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Win32.HLLW.Autoruner2.9725

Added to the Dr.Web virus database: 2014-03-04

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{F9C0568A-0146-9ACE-2347-9ACE13568ACD}] 'Stubpath' = ''
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run] 'imehelp' = ''
Creates the following files on removable media:
  • <Drive name for removable media>:\system.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:
  • hidden files
Creates and executes the following:
  • '%PROGRAM_FILES%\Internet Explorer\Update2.exe'
  • '%PROGRAM_FILES%\Internet Explorer\Update3.exe'
  • '%WINDIR%\Web\svchost.exe'
  • '%PROGRAM_FILES%\Internet Explorer\Update1.exe'
  • '%PROGRAM_FILES%\Internet Explorer\Update3.exe' (downloaded from the Internet)
  • '%PROGRAM_FILES%\Internet Explorer\Update1.exe' (downloaded from the Internet)
  • '%PROGRAM_FILES%\Internet Explorer\Update2.exe' (downloaded from the Internet)
Executes the following:
  • '<SYSTEM32>\cmd.exe' /c ~Lying.bAt
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
Terminates or attempts to terminate
the following user processes:
  • 360tray.exe
Modifies file system :
Creates the following files:
  • %PROGRAM_FILES%\Internet Explorer\Update2.exe
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\Md6[1].exe
  • %PROGRAM_FILES%\Internet Explorer\Update3.exe
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\smalldown[1].exe
  • <Current directory>\~Lying.bAt
  • %WINDIR%\Web\svchost.exe
  • %PROGRAM_FILES%\Internet Explorer\Update1.exe
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\Md5[1].exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\Autorun.inf
  • <Drive name for removable media>:\system.exe
  • %WINDIR%\Web\svchost.exe
  • <Current directory>\~Lying.bAt
Deletes itself.
Network activity:
Connects to:
  • 'cp###t.2288.org':80
  • 'localhost':1035
TCP:
HTTP GET requests:
  • cp###t.2288.org/new/smalldown.exe
  • cp###t.2288.org/new/Md6.exe
  • cp###t.2288.org/new/Md5.exe
UDP:
  • DNS ASK cp###t.2288.org
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Tapplication' WindowName: '????????????????'
  • ClassName: 'ZAFrameWnd' WindowName: 'ZoneAlarm'
  • ClassName: 'Shell_TrayWnd' WindowName: '(null)'
  • ClassName: 'TForm1' WindowName: '(null)'
  • ClassName: '(null)' WindowName: '???????????? KV2007??????????'
  • ClassName: '(null)' WindowName: 'Symantec AntiVirus ??????'
  • ClassName: 'TfLockDownMain' WindowName: '(null)'
  • ClassName: 'RavMonClass' WindowName: 'RavMon.exe'

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