Win32.HLLW.Autoruner1.12052

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Active Setup\Installed Components\{77DDEFF8-EEDC-B6A2-B2BE-FFC2A4FEC8BA}] 'StubPath' = '%APPDATA%\sysfan.exe'
[<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{77DDEFF8-EEDC-B6A2-B2BE-FFC2A4FEC8BA}] 'StubPath' = '%APPDATA%\sysfan.exe'

Malicious functions:

To bypass firewall, removes or modifies the following registry keys:

[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\sysfan.exe' = '%APPDATA%\sysfan.exe:*:Enabled:Windows Messanger'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '<Full path to virus>:*:Enabled:Windows Messanger'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'

Executes the following:

<SYSTEM32>\reg.exe ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\sysfan.exe" /t REG_SZ /d "%APPDATA%\sysfan.exe:*:Enabled:Windows Messanger" /f
<SYSTEM32>\reg.exe ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "<Full path to virus>" /t REG_SZ /d "<Full path to virus>:*:Enabled:Windows Messanger" /f
<SYSTEM32>\reg.exe ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f

Modifies file system :

Creates the following files:

Network activity:

Connects to:

UDP: