Win32.HLLW.Silka.154

Added to the Dr.Web virus database: 2013-08-24

Virus description added: 2013-08-25

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Windows Firewall' = '%TEMP%\lsass.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Windows Firewall' = '%TEMP%\lsass.exe'

Creates the following files on removable media:

<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\TTHDHGC\DFG-2352-66235-2352322-634621321-6662355\364855.exe
<Drive name for removable media>:\TTHDHGC\DFG-2352-66235-2352322-634621321-6662355\Desktop.ini

Malicious functions:

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>:\TTHDHGC\DFG-2352-66235-2352322-634621321-6662355\364855.exe
%TEMP%\lsass.exe

Network activity:

Connects to:

UDP:

Miscellaneous:

Searches for the following windows: