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Win32.HLLW.Autoruner.63836

Added to the Dr.Web virus database: 2011-10-15

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'ntlsapi' = '%APPDATA%\Microsoft\ntlsapi32.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'ntlsapi' = '%APPDATA%\Microsoft\ntlsapi32.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{2C7339OW-2J09-4501-B2F3-C3508F2941KL}] 'StubPath' = '%APPDATA%\Microsoft\ntlsapi32.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.bat
  • <Drive name for removable media>:\autorun.vbs
  • <Drive name for removable media>:\USBinit32.exe
  • <Drive name for removable media>:\autorun.inf
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%PROGRAM_FILES%\internet explorer\iexplore.exe' = '%PROGRAM_FILES%\internet explorer\iexplore.exe:*:Enabled:Internet Explorer'
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
Executes the following:
  • <SYSTEM32>\attrib.exe -r -s -h "<Full path to virus>"
  • <SYSTEM32>\cmd.exe /c ""%TEMP%\tmp.bat" "
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
Modifies file system :
Creates the following files:
  • %APPDATA%\Microsoft\init.txt
  • %TEMP%\tmp.bat
  • %APPDATA%\Microsoft\ntlsapi32.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\autorun.bat
  • <Drive name for removable media>:\autorun.vbs
  • <Drive name for removable media>:\USBinit32.exe
  • <Drive name for removable media>:\autorun.inf
Deletes the following files:
  • %APPDATA%\Microsoft\ntlsapi32.exe
Deletes itself.
Network activity:
Connects to:
  • 'go#####.ivedottedya.com':80
  • 'yu###.#vepointedya.com':80
  • 'cd##.##edottedya.com':80
  • '64.##.149.254':80
  • '74.##5.232.51':80
TCP:
HTTP GET requests:
  • go#####.ivedottedya.com/webyx/settings.cfg?bu#############
  • yu###.#vepointedya.com/webyx/remote.php?os#####################################################################################################################
  • 64.##.149.254/webyx/?_i########
  • cd##.##edottedya.com/webyx/remote.php?os#####################################################################################################################
UDP:
  • DNS ASK go#####.ivedottedya.com
  • DNS ASK yu###.#vepointedya.com
  • DNS ASK sy####.ivepointedya.com
  • DNS ASK cd##.##edottedya.com
  • DNS ASK www.google.com
  • '<Private IP address>':1038
  • '<Private IP address>':1037
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''