Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'MSRFS' = '"%WINDIR%\msrfs.exe"'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\autorun.vbs
- <Drive name for removable media>:\autorun.sys
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%WINDIR%\msrfs.exe' = '%WINDIR%\msrfs.exe:*:Enabled:msrfs'
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Creates and executes the following:
- %WINDIR%\msrfs.exe
Modifies file system :
Creates the following files:
- %WINDIR%\pthreadVSE2.dll
- %WINDIR%\msrfs.exe
- %WINDIR%\sysbackup.dat
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.sys
Network activity:
UDP:
- DNS ASK O(############### -O�O�-�( � �� �
- DNS ASK sh###.wowdns.com
- '<Private IP address>':1036
