Win32.HLLW.Autoruner2.6287

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'a5b7d1732258aca92064ed82c9f4dd20' = '"%APPDATA%\rundll32.exe" ..'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'a5b7d1732258aca92064ed82c9f4dd20' = '"%APPDATA%\rundll32.exe" ..'

Creates or modifies the following files:

Malicious functions:

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

[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\rundll32.exe' = '%APPDATA%\rundll32.exe:*:Enabled:rundll32.exe'

Creates and executes the following:

Executes the following:

'<SYSTEM32>\netsh.exe' firewall add allowedprogram "%APPDATA%\rundll32.exe" "rundll32.exe" ENABLE
'<SYSTEM32>\rundll32.exe' <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen %APPDATA%\66672_ss.jpg

Modifies file system :

Creates the following files:

Moves the following files:

from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch
from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch

Network activity:

Connects to:

UDP:

Miscellaneous:

Searches for the following windows: