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Win32.HLLW.Autoruner1.26861

Added to the Dr.Web virus database: 2012-09-29

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{GF4X7745-WQW6-GR05-83C3-J2A4J26U82BY}] 'StubPath' = '<SYSTEM32>\microsoft\windows.exe Restart'
  • [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{GF4X7745-WQW6-GR05-83C3-J2A4J26U82BY}] 'StubPath' = ''
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run] 'Policies' = ''
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'Policies' = ''
Creates the following files on removable media:
  • <Drive name for removable media>:\ikew.pif
  • <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] '%WINDIR%\Explorer.EXE' = '%WINDIR%\Explorer.EXE:*:Enabled:ipsec'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<SYSTEM32>\ctfmon.exe' = '<SYSTEM32>\ctfmon.exe:*:Enabled:ipsec'
  • <Auxiliary element>
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '<Full path to virus>:*:Enabled:ipsec'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
blocks the following features:
  • User Account Control (UAC)
  • Windows Security Center
Creates and executes the following:
  • <SYSTEM32>\Microsoft\windows.exe
Executes the following:
  • %WINDIR%\explorer.exe
Injects code into
the following system processes:
  • %WINDIR%\explorer.exe
a large number of user processes.
Modifies file system :
Creates the following files:
  • %TEMP%\uxdt.exe
  • %TEMP%\janfo.exe
  • C:\autorun.inf
  • %TEMP%\winrlyr.exe
  • %TEMP%\yyon.exe
  • C:\lhql.exe
  • %APPDATA%\logs.dat
  • %TEMP%\XX--XX--XX.txt
  • <SYSTEM32>\Microsoft\windows.exe
  • %TEMP%\XxX.xXx
  • %TEMP%\waodq.exe
  • <DRIVERS>\indln.sys
  • %TEMP%\UuU.uUu
Sets the 'hidden' attribute to the following files:
  • C:\lhql.exe
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\ikew.pif
  • <SYSTEM32>\Microsoft\windows.exe
  • %APPDATA%\logs.dat
  • C:\autorun.inf
Deletes the following files:
  • %TEMP%\uxdt.exe
  • %TEMP%\janfo.exe
  • %TEMP%\winrlyr.exe
  • %TEMP%\yyon.exe
  • %TEMP%\waodq.exe
  • %TEMP%\UuU.uUu
  • %TEMP%\XX--XX--XX.txt
  • %TEMP%\XxX.xXx
  • <DRIVERS>\indln.sys
Network activity:
Connects to:
  • 'localhost':288
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Proxy Desktop' WindowName: ''
  • ClassName: 'Shell_TrayWnd' WindowName: ''