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Win32.HLLW.Autoruner1.14064

Added to the Dr.Web virus database: 2012-04-01

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\conime.exe] 'Debugger' = 'MsSyClient.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'conime.exe' = 'conime.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\Autorun.inf
  • <Drive name for removable media>:\~temp\14356.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List] '<SYSTEM32>\MsSyClient.exe' = '<SYSTEM32>\MsSyClient.exe:*:Enabled:LAN Router'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<SYSTEM32>\MsSyClient.exe' = '<SYSTEM32>\MsSyClient.exe:*:Enabled:LAN Router'
Creates and executes the following:
  • <SYSTEM32>\MsSyClient.exe <Full path to virus>
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
Terminates or attempts to terminate
the following user processes:
  • zlclient.exe
  • GUARD.EXE
Searches for windows to
detect analytical utilities:
  • ClassName: 'PROCMON_WINDOW_CLASS' WindowName: 'Process Monitor - Sysinternals: www.sysinternals.com'
detect programs and games:
  • ClassName: 'gdkWindowToplevel' WindowName: 'The Wireshark Network Analyzer'
Modifies file system :
Creates the following files:
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\debug2[1].zip
  • <SYSTEM32>\MsSyClient.exe
Sets the 'hidden' attribute to the following files:
  • <SYSTEM32>\MsSyClient.exe
Deletes itself.
Network activity:
Connects to:
  • 'ro##.##xme1fucan.com':80
TCP:
HTTP GET requests:
  • ro##.##xme1fucan.com/net/debug2.zip
UDP:
  • DNS ASK ns##.##ezombieblog.net
  • DNS ASK ns##.##ezombieworld.com
  • DNS ASK ns##.##toresalerep.net
  • DNS ASK ns##.###biemaniacbiz.com
  • DNS ASK ns#.###lzombieguide.com
  • DNS ASK ro##.##xme1fucan.com
  • '<Private IP address>':1038
  • '<Private IP address>':1035
Miscellaneous:
Searches for the following windows:
  • ClassName: 'PROCEXPL' WindowName: ''
  • ClassName: '#32770' WindowName: 'Regshot 1.8.2'
  • ClassName: 'TCPViewClass' WindowName: ''
  • ClassName: 'CNetmonMainFrame' WindowName: 'Microsoft Network Monitor 3.3'
  • ClassName: 'SmartSniff' WindowName: 'SmartSniff'