Win32.HLLW.Autoruner1.28338

To ensure autorun and distribution:

Creates the following files on removable media:

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\AuthorizedApplications\List] '%WINDIR%\Explorer.EXE' = '%WINDIR%\Explorer.EXE:*:Enabled:ipsec'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '<Full path to virus>:*: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:

blocks execution of the following system utilities:

blocks the following features:

Executes the following:

Injects code into

the following system processes:

a large number of user processes.

Modifies file system :

Creates the following files:

<DRIVERS>\hiojnn.sys
%APPDATA%\Microsoft\Crypto\RSA\S-1-5-21-2052111302-484763869-725345543-1003\88603cb2913a7df3fbd16b5f958e6447_23ef5514-3059-436f-a4a7-4cefaab20eb1
%TEMP%\winyaku.exe
%TEMP%\cbgg.exe
%TEMP%\923BBB52
%APPDATA%\Microsoft\Protect\S-1-5-21-2052111302-484763869-725345543-1003\Preferred
%APPDATA%\Microsoft\Protect\S-1-5-21-2052111302-484763869-725345543-1003\cc5cafeb-c4c9-469a-9d2f-022e0bf8bf0f

Sets the 'hidden' attribute to the following files:

Deletes the following files: