Win32.HLLW.Autoruner.54124

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{8YX22I7N-HF2T-U363-JDAQ-PBU27D65AUO8}] 'StubPath' = ''
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe %WINDIR%\Regsvrkn9.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'HKLM' = ''
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'HKCU' = ''

Creates the following files on removable media:

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

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)

Creates and executes the following:

%TEMP%\lol2.exe
%TEMP%\lol1.exe

Executes the following:

<SYSTEM32>\attrib.exe +h +s +a +r U:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r U:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r T:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r T:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r W:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r W:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r V:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r V:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r Q:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r Q:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r P:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r P:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r S:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r S:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r R:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r R:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r X:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r %WINDIR%\Regsvrkn10.exe
<SYSTEM32>\attrib.exe +h +s +a +r %WINDIR%\Regsvrkn11.exe
<SYSTEM32>\attrib.exe +h +s +a +r <SYSTEM32>\Regsvrkn4.exe
<SYSTEM32>\attrib.exe +h +s +a +r <SYSTEM32>\Regsvrkn5.exe
<SYSTEM32>\attrib.exe +h +s +a +r %WINDIR%\Regsvrkn14.exe
<SYSTEM32>\attrib.exe +h +s +a +r %WINDIR%\Regsvrkn15.exe
<SYSTEM32>\attrib.exe +h +s +a +r %WINDIR%\Regsvrkn12.exe
<SYSTEM32>\attrib.exe +h +s +a +r %WINDIR%\Regsvrkn13.exe
<SYSTEM32>\attrib.exe +h +s +a +r Y:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r Z:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r X:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r Y:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r <SYSTEM32>\Regsvrkn2.exe
<SYSTEM32>\attrib.exe +h +s +a +r <SYSTEM32>\Regsvrkn3.exe
<SYSTEM32>\attrib.exe +h +s +a +r Z:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r <SYSTEM32>\Regsvrkn1.exe
<SYSTEM32>\attrib.exe +h +s +a +r E:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r E:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r <Drive name for removable media>:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r <Drive name for removable media>:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r F:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r G:\Regsvrkn.exe
<SYSTEM32>\rundll32.exe <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen %WINDIR%\698chym_bupbe.jpg
<SYSTEM32>\attrib.exe +h +s +a +r F:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r A:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r A:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r%WINDIR%\Regsvrkn9.exe
<SYSTEM32>\svchost.exe
<SYSTEM32>\attrib.exe +h +s +a +r C:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r C:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r B:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r B:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r G:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r M:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r M:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r L:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r L:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r O:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r O:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r N:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r N:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r I:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r I:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r H:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r H:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r K:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r K:\autorun.inf
<SYSTEM32>\attrib.exe +h +s +a +r J:\Regsvrkn.exe
<SYSTEM32>\attrib.exe +h +s +a +r J:\autorun.inf

Modifies settings of Windows Explorer:

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

Hides the following processes:

<SYSTEM32>\attrib.exe

Modifies file system :

Creates the following files:

%WINDIR%\Regsvrkn11.bat
%WINDIR%\Regsvrkn12.bat
<SYSTEM32>\Regsvrkn5.bat
%WINDIR%\Regsvrkn10.bat
%WINDIR%\Regsvrkn13.bat
%HOMEPATH%\Recent\698chym_bupbe.lnk
%WINDIR%\Regsvrkn16.bat
%WINDIR%\Regsvrkn14.bat
%WINDIR%\Regsvrkn15.bat
<SYSTEM32>\Regsvrkn4.bat
C:\autorun.inf
%WINDIR%\698chym_bupbe.jpg.exe
%TEMP%\lol1.exe
%TEMP%\lol2.exe
%WINDIR%\698chym_bupbe.jpg
<SYSTEM32>\Regsvrkn2.bat
<SYSTEM32>\Regsvrkn3.bat
%WINDIR%\InstallDir\Server.exe
<SYSTEM32>\Regsvrkn1.bat

Sets the 'hidden' attribute to the following files:

<Drive name for removable media>:\autorun.inf
%WINDIR%\InstallDir\Server.exe
%TEMP%\lol2.exe
C:\autorun.inf

Network activity:

Connects to:

'bu######huongvn.no-ip.org':81
'localhost':1036

UDP:

DNS ASK bu######huongvn.no-ip.org

Miscellaneous:

Searches for the following windows:

ClassName: 'Shell_TrayWnd' WindowName: ''
ClassName: 'ShImgVw:CPreviewWnd' WindowName: ''
ClassName: 'Indicator' WindowName: ''

Tecnologías

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Technical Information