Win32.HLLW.Autoruner.52915

Added to the Dr.Web virus database: 2011-06-28

Virus description added: 2011-07-01

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SYSTEM\ControlSet001\Control\SafeBoot\Network] 'SecurityEssentialsScheduler' = '%APPDATA%\Microsoft\msses.exe'
[<HKLM>\SYSTEM\ControlSet001\Control\SafeBoot\Minimal] 'SecurityEssentialsScheduler' = '%APPDATA%\Microsoft\msses.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'SecurityEssentialsScheduler' = '%APPDATA%\Microsoft\msses.exe'

Creates the following files on removable media:

<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\RECYCLER\S-1-6-21-2434476501-1644491937-600003330-1213\autorun.exe
<Drive name for removable media>:\RECYCLER\S-1-6-21-2434476501-1644491937-600003330-1213\Desktop.ini

Malicious functions:

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

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

Creates and executes the following:

Modifies file system :

Creates the following files:

Sets the 'hidden' attribute to the following files:

<Drive name for removable media>:\RECYCLER\S-1-6-21-2434476501-1644491937-600003330-1213\autorun.exe
%APPDATA%\Microsoft\msses.exe

Network activity:

Connects to:

UDP:

Miscellaneous:

Searches for the following windows: