Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Windows System Audio Driver' = '"%WINDIR%\audio32hd.exe"'
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] 'EnableFirewall' = '00000000'
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
blocks the following features:
- User Account Control (UAC)
Executes the following:
- '%WINDIR%\audio32hd.exe'
- '%APPDATA%\WUD32Host.exe'
- '<SYSTEM32>\netsh.exe' Firewall set opmode disable
- '<SYSTEM32>\netsh.exe' advfirewall set allprofiles state off
Modifies file system:
Creates the following files:
- %APPDATA%\WUD32Host.exe
- %WINDIR%\audio32hd.exe
Sets the 'hidden' attribute to the following files:
- %APPDATA%\WUD32Host.exe
- %WINDIR%\audio32hd.exe
