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Profil

Win32.HLLW.Autoruner1.43298

Added to the Dr.Web virus database: 2013-06-27

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'load' = '%WINDIR%\Loikaw.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] ' * ' = '%APPDATA%\control.exe'
  • [<HKLM>\SOFTWARE\Classes\.cmd] '' = 'soesoe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,%WINDIR%\Loikaw.exe'
  • [<HKLM>\SOFTWARE\Classes\.bat] '' = 'soesoe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\Loikawhacking.day.com
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
  • file extensions
blocks execution of the following system utilities:
  • Windows Task Manager (Taskmgr)
  • Registry Editor (RegEdit)
Creates and executes the following:
  • '%WINDIR%\%USERNAME%.exe'
  • '%APPDATA%\control.exe'
Modifies settings of Windows Explorer:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderOptions' = '00000001'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFind' = '00000001'
Forces autoplay for removable media.
Modifies file system :
Creates the following files:
  • <LS_APPDATA>\Microsoft\CD Burning\autorun.inf
  • <LS_APPDATA>\Microsoft\CD Burning\Mp3.exe
  • C:\Temp.pif
  • C:\autorun.inf
  • %HOMEPATH%\Desktop\Virus Information.txt
  • <SYSTEM32>\Iexplorer.exe
  • %APPDATA%\control.exe
  • <SYSTEM32>\extramain.exe
  • %WINDIR%\%USERNAME%.exe
  • %WINDIR%\Loikaw.exe
Sets the 'hidden' attribute to the following files:
  • <LS_APPDATA>\Microsoft\CD Burning\autorun.inf
  • <Drive name for removable media>:\autorun.inf
  • C:\autorun.inf
  • %WINDIR%\%USERNAME%.exe
  • %APPDATA%\control.exe
  • <SYSTEM32>\Iexplorer.exe
  • <SYSTEM32>\extramain.exe
Deletes the following files:
  • %APPDATA%\control.exe
  • C:\Temp.pif
  • %WINDIR%\Loikaw.exe
  • <SYSTEM32>\Iexplorer.exe
  • <SYSTEM32>\extramain.exe
Moves the following files:
  • from %APPDATA%\control.exe to %APPDATA%\control.exe
Miscellaneous:
Searches for the following windows:
  • ClassName: '' WindowName: '(null)'
  • ClassName: 'Shell_TrayWnd' WindowName: '(null)'