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Win32.HLLW.Autoruner1.28926
Added to the Dr.Web virus database:
2012-10-27
Virus description added:
2012-10-29
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'ctfmon' = '%ALLUSERSPROFILE%\Application Data\services.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'krnl32 dllhost' = '<DRIVERS>\dllhost.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'svchost' = '<DRIVERS>\svchost.exe'
Creates or modifies the following files:
%ALLUSERSPROFILE%\Start Menu\Programs\Startup\dllhost.exe
%ALLUSERSPROFILE%\Start Menu\Programs\Startup\services.exe
%ALLUSERSPROFILE%\Start Menu\Programs\Startup\<Virus name>.exe
%ALLUSERSPROFILE%\Start Menu\Programs\Startup\svchost.exe
Creates the following files on removable media:
<Drive name for removable media>:\Autorun.exe
<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:
blocks execution of the following system utilities:
Windows Task Manager (Taskmgr)
Registry Editor (RegEdit)
Creates and executes the following:
%ALLUSERSPROFILE%\Application Data\services.exe
<DRIVERS>\dllhost.exe
<DRIVERS>\svchost.exe
Executes the following:
<SYSTEM32>\control.exe desktop
%WINDIR%\explorer.exe "::{20D04FE0-3AEA-1069-A2D8-08002B30309D}\::{21EC2020-3AEA-1069-A2DD-08002B30309D}\::{D20EA4E1-3957-11d2-A40B-0C5020524152}"
<SYSTEM32>\control.exe Mouse
<SYSTEM32>\winmine.exe
<SYSTEM32>\taskmgr.exe
<SYSTEM32>\control.exe Fonts
Modifies settings of Windows Explorer:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoControlPanel' = '00000004'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoDrives' = '00000004'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoControlPanel' = '00000001'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoFolderOptions' = '00000001'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoFind' = '00000001'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoClose' = '00000001'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoStartMenuMorePrograms' = '00000001'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoRun' = '00000001'
Modifies settings of Windows Internet Explorer:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] 'CurrentLevel' = '00000000'
Modifies file system :
Creates the following files:
<DRIVERS>\dllhost.exe
%ALLUSERSPROFILE%\Application Data\services.exe
C:\Autorun.exe
C:\Autorun.inf
<DRIVERS>\svchost.exe
Sets the 'hidden' attribute to the following files:
%ALLUSERSPROFILE%\Application Data\services.exe
C:\Autorun.exe
<Drive name for removable media>:\Autorun.exe
<DRIVERS>\dllhost.exe
C:\Autorun.inf
<Drive name for removable media>:\Autorun.inf
<DRIVERS>\svchost.exe
Deletes the following files:
%TEMP%\~DF80F9.tmp
%TEMP%\~DFB6D7.tmp
%TEMP%\~DF187B.tmp
%TEMP%\~DFB688.tmp
%TEMP%\~DF803F.tmp
%TEMP%\~DF7CE4.tmp
%TEMP%\~DF476F.tmp
%TEMP%\~DF4B49.tmp
%TEMP%\~DFD265.tmp
%TEMP%\~DF1799.tmp
%TEMP%\~DF305F.tmp
%TEMP%\~DF3397.tmp
%TEMP%\~DFB6E6.tmp
%TEMP%\~DF47.tmp
%TEMP%\~DFC17.tmp
%TEMP%\~DF173D.tmp
%TEMP%\~DFFE2A.tmp
%TEMP%\~DFDA9.tmp
%TEMP%\~DF124.tmp
%TEMP%\~DF63B4.tmp
%TEMP%\~DF61EE.tmp
%TEMP%\~DF647D.tmp
%TEMP%\~DF1EE7.tmp
%TEMP%\~DF22E6.tmp
%TEMP%\~DF2D4C.tmp
Miscellaneous:
Searches for the following windows:
ClassName: '' WindowName: 'Command Prompt'
ClassName: '' WindowName: 'Windows Task Manager'
ClassName: 'Shell_TrayWnd' WindowName: ''
ClassName: '' WindowName: 'System Configuration Utility'
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