},"modified":"2008-08-26T19:18:29","modified_gmt":"2008-08-26T11:18:29","slug":"%e4%bd%bf%e7%94%a8chkrootkit%e5%b7%a5%e5%85%b7%e8%bd%af%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/www.liangliang.org.cn\/?p=430","title":{"rendered":"\u4f7f\u7528chkrootkit\u5de5\u5177\u8f6f\u4ef6"},"content":{"rendered":"\n

< \u5165\u4fb5\u76d1\u6d4b\u7cfb\u7edf\u7684\u6784\u5efa\uff08 chkrootkit \uff09 ><\/strong> \uff08\u6700\u8fd1\u66f4\u65b0\u65e5\uff1a2006\/08\/24\uff09<\/p>\n\n\n\n
\n\n\n\n
\u524d\u3000\u3000\u8a00 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u6240\u8c13 rootkit \uff0c\u662f\u4e00\u7c7b\u5165\u4fb5\u8005\u7ecf\u5e38\u4f7f\u7528\u7684\u5de5\u5177\u3002\u8fd9\u7c7b\u5de5\u5177\u901a\u5e38\u975e\u5e38\u7684\u9690\u79d8\u3001\u4ee4\u7528\u6237\u4e0d\u6613\u5bdf\u89c9\uff0c\u901a\u8fc7\u8fd9\u7c7b\u5de5\u5177\uff0c\u5165\u4fb5\u8005\u5efa\u7acb\u4e86\u4e00\u6761\u80fd\u591f\u5e38\u65f6\u5165\u4fb5\u7cfb\u7edf\uff0c\u6216\u8005\u8bf4\u5bf9\u7cfb\u7edf\u8fdb\u884c\u5b9e\u65f6\u63a7\u5236\u7684\u9014\u5f84\u3002\u6240\u4ee5\uff0c\u6211\u4eec\u7528\u81ea\u7531\u8f6f\u4ef6 chkrootkit \u6765\u5efa\u7acb\u5165\u4fb5\u76d1\u6d4b\u7cfb\u7edf\uff0c\u6765\u4fdd\u8bc1\u5bf9\u7cfb\u7edf\u662f\u5426\u88ab\u5b89\u88c5\u4e86 rootkit \u8fdb\u884c\u76d1\u6d4b\u3002<\/p>\n

chkrootkit \u5728\u76d1\u6d4b rootkit \u662f\u5426\u88ab\u5b89\u88c5\u7684\u8fc7\u7a0b\u4e2d\uff0c\u9700\u8981\u4f7f\u7528\u5230\u4e00\u4e9b\u64cd\u4f5c\u7cfb\u7edf\u672c\u8eab\u7684\u547d\u4ee4\u3002\u4f46\u4e0d\u6392\u9664\u4e00\u79cd\u60c5\u51b5\uff0c\u90a3\u5c31\u662f\u5165\u4fb5\u8005\u6709\u9488\u5bf9\u6027\u7684\u5df2\u7ecf\u5c06 chkrootkit \u4f7f\u7528\u7684\u7cfb\u7edf\u547d\u4ee4\u4e5f\u505a\u4fee\u6539\uff0c\u4f7f\u5f97 chkrootkit \u65e0\u6cd5\u76d1\u6d4b rootkit \uff0c\u4ece\u800c\u8fbe\u5230\u5373\u4f7f\u7cfb\u7edf\u5b89\u88c5\u4e86 chkrootkit \u4e5f\u65e0\u6cd5\u68c0\u6d4b\u51fa rootkit \u7684\u5b58\u5728\uff0c\u4ece\u800c\u4f9d\u7136\u5bf9\u7cfb\u7edf\u6709\u7740\u63a7\u5236\u7684\u9014\u5f84\uff0c\u800c\u8fbe\u5230\u5165\u4fb5\u7684\u76ee\u7684\u3002\u90a3\u6837\u7684\u8bdd\uff0c\u7528 chkrootkit \u6784\u5efa\u5165\u4fb5\u76d1\u6d4b\u7cfb\u7edf\u5c06\u5931\u53bb\u4efb\u4f55\u610f\u4e49\u3002\u5bf9\u6b64\uff0c\u6211 \u4eec\u5728\u64cd\u4f5c\u7cfb\u7edf\u521a\u88ab\u5b89\u88c5\u4e4b\u540e\uff0c\u6216\u8005\u8bf4\u670d\u52a1\u5668\u5f00\u653e\u4e4b\u524d\uff0c\u8ba9 chkrootkit \u5c31\u5f00\u59cb\u5de5\u4f5c\u3002\u800c\u4e14\uff0c\u5728\u670d\u52a1\u5668\u5f00\u653e\u4e4b\u524d\uff0c\u5907\u4efd chkrootkit \u4f7f\u7528\u7684\u7cfb\u7edf\u547d \u4ee4\uff0c\u5728\u4e00\u4e9b\u5fc5\u8981\u7684\u65f6\u5019\uff08\u6000\u7591\u7cfb\u7edf\u547d\u4ee4\u5df2\u88ab\u4fee\u6539\u7684\u60c5\u51b5\u7b49\u7b49\uff09\uff0c\u8ba9 chkrootkit \u4f7f\u7528\u521d\u59cb\u5907\u4efd\u7684\u7cfb\u7edf\u547d\u4ee4\u8fdb\u884c\u5de5\u4f5c\u3002<\/p>\n\n\n\n
\n\n\n\n
\u5b89\u88c5 chkrootkit <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u9996\u5148\u6765\u4e0b\u8f7d\u548c\u5b89\u88c5 chkrootkit \u5de5\u5177\u3002<\/p>\n\n\n\n
[root@sample ~]# wget ftp:\/\/ftp.pangeia.com.br\/pub\/seg\/pac\/chkrootkit.tar.gz\u3000\u2190 \u4e0b\u8f7dchkrootkit<\/p>\n

