Win32.HLLW.Autoruner1.24769

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run] '1' = '%WINDIR%\knight2.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe knight2.exe'

Creates the following files on removable media:

<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\knight.exe

Malicious functions:

To complicate detection of its presence in the operating system,

forces the system hide from view:

hidden files

blocks execution of the following system utilities:

Command Prompt (CMD)
Windows Task Manager (Taskmgr)

blocks the following features:

System Restore (SR)

Executes the following:

<SYSTEM32>\attrib.exe +h +s +a +r S:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r R:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r R:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r T:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r T:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r S:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r Q:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r O:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r O:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r N:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r Q:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r P:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r P:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r Y:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r Y:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r X:\autorun.inf
<SYSTEM32>\shutdown.exe -r -t 00
<SYSTEM32>\attrib.exe +h +s +a +r Z:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r Z:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r X:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r V:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r U:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r U:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r W:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r W:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r V:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r N:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r E:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r E:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r <Drive name for removable media>:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r G:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r F:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r F:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r <Drive name for removable media>:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r B:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r A:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r A:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r C:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r C:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r B:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r L:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r K:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r K:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r M:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r M:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r L:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r J:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r H:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r H:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r G:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r J:\knight.exe
<SYSTEM32>\attrib.exe +h +s +a +r I:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r I:\knight.exe

Modifies settings of Windows Explorer:

[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoRun' = '00000001'

Attempts to shut down the Windows operating system.

Modifies file system :

Creates the following files:

C:\knight.exe
C:\autorun.inf
<SYSTEM32>\knight2.exe
%WINDIR%\knight2.exe

Sets the 'hidden' attribute to the following files:

<Drive name for removable media>:\knight.exe
<Drive name for removable media>:\autorun.inf
C:\knight.exe
C:\autorun.inf

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Technical Information