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Win32.HLLW.Autoruner1.46482

Added to the Dr.Web virus database: 2013-07-16

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Card Background Remote Tracking Source' = '<SYSTEM32>\clysftn.exe'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\clysftn.exe
Creates the following services:
  • [<HKLM>\SYSTEM\ControlSet001\Services\Wired DLL Firewall Drive Server] 'Start' = '00000002'
Malicious functions:
To complicate detection of its presence in the operating system,
blocks the following features:
  • Windows Security Center
Creates and executes the following:
  • '%WINDIR%\Temp\epioywc6nwpfwk.exe' -r 33265 tcp
  • '%WINDIR%\Temp\epioywc7cwwfwk.exe' -r 42169 tcp
  • '<SYSTEM32>\lqpjkngywn.exe' "<SYSTEM32>\clysftn.exe"
  • '%TEMP%\epioywc6032fwyttklnbz.exe'
  • '<SYSTEM32>\clysftn.exe'
Modifies file system :
Creates the following files:
  • <SYSTEM32>\lrylrktkgqs\run
  • <SYSTEM32>\lrylrktkgqs\rng
  • <SYSTEM32>\lrylrktkgqs\cfg
  • %WINDIR%\Temp\epioywc7cwwfwk.exe
  • %WINDIR%\Temp\epioywc6nwpfwk.exe
  • %TEMP%\epioywc6032fwyttklnbz.exe
  • <SYSTEM32>\lrylrktkgqs\tst
  • <SYSTEM32>\lrylrktkgqs\etc
  • <SYSTEM32>\lqpjkngywn.exe
  • <SYSTEM32>\clysftn.exe
Sets the 'hidden' attribute to the following files:
  • <SYSTEM32>\lqpjkngywn.exe
  • <SYSTEM32>\clysftn.exe
Deletes the following files:
  • %WINDIR%\Temp\epioywc6nwpfwk.exe
  • %WINDIR%\Temp\epioywc7cwwfwk.exe
  • %TEMP%\epioywc6032fwyttklnbz.exe
  • <DRIVERS>\etc\hosts
Substitutes the HOSTS file.
Network activity:
Connects to:
  • 'sp###aguga.com':80
  • 'oi###agyta.com':80
TCP:
HTTP GET requests:
  • sp###aguga.com/forum/search.php?me#######################################
  • oi###agyta.com/forum/search.php?me#######################################
UDP:
  • DNS ASK ja###uter.com
  • DNS ASK go#####everytime.com
  • DNS ASK oi###agyta.net
  • DNS ASK el#####arimagine.com
  • DNS ASK ma######elemelefresh.com
  • DNS ASK oi###agyta.com
  • DNS ASK sp###aguga.com
  • DNS ASK pu#####vibrations.com
  • '23#.#55.255.250':1900