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Win32.HLLW.Autoruner2.16159

Added to the Dr.Web virus database: 2014-07-16

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '5bd9c1973b0a052f58d168640f1fa030' = '"%TEMP%\FireFoxPortable.exe" ..'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '5bd9c1973b0a052f58d168640f1fa030' = '"%TEMP%\FireFoxPortable.exe" ..'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\5bd9c1973b0a052f58d168640f1fa030.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\FireFoxPortable.exe' = '%TEMP%\FireFoxPortable.exe:*:Enabled:FireFoxPortable.exe'
Creates and executes the following:
  • '%TEMP%\FireFoxPortable.exe'
  • '%WINDIR%\imgnoip.exe'
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\FireFoxPortable.exe" "FireFoxPortable.exe" ENABLE
  • '<SYSTEM32>\rundll32.exe' <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen %WINDIR%\ahaha.jpg
Modifies file system :
Creates the following files:
  • %HOMEPATH%\Recent\ahaha.lnk
  • %HOMEPATH%\Recent\WINDOWS.lnk
  • %TEMP%\FireFoxPortable.exe
  • %WINDIR%\imgnoip.exe
  • %TEMP%\aut1.tmp
  • %WINDIR%\ahaha.jpg
  • %TEMP%\aut2.tmp
Deletes the following files:
  • %TEMP%\aut2.tmp
  • %TEMP%\aut1.tmp
Network activity:
Connects to:
  • 'tr####.no-ip.org':5552
UDP:
  • DNS ASK tr####.no-ip.org
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'
  • ClassName: 'Shell_TrayWnd' WindowName: '(null)'
  • ClassName: 'ShImgVw:CPreviewWnd' WindowName: '(null)'
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