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Win32.HLLW.Autoruner1.57855

Added to the Dr.Web virus database: 2013-10-08

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{95512R03-ABB7-11d2-9CBD-0O00FS7AH613}] 'stubpath' = ''
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices] 'Microsoft' = 'iexplore.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Microsoft' = 'iexplore.exe'
Creates or modifies the following files:
  • %WINDIR%\Tasks\system.vbs
  • %WINDIR%\Tasks\Setupt.exe
Creates the following files on removable media:
  • <Drive name for removable media>:\recycle.{645FF040-5081-101B-9F08-00AA002F954E}\nod32.exe
  • <Drive name for removable media>:\AUTORUN.INF
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '' = ':*:Enabled:Microsoft'
Creates and executes the following:
  • '<SYSTEM32>\iexplore.exe' 496 "<Full path to virus>"
Executes the following:
  • '%WINDIR%\regedit.exe' /S %TEMP%\1.reg
  • '<SYSTEM32>\net1.exe' stop "Security Center"
  • '<SYSTEM32>\net1.exe' stop SharedAccess
  • '<SYSTEM32>\cmd.exe' /c c:\a.bat
  • '<SYSTEM32>\net.exe' stop "Security Center"
  • '<SYSTEM32>\net.exe' stop SharedAccess
Searches for windows to
detect analytical utilities:
  • ClassName: '(null)' WindowName: 'Process Monitor - Sysinternals: www.sysinternals.com'
  • ClassName: 'PROCMON_WINDOW_CLASS' WindowName: '(null)'
  • ClassName: '(null)' WindowName: 'Registry Monitor - Sysinternals: www.sysinternals.com'
  • ClassName: 'RegmonClass' WindowName: '(null)'
  • ClassName: '(null)' WindowName: 'File Monitor - Sysinternals: www.sysinternals.com'
  • ClassName: 'GBDYLLO' WindowName: '(null)'
  • ClassName: 'OLLYDBG' WindowName: '(null)'
  • ClassName: 'FilemonClass' WindowName: '(null)'
  • ClassName: 'pediy06' WindowName: '(null)'
Modifies file system :
Creates the following files:
  • <SYSTEM32>\iexplore.exe
  • %TEMP%\1.reg
  • C:\a.bat
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\AUTORUN.INF
  • <SYSTEM32>\iexplore.exe
Deletes the following files:
  • %TEMP%\1.reg
Deletes itself.
Network activity:
Connects to:
  • '<Private IP address>':139
  • '<Private IP address>':1433
  • '<Private IP address>':445
  • '<Private IP address>':80
Miscellaneous:
Searches for the following windows:
  • ClassName: 'RegEdit_RegEdit' WindowName: '(null)'
  • ClassName: '18467-41' WindowName: '(null)'