--03:05:31-- ftp:\/\/ftp.pangeia.com.br\/pub\/seg\/pac\/chkrootkit.tar.gz
=> `chkrootkit.tar.gz'
Resolving ftp.pangeia.com.br... 200.239.53.35
Connecting to ftp.pangeia.com.br|200.239.53.35|:21... connected.
Logging in as anonymous ... Logged in!
==> SYST ... done. ==> PWD ... done.
==> TYPE I ... done. ==> CWD \/pub\/seg\/pac ... done.
==> PASV ... done. ==> RETR chkrootkit.tar.gz ... done.
Length: 37,140 (36K) (unauthoritative)
100%[====================================>] 37,140 5.67K\/s ETA 00:00
03:05:46 (5.30 KB\/s) - `chkrootkit.tar.gz' saved [37140]<\/p>\n

[root@sample ~]# tar zxvf chkrootkit.tar.gz \u3000\u2190 \u5c55\u5f00\u88ab\u538b\u7f29\u7684\u6e90\u4ee3\u7801<\/p>\n

[root@sample ~]# cd chkrootkit* \u3000\u2190 \u8fdb\u5165chkrootkit\u6e90\u4ee3\u7801\u7684\u76ee\u5f55<\/p>\n

[root@sample chkrootkit-0.46a]# make sense \u3000\u2190 \u7f16\u8bd1<\/p>\n

[root@sample chkrootkit-0.46a]# cd .. \u3000\u2190 \u8fd4\u56de\u4e0a\u5c42\u76ee\u5f55<\/p>\n

[root@sample ~]# cp -r chkrootkit-* \/usr\/local\/chkrootkit \u3000\u2190 \u590d\u5236\u7f16\u8bd1\u540e\u6587\u4ef6\u6240\u5728\u7684\u76ee\u5f55\u5230\u6307\u5b9a\u4f4d\u7f6e<\/p>\n

[root@sample ~]# rm -rf chkrootkit* \u3000\u2190 \u5220\u9664\u9057\u7559\u7684\u6e90\u4ee3\u7801\u76ee\u5f55\u53ca\u76f8\u5173\u6587\u4ef6 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n
\n\n\n\n
\n

\u6d4b\u8bd5 chkrootkit<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u7136\u540e\u6d4b\u8bd5 chkrootkit \u662f\u5426\u80fd\u591f\u6b63\u5e38\u8fd0\u884c\u3002<\/p>\n\n\n\n
[root@sample ~]# cd \/usr\/local\/chkrootkit\u3000 \u2190 \u8fdb\u5165chkrootkit\u7684\u76ee\u5f55<\/p>\n

[root@sample chkrootkit]# .\/chkrootkit | grep INFECTED\u3000 \u2190 \u6d4b\u8bd5\u8fd0\u884cchkrootkit
\u7a0d\u7b49\u7247\u523b\u2026\u5982\u679c\u6ca1\u6709\u663e\u793a\u201cINFECTED\u201d\u5b57\u6837\uff0c\u800c\u76f4\u63a5\u51fa\u73b0\u547d\u4ee4\u884c\u63d0\u793a\u7b26\uff0c\u8bf4\u660e\u4e00\u5207OK\uff01<\/p>\n

