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Win32.HLLW.Autoruner.53759

Aggiunto al database dei virus Dr.Web: 2011-07-09

La descrizione è stata aggiunta:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoadua' = '%HOMEPATH%\yoadua.exe /L'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoadua' = '%HOMEPATH%\yoadua.exe /r'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoadua' = '%HOMEPATH%\yoadua.exe /S'
  • [<HKLM>\SYSTEM\ControlSet001\Control\Print\Providers\2141173056] 'Name' = '"%TEMP%\3.tmp"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoadua' = '%HOMEPATH%\yoadua.exe /q'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoadua' = '%HOMEPATH%\yoadua.exe /p'
Creates the following files on removable media:
  • <Drive name for removable media>:\Documents.lnk
  • <Drive name for removable media>:\Passwords.lnk
  • <Drive name for removable media>:\Pictures.lnk
  • <Drive name for removable media>:\Video.lnk
  • <Drive name for removable media>:\Music.lnk
  • <Drive name for removable media>:\SvM.ico
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\yoadua.exe
  • <Drive name for removable media>:\New Folder.lnk
  • <Drive name for removable media>:\yoaduax.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
Creates and executes the following:
  • %HOMEPATH%\vob32.exe 
  • %HOMEPATH%\yoadua.exe 
  • %HOMEPATH%\jestle.exe 
  • %HOMEPATH%\h564XWZdO8.exe 
  • %HOMEPATH%\iestle.exe 
Executes the following:
  • <SYSTEM32>\tasklist.exe
Injects code into
the following system processes:
  • <SYSTEM32>\spoolsv.exe
Modifies settings of Windows Internet Explorer:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1A10' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '{AEBA21FA-782A-4A90-978D-B72164C80120}' = ''
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '{A8A88C49-5EB2-4990-A1A2-0876022C854F}' = ''
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'currentlevel' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1601' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1400' = '00000000'
Hides the following processes:
  • <SYSTEM32>\cmd.exe
Modifies file system :
Creates the following files:
  • %HOMEPATH%\yoadua.exe
  • %TEMP%\2.tmp
  • %TEMP%\Rlb..bat
  • %WINDIR%\Temp\4.tmp
  • %HOMEPATH%\vob32.dll
  • %HOMEPATH%\iestle.exe
  • %HOMEPATH%\h564XWZdO8.exe
  • %HOMEPATH%\vob32.exe
  • %HOMEPATH%\jestle.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\yoadua.exe
  • <Drive name for removable media>:\yoaduax.exe
  • <Drive name for removable media>:\SvM.ico
  • %HOMEPATH%\yoadua.exe
  • <Drive name for removable media>:\autorun.inf
Deletes the following files:
  • %WINDIR%\Temp\4.tmp
  • %HOMEPATH%\h564XWZdO8.exe
  • %TEMP%\3.tmp
  • <DRIVERS>\etc\hosts
Network activity:
Connects to:
  • 'bu###ogin.net':80
TCP:
HTTP POST requests:
  • bu###ogin.net/?in##############################################################################################################
UDP:
  • DNS ASK go##le.ae
  • DNS ASK bu###ogin.net
  • DNS ASK ik##.com
  • DNS ASK si###ell.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''
  • ClassName: 'Shell_TrayWnd' WindowName: ''