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Win32.HLLW.Autoruner1.4727

Aggiunto al database dei virus Dr.Web: 2011-11-29

La descrizione è stata aggiunta:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'wextract_cleanup0' = 'rundll32.exe <SYSTEM32>\advpack.dll,DelNodeRunDLL32 "%TEMP%\IXP000.TMP\"'
Creates the following files on removable media:
  • <Drive name for removable media>:\xscli.exe
  • <Drive name for removable media>:\autorun.inf
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • <Auxiliary element>
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\IXP000.TMP\BIFROS~1.EXE' = '%TEMP%\IXP000.TMP\BIFROS~1.EXE:*:Enabled:ipsec'
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
blocks the following features:
  • User Account Control (UAC)
Creates and executes the following:
  • %TEMP%\IXP000.TMP\BIFROS~1.EXE 
Executes the following:
  • <SYSTEM32>\rundll32.exe <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen c:\53f4bf4db250be0c5ef37206815edda5.jpg
Injects code into
the following system processes:
  • <SYSTEM32>\cscript.exe
a large number of user processes.
Modifies file system :
Creates the following files:
  • C:\53f4bf4db250be0c5ef37206815edda5.jpg
  • C:\Raccourci vers server.lnk
  • %TEMP%\winksew.exe
  • %TEMP%\0001C33B_Rar\BIFROS~1.EXE
  • %TEMP%\IXP000.TMP\BIFROS~1.EXE
  • %TEMP%\0001B6F7_Rar\BIFROS~1.EXE
  • %TEMP%\0001BF53_Rar\BIFROS~1.EXE
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\xscli.exe
  • <Drive name for removable media>:\autorun.inf
Deletes the following files:
  • %TEMP%\IXP000.TMP\BIFROS~1.EXE
  • %TEMP%\winksew.exe
  • %TEMP%\0001B6F7_Rar\BIFROS~1.EXE
Miscellaneous:
Searches for the following windows:
  • ClassName: 'ShImgVw:CPreviewWnd' WindowName: ''
  • ClassName: 'EDIT' WindowName: ''
  • ClassName: 'Shell_TrayWnd' WindowName: ''