Win32.HLLW.Autoruner.28345

Added to the Dr.Web virus database: 2010-09-13

Virus description added: 2012-11-20

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'HOYHOWFzHK4' = '%TEMP%\DIhl9.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Windows Update System' = '%APPDATA%\winlogon.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Windows Update System' = '%APPDATA%\winlogon.exe'
[<HKCU>\Software\Microsoft\Active Setup\Installed Components\{YO1A3AVR-P8QI-QLOV-Q3UH-4SYZA4FBXBRB}] 'StubPath' = '%TEMP%\DIhl9.exe'
[<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{YO1A3AVR-P8QI-QLOV-Q3UH-4SYZA4FBXBRB}] 'StubPath' = '%TEMP%\DIhl9.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'xYw6n7QaK8VAE' = '%TEMP%\DIhl9.exe'

Creates the following files on removable media:

<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\GGGKGKGAEXRGYH\DFG-2352-26235-2322322-624621221-2622255\usbBlock.exe
<Drive name for removable media>:\GGGKGKGAEXRGYH\DFG-2352-26235-2322322-624621221-2622255\Desktop.ini

Malicious functions:

Creates and executes the following:

Executes the following:

Modifies file system :

Creates the following files:

Sets the 'hidden' attribute to the following files:

<Drive name for removable media>:\GGGKGKGAEXRGYH\DFG-2352-26235-2322322-624621221-2622255\usbBlock.exe
%TEMP%\DIhl9.exe
%APPDATA%\winlogon.exe

Network activity:

Connects to:

UDP:

Miscellaneous:

Searches for the following windows: