Win32.HLLW.Autoruner.51742

Added to the Dr.Web virus database: 2011-06-14

Virus description added: 2011-06-14

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Kernel Drv' = '%APPDATA%\winlogon.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Kernel Drv' = '%APPDATA%\winlogon.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Microsoft Configuration Utility' = '%APPDATA%\mscfg\mscfg.exe'

Creates the following files on removable media:

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

Malicious functions:

Creates and executes the following:

Executes the following:

<SYSTEM32>\reg.exe ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Microsoft Configuration Utility" /t REG_SZ /d "%APPDATA%\mscfg\mscfg.exe" /f
<SYSTEM32>\cmd.exe /c """%TEMP%\SonNr.bat"" "

Modifies file system :

Creates the following files:

Sets the 'hidden' attribute to the following files:

<Drive name for removable media>:\DFGDFJJJJDFJDFJGFDJTURTURUTJJF\DFG-2352-26235-2322322-624621221-2622255\explorer.exe
%APPDATA%\winlogon.exe

Network activity:

Connects to:

UDP:

Miscellaneous:

Searches for the following windows: