Win32.HLLW.Autohit.12824

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe csrcs.exe'

Malicious functions:

To complicate detection of its presence in the operating system,

forces the system hide from view:

Creates and executes the following:

Executes the following:

Modifies file system :

Creates the following files:

%TEMP%\~ip.tmp
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\0D6B6PI5\checkip.dyndns[1].5498303762
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\0D6B6PI5\n09230945[1].asp
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\ULU3YH2D\whatismyip[1].8448980949
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\whatismyip[1].262492764974
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\checkip.dyndns[1].6848898162
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\SL6TKFAX\n09230945[1].asp
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\n09230945[1].asp
<SYSTEM32>\csrcs.exe
%TEMP%\chfkgqh
%TEMP%\aut1.tmp
%TEMP%\suicide.bat
<SYSTEM32>\autorun.inf
%TEMP%\vnyempb
%TEMP%\aut2.tmp

Sets the 'hidden' attribute to the following files:

Deletes the following files:

%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\0D6B6PI5\n09230945[1].asp
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\n09230945[1].asp
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\SL6TKFAX\n09230945[1].asp
%TEMP%\~ip.tmp
%TEMP%\chfkgqh
%TEMP%\aut1.tmp
%TEMP%\vnyempb
%TEMP%\aut2.tmp

Deletes itself.

Network activity:

Connects to:

TCP:

HTTP GET requests:

UDP: