Exploit.Siggen2.36375

Technical Information

To ensure autorun and distribution

Sets the following service settings

[<HKLM>\System\CurrentControlSet\Services\MsRkNrL] 'Start' = '00000002'
[<HKLM>\System\CurrentControlSet\Services\MsRkNrL] 'ImagePath' = '<SYSTEM32>\wscript.exe //B "C:\autoexec.vbs"'

Creates the following services

'MsRkNrL' <SYSTEM32>\wscript.exe //B "C:\autoexec.vbs"

Malicious functions

Creates and executes the following (exploit)

'<SYSTEM32>\wscript.exe' //B "%TEMP%\rknrl.vbs"

Executes the following

'<SYSTEM32>\taskkill.exe' /f /im miner.exe
'<SYSTEM32>\taskkill.exe' /f /im myminer.exe
'<SYSTEM32>\taskkill.exe' /f /im myminera.exe
'<SYSTEM32>\taskkill.exe' /f /im myminern.exe

Modifies file system

Creates the following files

%TEMP%\dm6331.tmp
%WINDIR%\temp\radd551a.tmp
%WINDIR%\temp\radd2568.tmp
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\59o0eoqa\api[1]
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\t5levnel\playback[1].php
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\0o42hqll\dm6331[1].tmp
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\t5levnel\playback[2].php
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\t5levnel\rknrl[1].vbs
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\jh3iwefd\url[2].htm
%WINDIR%\temp\radfc5e9.tmp
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\jh3iwefd\api[1]
%WINDIR%\temp\rad67d77.tmp
%WINDIR%\temp\rad94f36.tmp
%WINDIR%\temp\rad40c24.tmp
%WINDIR%\temp\rad22823.tmp
%WINDIR%\temp\rad85663.tmp
%WINDIR%\temp\radc2446.tmp
%WINDIR%\temp\rad323c3.tmp
%WINDIR%\temp\rad63da9.tmp
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\jh3iwefd\dm6331[1].tmp
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\jh3iwefd\dm6331[2].tmp
%WINDIR%\temp\radd632e.tmp
%WINDIR%\temp\rada2f4d.tmp
%WINDIR%\temp\rad249f9.tmp
%WINDIR%\temp\rad84f0d.tmp
%WINDIR%\temp\rad02e6c.tmp
%TEMP%\winstart.vbs
%WINDIR%\temp\dm6331.tmp
%WINDIR%\temp\winstart.vbs
%WINDIR%\temp\rknrl.vbs
%TEMP%\rad163a7.tmp
%TEMP%\radb1249.tmp
%TEMP%\radb3339.tmp
%TEMP%\rad6a5b5.tmp
%TEMP%\rad3dfa8.tmp
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\jh3iwefd\rknrl[1].vbs
%WINDIR%\temp\rad95505.tmp
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\t5levnel\api[1]
%WINDIR%\temp\rad6d03c.tmp
%WINDIR%\temp\rad550bd.tmp
%WINDIR%\temp\radadb69.tmp
%WINDIR%\temp\rad4d53a.tmp
%WINDIR%\temp\rad813b9.tmp
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\59o0eoqa\url[1].htm
%WINDIR%\temp\rad7084a.tmp
%WINDIR%\temp\rad7dc79.tmp
%WINDIR%\temp\radcdb6a.tmp
%TEMP%\rknrl.vbs
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\jh3iwefd\url[1].htm
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\0o42hqll\rknrl[1].vbs

Deletes the following files

%TEMP%\dm6332.tmp
%LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\bzjx5bke\api[1]
%LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\0u8lpyu9\api[1]
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\jh3iwefd\dm6331[2].tmp
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\0o42hqll\rknrl[1].vbs
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\jh3iwefd\rknrl[1].vbs
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\jh3iwefd\dm6331[1].tmp
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\0o42hqll\dm6331[1].tmp
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\t5levnel\rknrl[1].vbs
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\jh3iwefd\url[2].htm
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\t5levnel\playback[2].php
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\t5levnel\playback[1].php
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\59o0eoqa\api[1]
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\59o0eoqa\url[1].htm
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\jh3iwefd\url[1].htm
%WINDIR%\temp\dm6332.tmp
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\jh3iwefd\api[1]
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\t5levnel\api[1]
%LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\bzjx5bke\url[1].htm
%LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\re1n75kr\playback[1].php

Moves the following files

from %TEMP%\rad163a7.tmp to %TEMP%\dm6332.tmp
from %WINDIR%\temp\rad6d03c.tmp to %WINDIR%\temp\dm6332.tmp

Substitutes the following files

%TEMP%\dm6332.tmp
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\t5levnel\api[1]
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\jh3iwefd\api[1]
%WINDIR%\temp\dm6332.tmp
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\jh3iwefd\url[1].htm
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\59o0eoqa\api[1]
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\t5levnel\playback[1].php
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\t5levnel\rknrl[1].vbs
<SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\content.ie5\0o42hqll\rknrl[1].vbs

Network activity

TCP

HTTP GET requests

http://ap#.##herscan.io/api?mo#############################################################################
http://ai########ill.aigoingtokill.club/ctrl/url.html
http://ai########ill.aigoingtokill.club/ctrl/playback.php
http://ai########ill.aigoingtokill.club/ctrl/file/DM6331.TMP
http://ai########ill.aigoingtokill.club/ctrl/file/rknrl.vbs

UDP

DNS ASK ap#.##herscan.io
DNS ASK ai########ill.aigoingtokill.club

Miscellaneous

Creates and executes the following

'<SYSTEM32>\wscript.exe' //B "%WINDIR%\TEMP\rknrl.vbs"
'<SYSTEM32>\wscript.exe' //B "%TEMP%\winstart.vbs"
'<SYSTEM32>\wscript.exe' //B "%WINDIR%\TEMP\winstart.vbs"
'<SYSTEM32>\wscript.exe' //B "%TEMP%\rknrl.vbs"' (with hidden window)
'<SYSTEM32>\taskkill.exe' /f /im miner.exe' (with hidden window)
'<SYSTEM32>\taskkill.exe' /f /im myminer.exe' (with hidden window)
'<SYSTEM32>\taskkill.exe' /f /im myminera.exe' (with hidden window)
'<SYSTEM32>\taskkill.exe' /f /im myminern.exe' (with hidden window)
'<SYSTEM32>\cmd.exe' /c del winstart\miner.exe /s /q' (with hidden window)
'<SYSTEM32>\cmd.exe' /c del %TEMP%\winstart\miner.exe /s /q' (with hidden window)
'<SYSTEM32>\cmd.exe' /c del winstart\myminer.exe /s /q' (with hidden window)
'<SYSTEM32>\cmd.exe' /c del %TEMP%\winstart\myminer.exe /s /q' (with hidden window)
'<SYSTEM32>\cmd.exe' /c del winstart\myminera.exe /s /q' (with hidden window)
'<SYSTEM32>\cmd.exe' /c del %TEMP%\winstart\myminera.exe /s /q' (with hidden window)

Executes the following

'<SYSTEM32>\cmd.exe' /c del winstart\miner.exe /s /q
'<SYSTEM32>\cmd.exe' /c del %TEMP%\winstart\miner.exe /s /q
'<SYSTEM32>\cmd.exe' /c del winstart\myminer.exe /s /q
'<SYSTEM32>\cmd.exe' /c del %TEMP%\winstart\myminer.exe /s /q
'<SYSTEM32>\cmd.exe' /c del winstart\myminera.exe /s /q
'<SYSTEM32>\cmd.exe' /c del %TEMP%\winstart\myminera.exe /s /q

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