Win32.HLLW.Autoruner1.10286

Added to the Dr.Web virus database: 2011-12-29

Virus description added: 2011-12-29

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,C:\\winlogon.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'winlogon' = 'C:\\winlogon.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'winlogon' = 'C:\\winlogon.exe'

Creates the following files on removable media:

Malicious functions:

Creates and executes the following:

Executes the following:

<SYSTEM32>\netsh.exe firewall add allowedprogram "C:\\winlogon.exe" winlogon Enable

Modifies file system :

Creates the following files:

Sets the 'hidden' attribute to the following files:

Deletes the following files:

Deletes itself.

Network activity:

Connects to:

UDP:

Miscellaneous:

Searches for the following windows: