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Win32.HLLW.Autoruner1.17690

Added to the Dr.Web virus database: 2012-06-22

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{XUK35O80-ILJY-726Y-5G66-JN056V0NRJAX}] 'StubPath' = 'c:\dir\install\system32\microsoft.exe Restart'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'HKCU' = ''
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'HKLM' = ''
Creates the following files on removable media:
  • <Drive name for removable media>:\pxol.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] 'DisableNotifications' = '00000001'
  • <Auxiliary element>
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
  • [<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'
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:
  • C:\dir\install\system32\microsoft.exe
Injects code into
the following system processes:
  • <SYSTEM32>\svchost.exe
  • <SYSTEM32>\spoolsv.exe
  • <SYSTEM32>\alg.exe
  • <SYSTEM32>\lsass.exe
  • <SYSTEM32>\cscript.exe
  • <SYSTEM32>\winlogon.exe
  • <SYSTEM32>\services.exe
a large number of user processes.
Modifies file system :
Creates the following files:
  • %TEMP%\winqnyxmb.exe
  • %TEMP%\tejno.exe
  • <DRIVERS>\fppim.sys
  • %TEMP%\winkyty.exe
  • C:\vlhjjl.exe
  • C:\autorun.inf
  • %APPDATA%\SQLite3.dll
  • %APPDATA%\logs.dat
  • %TEMP%\XX--XX--XX.txt
  • C:\dir\install\system32\microsoft.exe
  • %TEMP%\XxX.xXx
  • %TEMP%\127000.tmp
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\sqlite3[1].dll
  • %TEMP%\UuU.uUu
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\pxol.exe
  • C:\vlhjjl.exe
  • %APPDATA%\logs.dat
  • C:\autorun.inf
Deletes the following files:
  • %TEMP%\XxX.xXx
  • %TEMP%\winqnyxmb.exe
  • %TEMP%\winkyty.exe
  • %TEMP%\tejno.exe
  • %TEMP%\XX--XX--XX.txt
  • %TEMP%\UuU.uUu
  • <DRIVERS>\fppim.sys
Network activity:
Connects to:
  • 'ah####.no-ip.biz':85
  • 'www.se##er.com':80
  • 'localhost':1038
TCP:
HTTP GET requests:
  • www.se##er.com/sqlite3.dll
UDP:
  • DNS ASK ah####.no-ip.biz
  • DNS ASK www.se##er.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'Indicator' WindowName: ''