Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Client' = '%APPDATA%\winrun.exe'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\Client.exe
- %HOMEPATH%\Start Menu\Programs\Startup\Client.lnk
- %HOMEPATH%\Start Menu\Programs\Startup\Client.vbs
Malicious functions:
Executes the following:
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES4.tmp" "%TEMP%\vbc3.tmp"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\yh0vxbbq.cmdline"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES6.tmp" "%TEMP%\vbc5.tmp"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\nqw_mfv7.cmdline"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\vljcos_z.cmdline"
- '%APPDATA%\winrun.exe'
- '<SYSTEM32>\schtasks.exe' /create /sc minute /mo 1 /tn "Client" /tr "%APPDATA%\winrun.exe"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES2.tmp" "%TEMP%\vbc1.tmp"
Modifies file system:
Creates the following files:
- %APPDATA%\Random\Optional\Launch Internet Explorer Browser.exe
- %TEMP%\nqw_mfv7.0.vb
- %TEMP%\vbc3.tmp
- %TEMP%\RES4.tmp
- %TEMP%\nqw_mfv7.cmdline
- %TEMP%\RES6.tmp
- %APPDATA%\Random\Optional\Windows Media Player.exe
- %TEMP%\nqw_mfv7.out
- %TEMP%\vbc5.tmp
- %TEMP%\yh0vxbbq.out
- %TEMP%\vljcos_z.cmdline
- %TEMP%\vljcos_z.out
- %APPDATA%\winrun.exe
- %TEMP%\vljcos_z.0.vb
- %TEMP%\vbc1.tmp
- %TEMP%\yh0vxbbq.0.vb
- %TEMP%\yh0vxbbq.cmdline
- %TEMP%\RES2.tmp
- %APPDATA%\Client.exe
Sets the 'hidden' attribute to the following files:
- %APPDATA%\winrun.exe
- <Full path to file>
Deletes the following files:
- %TEMP%\RES6.tmp
- %TEMP%\yh0vxbbq.out
- %TEMP%\yh0vxbbq.cmdline
- %TEMP%\vbc5.tmp
- %TEMP%\nqw_mfv7.cmdline
- %TEMP%\nqw_mfv7.out
- %TEMP%\nqw_mfv7.0.vb
- %TEMP%\yh0vxbbq.0.vb
- %TEMP%\vljcos_z.0.vb
- %TEMP%\vbc1.tmp
- %TEMP%\RES2.tmp
- %TEMP%\vljcos_z.out
- %TEMP%\vbc3.tmp
- %TEMP%\RES4.tmp
- %TEMP%\vljcos_z.cmdline
Moves the following files:
- from %APPDATA%\Microsoft\Internet Explorer\Quick Launch\Windows Media Player.lnk to %APPDATA%\Random\Optional\Windows Media Player.lnk
- from %APPDATA%\Microsoft\Internet Explorer\Quick Launch\Launch Internet Explorer Browser.lnk to %APPDATA%\Random\Optional\Launch Internet Explorer Browser.lnk
Network activity:
Connects to:
- 'nj####ca.ddns.net':333
UDP:
- DNS ASK nj####ca.ddns.net
