Win32.HLLW.Phorpiex.4

Added to the Dr.Web virus database: 2011-04-02

Virus description added: 2012-01-09

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'MicrosoftServiceUpdates' = '%HOMEPATH%\Microsoft-Driver-1-82-3875-8725-4265\winsvn.exe'

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\AuthorizedApplications\List] '%HOMEPATH%\Microsoft-Driver-1-82-3875-8725-4265\winsvn.exe' = '%HOMEPATH%\Microsoft-Driver-1-82-3875-8725-4265\winsvn.exe:*:Enabled:MicrosoftServiceUpdates'

Creates and executes the following:

Modifies file system :

Creates the following files:

Sets the 'hidden' attribute to the following files:

Network activity:

Connects to:

UDP:

Miscellaneous:

Searches for the following windows: