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Win32.HLLW.Autoruner.48591

Added to the Dr.Web virus database: 2011-04-30

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Control\Print\Providers\3435541880] 'Name' = '%TEMP%\3.tmp'
Malicious functions:
Creates and executes the following:
  • %HOMEPATH%\c.exe 
  • %HOMEPATH%\b.exe 
  • %HOMEPATH%\aYkr3VMYUA7o.exe 
Executes the following:
  • <SYSTEM32>\svchost.exe
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
  • <SYSTEM32>\spoolsv.exe
Modifies settings of Windows Internet Explorer:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1400' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1601' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'currentlevel' = '00000000'
Modifies file system :
Creates the following files:
  • %TEMP%\2.tmp
  • %WINDIR%\Temp\4.tmp
  • %HOMEPATH%\c.exe
  • %HOMEPATH%\aYkr3VMYUA7o.exe
  • %HOMEPATH%\b.exe
Deletes the following files:
  • <DRIVERS>\etc\hosts
  • %WINDIR%\Temp\4.tmp
  • %TEMP%\3.tmp
  • %HOMEPATH%\c.exe