Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\policies\Explorer\run] 'WinDefender' = '%APPDATA%\winbool.exe'
- [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run] 'WinDefender' = '%APPDATA%\winbool.exe'
- [<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'WinDefender' = '%APPDATA%\winbool.exe'
Creates or modifies the following files
- %APPDATA%\microsoft\windows\start menu\programs\startup\<File name>.exe
Malicious functions
To bypass firewall, removes or modifies the following registry keys
- [<HKLM>\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
- [<HKLM>\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\svchost.exe' = '%APPDATA%\svchost.exe:*:Enabled:Windows ...
- [<HKLM>\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\winbool.exe' = '%APPDATA%\winbool.exe:*:Enabled:Windows ...
Injects code into
the following user processes:
- svchost.exe
Modifies file system
Creates the following files
- %APPDATA%\svchost.exe
- %TEMP%\mwvswmtz.0.cs
- %TEMP%\mwvswmtz.cmdline
- %TEMP%\mwvswmtz.out
- %TEMP%\cscb826.tmp
- %TEMP%\resb827.tmp
- %TEMP%\mwvswmtz.dll
- %APPDATA%\winbool.exe
- <Current directory>\dns.bat
- %APPDATA%\data.dat
Deletes the following files
- %TEMP%\resb827.tmp
- %TEMP%\cscb826.tmp
- %TEMP%\mwvswmtz.0.cs
- %TEMP%\mwvswmtz.cmdline
- %TEMP%\mwvswmtz.out
- %TEMP%\mwvswmtz.dll
- <Current directory>\dns.bat
Modifies the HOSTS file.
Network activity
UDP
- DNS ASK 3g#####ious.no-ip.biz
Miscellaneous
Creates and executes the following
- '%APPDATA%\svchost.exe'
- '%WINDIR%\microsoft.net\framework\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\mwvswmtz.cmdline"' (with hidden window)
- '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESB827.tmp" "%TEMP%\CSCB826.tmp"' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c ""<Current directory>\DNS.bat" "' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\svchost.exe" /t REG_SZ /d "%APPDATA%\svchost.e...' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\winbool.exe" /t REG_SZ /d "%APPDATA%\winbool.e...' (with hidden window)
Executes the following
- '%WINDIR%\microsoft.net\framework\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\mwvswmtz.cmdline"
- '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESB827.tmp" "%TEMP%\CSCB826.tmp"
- '%WINDIR%\syswow64\cmd.exe' /c ""<Current directory>\DNS.bat" "
- '%WINDIR%\syswow64\ipconfig.exe' /flushdnsipconfig/releaseipconfig/renew
- '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
- '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\svchost.exe" /t REG_SZ /d "%APPDATA%\svchost.e...
- '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\winbool.exe" /t REG_SZ /d "%APPDATA%\winbool.e...
- '%WINDIR%\syswow64\reg.exe' ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\svchost.exe" /t REG_SZ /d "%APPDATA%\svchost.exe:*:En...
- '%WINDIR%\syswow64\reg.exe' ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
- '%WINDIR%\syswow64\reg.exe' ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\winbool.exe" /t REG_SZ /d "%APPDATA%\winbool.exe:*:En...
