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Win32.HLLM.MyDoom.1332

Aggiunto al database dei virus Dr.Web: 2014-10-02

La descrizione è stata aggiunta:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,%APPDATA%\Update\Windows Update.exe,'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Update' = '%APPDATA%\Update\Windows Update.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Update' = '%APPDATA%\Update\Windows Update.exe'
Malicious functions:
Creates and executes the following:
  • '%TEMP%\Windows Check 6.exe'
  • '%TEMP%\Windows Check 1.exe'
Executes the following:
  • '<SYSTEM32>\ntvdm.exe' -f -i3
  • '<SYSTEM32>\ntvdm.exe' -f -i4
  • '<SYSTEM32>\ntvdm.exe' -f -i1
  • '<SYSTEM32>\ntvdm.exe' -f -i2
Modifies file system :
Creates the following files:
  • %WINDIR%\Temp\scs6.tmp
  • %WINDIR%\Temp\scs5.tmp
  • %TEMP%\Windows Check 5.exe
  • %TEMP%\Windows Check 6.exe
  • %APPDATA%\Update\Windows Update.exe
  • %WINDIR%\Temp\scs8.tmp
  • %WINDIR%\Temp\scs7.tmp
  • %WINDIR%\Temp\scs4.tmp
  • %TEMP%\Windows Check 3.exe
  • %TEMP%\Windows Check 2.exe
  • %TEMP%\Windows Check 1.exe
  • %WINDIR%\Temp\scs1.tmp
  • %WINDIR%\Temp\scs3.tmp
  • %WINDIR%\Temp\scs2.tmp
  • %TEMP%\Windows Check 4.exe
Deletes the following files:
  • %WINDIR%\Temp\scs6.tmp
  • %WINDIR%\Temp\scs5.tmp
  • %WINDIR%\Temp\scs8.tmp
  • %WINDIR%\Temp\scs7.tmp
  • %WINDIR%\Temp\scs4.tmp
  • %WINDIR%\Temp\scs2.tmp
  • %WINDIR%\Temp\scs3.tmp
  • %WINDIR%\Temp\scs1.tmp
Network activity:
Connects to:
  • 'ch####p.dyndns.org':80
  • 'wp#d':80
TCP:
HTTP GET requests:
  • ch####p.dyndns.org/
  • wp#d/wpad.dat
UDP:
  • DNS ASK ch####p.dyndns.org
  • DNS ASK wp#d
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'VMDragDetectWndClass' WindowName: ''
  • ClassName: 'Indicator' WindowName: ''
  • ClassName: 'ConsoleWindowClass' WindowName: 'ntvdm-bc4.bc8.3b0008'
  • ClassName: 'ConsoleWindowClass' WindowName: 'ntvdm-b90.b94.380001'
  • ClassName: 'ConsoleWindowClass' WindowName: 'ntvdm-ba4.ba8.390002'
  • ClassName: 'ConsoleWindowClass' WindowName: 'ntvdm-bb4.bb8.3a0007'