[root@sample chkrootkit]# cd \u3000 \u2190 \u56de\u5230root\u7528\u6237\u76ee\u5f55 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n
\n\n\n\n
\n

\u8ba9 chkrootkit \u7684\u76d1\u6d4b\u81ea\u52a8\u5316<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u7528Shell Script\u7f16\u5199\u4e00\u6bb5\u811a\u672c\uff0c\u901a\u8fc7\u8fd9\u4e2a\u811a\u672c\u8ba9chkrootkit\u7684\u76d1\u6d4b\u81ea\u52a8\u5316\u3002\u5982\u6709rootkit\u88ab\u53d1\u73b0\u7684\u65f6\u5019\uff0c\u53d1\u9001\u90ae\u4ef6\u901a\u77e5root\u7528\u6237\uff0c\u5e76\u4e14\u5c06\u8fd0\u884c\u7ed3\u679c\u4fdd\u5b58\u5728\/var\/log\/messages\u6587\u4ef6\u4e2d\u3002<\/p>\n\n\n\n
[root@sample ~]# vi chkrootkit\u3000 \u2190 \u5efa\u7acbchkrootkit\u81ea\u52a8\u8fd0\u884c\u811a\u672c<\/p>\n

#!\/bin\/bash
PATH=\/usr\/bin:\/bin
TMPLOG=`mktemp`
# Run the chkrootkit
\/usr\/local\/chkrootkit\/chkrootkit > $TMPLOG
# Output the log
cat $TMPLOG | logger -t chkrootkit
# bindshe of SMTPSllHow to do some wrongs
if [ ! -z \"$(grep 465 $TMPLOG)\" ] && \\
[ -z $(\/usr\/sbin\/lsof -i:465|grep bindshell) ]; then
sed -i '\/465\/d' $TMPLOG
fi
# If the rootkit have been found,mail root
[ ! -z \"$(grep INFECTED $TMPLOG)\" ] && \\
grep INFECTED $TMPLOG | mail -s \"chkrootkit report in `hostname`\" root
rm -f $TMPLOG<\/p>\n

[root@sample ~]# chmod 700 chkrootkit\u3000 \u2190 \u8d4b\u4e88\u811a\u672c\u53ef\u88ab\u6267\u884c\u7684\u6743\u9650<\/p>\n

[root@sample ~]# mv chkrootkit \/etc\/cron.daily\/\u3000 \u2190 \u5c06\u811a\u672c\u79fb\u52a8\u5230\u6bcf\u5929\u81ea\u52a8\u8fd0\u884c\u7684\u76ee\u5f55\u4e2d <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n
\n\n\n\n
\n

chkrootkit \u76f8\u5173\u7684\u7cfb\u7edf\u547d\u4ee4\u7684\u5907\u4efd<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u5982\u524d\u8a00\u6240\u8ff0\uff0c\u5f53chkrootkit\u4f7f\u7528\u7684\u7cfb\u7edf\u547d\u4ee4\u88ab\u5165\u4fb5\u8005\u66f4\u6539\u540e\uff0cchkrootkit\u5bf9 rootkit\u7684\u76d1\u6d4b\u5c06\u5931\u6548\u3002\u6240\u4ee5\uff0c\u6211\u4eec\u4e8b\u524d\u5c06chkrootkit\u4f7f\u7528\u7684\u7cfb\u7edf\u547d\u4ee4\u8fdb\u884c\u5907\u4efd\uff0c\u5728\u9700\u8981\u7684\u65f6\u5019\u4f7f\u7528\u5907\u4efd\u7684\u539f\u59cb\u547d\u4ee4\uff0c\u8ba9chkrootkit\u5bf9 rootkit\u8fdb\u884c\u68c0\u6d4b\u3002<\/p>\n\n\n\n
[root@sample ~]# mkdir \/root\/commands\/\u3000 \u2190 \u5efa\u7acb\u6682\u65f6\u5bb9\u7eb3\u547d\u4ee4\u5907\u4efd\u7684\u76ee\u5f55<\/p>\n

[root@sample ~]# cp `which --skip-alias awk cut echo egrep find head id ls netstat ps strings sed uname` \/root\/commands\/\u3000 \u2190 \uff08\u8fde\u7eed\u8f93\u5165\u65e0\u6362\u884c\uff09\u5907\u4efd\u7cfb\u7edf\u547d\u4ee4\u5230\u5efa\u7acb\u597d\u7684\u76ee\u5f55 <\/p>\n

