Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Client' = '<SYSTEM32>\Client.exe'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\Start.lnk
Modifies file system:
Creates the following files:
- %TEMP%\RES2.tmp
- %TEMP%\vbc1.tmp
- C:\AUTOEXEC.BAT.exe
- <SYSTEM32>\Client.exe
- %TEMP%\yoyxcyln.out
- C:\ProgramData\R\AUTOEXEC.ico
- C:\R\Client.exe
- %TEMP%\yoyxcyln.cmdline
- %TEMP%\yoyxcyln.0.vb
Sets the 'hidden' attribute to the following files:
- C:\R\Client.exe
Deletes the following files:
- %TEMP%\vbc1.tmp
- %TEMP%\RES2.tmp
- %TEMP%\yoyxcyln.cmdline
Network activity:
Connects to:
- 'localhost':7777
Miscellaneous:
Creates and executes the following:
- '<SYSTEM32>\Client.exe'
Executes the following:
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES2.tmp" "%TEMP%\vbc1.tmp"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\yoyxcyln.cmdline"
