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Win32.HLLW.Autoruner.51613

Aggiunto al database dei virus Dr.Web: 2011-06-10

La descrizione è stata aggiunta:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Windows SafeAssist' = '%APPDATA%\winlogon.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Windows SafeAssist' = '%APPDATA%\winlogon.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Windows Serivces' = '%APPDATA%\Microsoft\#Services.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\driver\info\explorer.exe
  • <Drive name for removable media>:\driver\info\Desktop.ini
Malicious functions:
Creates and executes the following:
  • %APPDATA%\winlogon.exe 
  • %APPDATA%\Microsoft\#Services.exe 
Executes the following:
  • <SYSTEM32>\reg.exe ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Windows Serivces" /t REG_SZ /d "%APPDATA%\Microsoft\#Services.exe" /f
  • <SYSTEM32>\cmd.exe /c """%TEMP%\XdGVs.bat"" "
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
Modifies file system :
Creates the following files:
  • %APPDATA%\winlogon.exe
  • %APPDATA%\internetfiles213.tmp
  • %TEMP%\XdGVs.bat
  • %APPDATA%\Microsoft\#Services.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\driver\info\explorer.exe
  • %APPDATA%\winlogon.exe
  • %APPDATA%\Microsoft\#Services.exe
Deletes the following files:
  • %TEMP%\XdGVs.bat
Network activity:
Connects to:
  • 'sa####samvps.info':6667
UDP:
  • DNS ASK sa####samvps.info
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''