[root@sample ~]# \/usr\/local\/chkrootkit\/chkrootkit -p \/root\/commands|grep INFECTED\u3000 \u2190 \u7528\u5907\u4efd\u7684\u547d\u4ee4\u8fd0\u884cchkrootkit<\/p>\n

[root@sample ~]# tar cvf \/root\/commands.tar \/root\/commands\/\u3000\u2190 \u5c06\u547d\u4ee4\u6253\u5305<\/p>\n

[root@sample ~]# gzip \/root\/commands.tar\u3000 \u2190 \u5c06\u6253\u5305\u7684\u6587\u4ef6\u538b\u7f29
\u7136\u540e\u5c06\u538b\u7f29\u540e\u7684commands.tar.gz\u7528SCP\u8f6f\u4ef6\u4e0b\u8f7d\u5230\u5b89\u5168\u7684\u5730\u65b9<\/p>\n

[root@sample ~]# rm -rf commands* \u3000 \u2190 \u4e3a\u5b89\u5168\u8d77\u89c1\uff0c\u5220\u9664\u670d\u52a1\u5668\u7aef\u5907\u4efd\u7684\u7cfb\u7edf\u547d\u4ee4\u53ca\u76f8\u5173\u6587\u4ef6 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u5982\u679c\u4ee5\u540e\u60f3\u901a\u8fc7\u5907\u4efd\u7684\u539f\u59cb\u7cfb\u7edf\u547d\u4ee4\u6765\u8fd0\u884cchkrootkit\u7684\u65f6\u5019\uff0c\u53ea\u9700\u7528SCP\u8f6f\u4ef6\u5c06\u5907\u4efd\u7684\u547d\u4ee4\u6253\u5305\u538b\u7f29\u6587\u4ef6\u4e0a\u4f20\u81f3\u670d\u52a1\u5668\u7aef\u5df2\u77e5\u4f4d\u7f6e\u5e76\u89e3\u538b\u7f29\uff0c\u7136\u540e\u8fd0\u884c\u5728chkrootkit\u7684\u65f6\u5019\u6307\u5b9a\u76f8\u5e94\u7684\u76ee\u5f55\u5373\u53ef\u3002\u4f8b\u5982\uff0c\u5047\u8bbe\u5df2\u7ecf\u5c06\u5907\u4efd\u4e0a\u4f20\u81f3root\u7528\u6237\u76ee\u5f55\u7684\u60c5\u51b5\u5982\u4e0b\uff1a<\/p>\n\n\n\n
[root@sample ~]# tar zxvf \/root\/commands.tar.gz\u3000 \u2190 \u89e3\u5f00\u538b\u7f29\u7684\u547d\u4ee4\u5907\u4efd<\/p>\n

[root@sample ~]# \/usr\/local\/chkrootkit\/chkrootkit -p \/root\/commands|grep INFECTED\u3000\u2190 \u7528\u5907\u4efd\u7684\u547d\u4ee4\u8fd0\u884cchkrootkit <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u7136\u540e\u5728\u8fd0\u884c\u540e\u5220\u9664\u76f8\u5e94\u9057\u7559\u6587\u4ef6\u5373\u53ef\u3002 <\/p>\n","protected":false},"excerpt":{"rendered":"

< \u5165\u4fb5\u76d1\u6d4b\u7cfb\u7edf\u7684\u6784\u5efa\uff08 chkrootkit \uff09 > \uff08\u6700\u8fd1\u66f4\u65b0\u65e5\uff1a2006\/08\/24\uff09 \u524d\u3000\u3000\u8a00 \u6240\u8c13 rootkit \uff0c\u662f\u4e00\u7c7b\u5165\u4fb5\u8005\u7ecf\u5e38\u4f7f\u7528\u7684\u5de5\u5177\u3002\u8fd9\u7c7b\u5de5\u5177\u901a\u5e38\u975e\u5e38\u7684\u9690\u79d8\u3001\u4ee4\u7528\u6237\u4e0d...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-430","post","type-post","status-publish","format-standard","hentry","category-hacker"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.liangliang.org.cn\/index.php?rest_route=\/wp\/v2\/posts\/430","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.liangliang.org.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.liangliang.org.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.liangliang.org.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.liangliang.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=430"}],"version-history":[{"count":0,"href":"https:\/\/www.liangliang.org.cn\/index.php?rest_route=\/wp\/v2\/posts\/430\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.liangliang.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=430"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.liangliang.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=430"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.liangliang.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=430"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}