Technical Information
To ensure autorun and distribution
Creates or modifies the following files
- <SYSTEM32>\tasks\updates\rywtjgyxx
Malicious functions
Injects code into
the following system processes:
- %WINDIR%\explorer.exe
the following user processes:
- iexplore.exe
Hooks functions
in browsers
- iexplore.exe process, wininet.dll module
Terminates or attempts to terminate
the following system processes:
- %WINDIR%\syswow64\autoconv.exe
Modifies file system
Creates the following files
- %APPDATA%\rywtjgyxx.exe
- %TEMP%\tmp62d7.tmp
Deletes the following files
- %TEMP%\tmp62d7.tmp
- %WINDIR%\microsoft.net\framework\v4.0.30319\regsvcs.exe
Miscellaneous
Creates and executes the following
- '%WINDIR%\syswow64\schtasks.exe' /Create /TN "Updates\RyWTjgYxX" /XML "%TEMP%\tmp62D7.tmp"' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\schtasks.exe' /Create /TN "Updates\RyWTjgYxX" /XML "%TEMP%\tmp62D7.tmp"
- '%WINDIR%\microsoft.net\framework\v4.0.30319\regsvcs.exe'
- '%WINDIR%\syswow64\wininit.exe'
- '%WINDIR%\syswow64\cmd.exe' del "%WINDIR%\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
