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Profil

Win32.HLLW.Autoruner1.46370

Added to the Dr.Web virus database: 2013-07-16

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'SYS4' = '<SYSTEM32>\bad3.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Msmsgs' = '<SYSTEM32>\Msmsgs.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'SYS3' = '<SYSTEM32>\bad2.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'SYS1' = '<SYSTEM32>\system.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'SYS2' = '<SYSTEM32>\bad1.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\system.exe
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)
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:
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\bad1[1].exe
  • <SYSTEM32>\msmsgs.exe
  • %WINDIR%\autorun.inf
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\system.exe
  • <SYSTEM32>\msmsgs.exe
  • %WINDIR%\autorun.inf
  • <Drive name for removable media>:\autorun.inf
Network activity:
Connects to:
  • 'pp#.th.gs':80
TCP:
HTTP GET requests:
  • pp#.th.gs/web-p/pt/file/bad1.exe
UDP:
  • DNS ASK pp#.th.gs