Win32.HLLW.Texmer.218

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Yahoo Messengger' = '<SYSTEM32>\SSVICHOSST.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe SSVICHOSST.exe'

Creates or modifies the following files:

Creates the following files on removable media:

Malicious functions:

To complicate detection of its presence in the operating system,

blocks execution of the following system utilities:

Executes the following:

<SYSTEM32>\at.exe 09:00 /interactive /EVERY:m,t,w,th,f,s,su <SYSTEM32>\SSVICHOSST.exe
<SYSTEM32>\at.exe /delete /yes

Modifies settings of Windows Explorer:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NofolderOptions' = '00000001'

Modifies file system :

Creates the following files:

%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\setting[1].nql
<SYSTEM32>\setting.ini
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\setting[1].nql
<SYSTEM32>\SSVICHOSST.exe
%WINDIR%\SSVICHOSST.exe
<SYSTEM32>\autorun.ini

Sets the 'hidden' attribute to the following files:

Network activity:

Connects to:

TCP:

HTTP GET requests:

UDP:

Miscellaneous:

Searches for the following windows: