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Win32.HLLW.Autoruner1.5144

Added to the Dr.Web virus database: 2013-05-10

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'HKCU' = ''
  • [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{Y34182YD-2008-G6GF-Y61F-A0S2K0N524I1}] 'StubPath' = '<SYSTEM32>\Temp\svchost.exe Restart'
  • [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{Y34182YD-2008-G6GF-Y61F-A0S2K0N524I1}] 'StubPath' = ''
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run] 'Policies1' = ''
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'Policies1' = ''
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'HKLM' = ''
Malicious functions:
Creates and executes the following:
  • '<SYSTEM32>\Temp\svchost.exe'
  • '%TEMP%\Crypted.exe'
  • '%TEMP%\server.exe'
  • '%TEMP%\Crypted.exe' (downloaded from the Internet)
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
Searches for windows to
detect analytical utilities:
  • ClassName: 'pediy06' WindowName: ''
  • ClassName: 'GBDYLLO' WindowName: ''
  • ClassName: 'OLLYDBG' WindowName: ''
Modifies file system :
Creates the following files:
  • %APPDATA%\logs.dat
  • %TEMP%\Crypted.exe
  • %TEMP%\UuU.uUu
  • %TEMP%\XxX.xXx
  • <SYSTEM32>\Temp\svchost.exe
  • %TEMP%\server.exe
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\Windows[1].exe
  • %TEMP%\XX--XX--XX.txt
Sets the 'hidden' attribute to the following files:
  • %APPDATA%\logs.dat
  • <SYSTEM32>\Temp\svchost.exe
Deletes the following files:
  • %TEMP%\XxX.xXx
  • <SYSTEM32>\Temp\svchost.exe
  • %TEMP%\XX--XX--XX.txt
  • %TEMP%\UuU.uUu
Network activity:
Connects to:
  • 'ra###.no-ip.biz':81
  • 'he#####9.fileave.com':80
  • 'localhost':1036
TCP:
HTTP GET requests:
  • he#####9.fileave.com/Windows.exe
UDP:
  • DNS ASK ra###.no-ip.biz
  • DNS ASK he#####9.fileave.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'Indicator' WindowName: ''