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Win32.HLLW.Autoruner1.37008

Added to the Dr.Web virus database: 2013-05-13

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'google' = 'http://advgoogle.blogspot.com/'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Yahoo Messengger' = '<SYSTEM32>\SICHOST.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe SICHOST.exe'
Creates or modifies the following files:
  • %WINDIR%\Tasks\At1.job
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\SICHOST.exe
  • <Drive name for removable media>:\New Folder.exe
Malicious functions:
Executes the following:
  • '<SYSTEM32>\at.exe' 09:00 /interactive /EVERY:m,t,w,th,f,s,su <SYSTEM32>\SICHOST.exe
  • '<SYSTEM32>\at.exe' /delete /yes
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\setting[1].ini
  • <SYSTEM32>\setting.ini
  • <SYSTEM32>\autorun.ini
  • <SYSTEM32>\SICHOST.exe
  • %WINDIR%\SICHOST.exe
Sets the 'hidden' attribute to the following files:
  • <SYSTEM32>\setting.ini
  • <Drive name for removable media>:\autorun.inf
  • <SYSTEM32>\SICHOST.exe
  • <SYSTEM32>\autorun.ini
Network activity:
Connects to:
  • 'lo#####ring3.t35.com':80
TCP:
HTTP GET requests:
  • lo#####ring3.t35.com/setting.ini
UDP:
  • DNS ASK lo#####ring3.t35.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''