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Profil

Win32.Grenail

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

Virus description added:

Technical Information

To ensure autorun and distribution
Creates or modifies the following files
  • %WINDIR%\win.ini
Modifies file system
Creates the following files
  • %ProgramFiles(x86)%\gd\svchust.exe
  • %ProgramFiles(x86)%\gd\svchhst.exe
  • %ProgramFiles(x86)%\gd\svchdst.exe
  • %TEMP%\coma534.tmp
  • %WINDIR%\setgqg.exe
  • %ProgramFiles(x86)%\gd\xduyefda.zip
  • %ProgramFiles(x86)%\gd\svchest7.uzy
  • %ProgramFiles(x86)%\gd\mswinsck.ocx
  • %ProgramFiles(x86)%\gd\clist.dat
  • %WINDIR%\syswow64\mswinsck.ocx
  • %TEMP%\comac85.tmp
  • %TEMP%\molp.tpk
  • %WINDIR%\syswow64\molp.tpk
  • %WINDIR%\syswow64\mshtml.dll.mod
Sets the 'hidden' attribute to the following files
  • %ProgramFiles(x86)%\gd\svchest7.uzy
Deletes the following files
  • %ProgramFiles(x86)%\gd\xduyefda.zip
  • %ProgramFiles(x86)%\gd\mswinsck.ocx
  • %ProgramFiles(x86)%\gd\clist.dat
Network activity
Connects to
  • 'ba##u.com':80
  • 'up.##ianfa.com':8080
  • 'ps#.##static.com':443
TCP
HTTP GET requests
  • http://www.ba##u.com/
Other
  • 'ps#.##static.com':443
UDP
  • DNS ASK ba##u.com
  • DNS ASK up.##ianfa.com
  • DNS ASK ps#.##static.com
Miscellaneous
Searches for the following windows
  • ClassName: 'EDIT' WindowName: ''
  • ClassName: '54321' WindowName: '12345'
  • ClassName: '' WindowName: '12345'
  • ClassName: 'TWINCONTROL' WindowName: 'µØÏ³ÇÓëÓÂÊ¿'
  • ClassName: 'MS_AutodialMonitor' WindowName: ''
  • ClassName: 'MS_WebCheckMonitor' WindowName: ''
Creates and executes the following
  • '%ProgramFiles(x86)%\gd\svchust.exe'
  • '%ProgramFiles(x86)%\gd\svchhst.exe'
  • '%ProgramFiles(x86)%\gd\svchdst.exe'
  • '%WINDIR%\setgqg.exe'
  • '%ProgramFiles(x86)%\gd\svchest7.uzy'
Executes the following
  • '%WINDIR%\setgqg.exe' ' (with hidden window)