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Win32.HLLW.Autoruner1.4588

Added to the Dr.Web virus database: 2011-11-27

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Windows Network Protocal' = '<SYSTEM32>\wmphk32.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\at48.lnk
  • <Drive name for removable media>:\at47.lnk
  • <Drive name for removable media>:\Autorun.inf
  • <Drive name for removable media>:\SysConf.{645FF040-5081-101B-9F08-00AA002F954E}\sysdrv-4369703.dat
  • <Drive name for removable media>:\h.cpl
  • <Drive name for removable media>:\vservmgr.exe
  • <Drive name for removable media>:\at46.lnk
  • <Drive name for removable media>:\at45.lnk
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List] '<SYSTEM32>\wmphk32.exe' = '<SYSTEM32>\wmphk32.exe:*:Enabled:Windows Network Protocal'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<SYSTEM32>\wmphk32.exe' = '<SYSTEM32>\wmphk32.exe:*:Enabled:Windows Network Protocal'
Creates and executes the following:
  • <SYSTEM32>\wmphk32.exe <Full path to virus>
Injects code into
the following system processes:
  • %WINDIR%\Explorer.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'
Hides the following processes:
  • <Full path to virus>
  • <SYSTEM32>\wmphk32.exe
Modifies file system :
Creates the following files:
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\5x2[1].zip
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\rdat02[1].txt
  • <SYSTEM32>\wmphk32.exe
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\5x2[1].zip
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\h.cpl
  • <SYSTEM32>\wmphk32.exe
Deletes the following files:
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\5x2[1].zip
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\5x2[1].zip
Deletes itself.
Network activity:
Connects to:
  • 's3#.##telcore.su':3654
  • 's8#.##telprog.su':3654
  • '14#.#48.35.28':80
  • 's7#.##telprog.su':4502
  • 'vp####.#ntelbackupsrv.su':80
  • 's5#.##telprog.su':6303
  • 's6#.##telprog.su':5781
  • 's4#.##telcore.su':6303
TCP:
HTTP GET requests:
  • 14#.#48.35.28/awstats/rdat02.txt
  • vp####.#ntelbackupsrv.su/net/5x2.zip
UDP:
  • DNS ASK s8#.##telprog.su
  • DNS ASK s6#.##telprog.su
  • DNS ASK s7#.##telprog.su
  • DNS ASK s3#.##telcore.su
  • DNS ASK s4#.##telcore.su
  • DNS ASK vp####.#ntelbackupsrv.su
  • DNS ASK s5#.##telprog.su
  • '<Private IP address>':1039
  • '<Private IP address>':1038
Miscellaneous:
Searches for the following windows:
  • ClassName: 'TCPViewClass' WindowName: ''
  • ClassName: '#32770' WindowName: 'Regshot 1.8.2'
  • ClassName: 'PROCEXPL' WindowName: ''
  • ClassName: 'CNetmonMainFrame' WindowName: 'Microsoft Network Monitor 3.3'
  • ClassName: 'SmartSniff' WindowName: 'SmartSniff'
  • ClassName: 'CurrPorts' WindowName: 'CurrPorts'