Technical Information
To ensure autorun and distribution:
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\svchost.exe
Creates the following files on removable media:
- <Drive name for removable media>:\wkqxx.pif
- <Drive name for removable media>:\autorun.inf
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\fuaano.exe' = '%TEMP%\fuaano.exe:*:Enabled:ipsec'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
blocks execution of the following system utilities:
- Windows Task Manager (Taskmgr)
- Registry Editor (RegEdit)
blocks the following features:
- User Account Control (UAC)
- Windows Security Center
Creates and executes the following:
- '%TEMP%\svchost.exe'
- '%TEMP%\fuaano.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%\x7nqrz6l.cmdline"
Injects code into
the following system processes:
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
a large number of user processes.
Modifies file system :
Creates the following files:
- C:\autorun.inf
- %TEMP%\x7nqrz6l.out
- %TEMP%\x7nqrz6l.cmdline
- C:\gucyf.exe
- %TEMP%\x7nqrz6l.exe
- %TEMP%\RES2.tmp
- %TEMP%\vbc1.tmp
- %TEMP%\svchost.exe
- %TEMP%\fuaano.exe
- %TEMP%\bvR.resources
- %TEMP%\mbnm.exe
- %TEMP%\x7nqrz6l.0.vb
- %TEMP%\MSNPSharp.dll
- %TEMP%\Y1dy1.resources
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\wkqxx.pif
- C:\autorun.inf
- C:\gucyf.exe
Deletes the following files:
- %TEMP%\x7nqrz6l.cmdline
- %TEMP%\x7nqrz6l.exe
- %TEMP%\x7nqrz6l.0.vb
- %TEMP%\x7nqrz6l.out
- %TEMP%\vbc1.tmp
- %TEMP%\svchost.exe
- %TEMP%\fuaano.exe
- %TEMP%\RES2.tmp
- %TEMP%\mbnm.exe
Network activity:
Connects to:
- '17#.#3.169.14':80
Miscellaneous:
Searches for the following windows:
- ClassName: '' WindowName: '(null)'