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Win32.HLLW.Autoruner1.52758

Added to the Dr.Web virus database: 2013-08-03

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'ddb2c33a89bbcbe44079cba1a1b6709b' = '"%TEMP%\trojanl.exe" ..'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'ddb2c33a89bbcbe44079cba1a1b6709b' = '"%TEMP%\trojanl.exe" ..'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\ddb2c33a89bbcbe44079cba1a1b6709b.exe
Creates the following files on removable media:
  • <Drive name for removable media>:\roli.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'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\trojanl.exe' = '%TEMP%\trojanl.exe:*:Enabled:trojanl.exe'
  • [<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] '%TEMP%\DriverPackSolution.exe' = '%TEMP%\DriverPackSolution.exe:*: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:
  • '%TEMP%\Server.exe'
  • '%TEMP%\trojanl.exe'
  • '%TEMP%\110.exe'
  • '%TEMP%\DriverPackSolution.exe'
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\trojanl.exe" "trojanl.exe" ENABLE
Injects code into
the following system processes:
  • <SYSTEM32>\cscript.exe
a large number of user processes.
Modifies file system :
Creates the following files:
  • C:\autorun.inf
  • C:\uxsqhn.exe
  • %TEMP%\wingcdfi.exe
  • %TEMP%\ykkln.exe
  • %TEMP%\ykiqfy.exe
  • %TEMP%\yier.exe
  • %TEMP%\winbfvt.exe
  • %TEMP%\Server.exe
  • %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new
  • %TEMP%\110.exe
  • %TEMP%\DriverPackSolution.exe
  • <DRIVERS>\lopfn.sys
  • %TEMP%\winkrsfq.exe
  • %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new
  • %TEMP%\trojanl.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\roli.exe
  • C:\autorun.inf
  • C:\uxsqhn.exe
Deletes the following files:
  • %TEMP%\yier.exe
  • %TEMP%\wingcdfi.exe
  • %TEMP%\winbfvt.exe
  • %TEMP%\ykiqfy.exe
  • %TEMP%\ykkln.exe
  • %TEMP%\winkrsfq.exe
  • %TEMP%\DriverPackSolution.exe
  • %TEMP%\110.exe
  • %TEMP%\Server.exe
  • <DRIVERS>\lopfn.sys
  • %TEMP%\trojanl.exe
Moves the following files:
  • from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch
  • from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch
Network activity:
Connects to:
  • 'ta#####bookcentre.com':80
  • 'gu###gul.com':80
  • 'www.sk######.#andomierz.opoka.org.pl':80
  • 'de#####ngell.no-ip.biz':1177
  • 'www.pr#####osyancy.com.mx':80
TCP:
HTTP GET requests:
  • ta#####bookcentre.com/button.gif?5b###########
  • gu###gul.com/logo.gif?5e###########
  • www.pr#####osyancy.com.mx/logo.gif?59###########
  • www.sk######.#andomierz.opoka.org.pl/images/logo.gif?5a###########
UDP:
  • DNS ASK ta#####bookcentre.com
  • DNS ASK gu###gul.com
  • DNS ASK mo####ceptro.com
  • DNS ASK de#####ngell.no-ip.biz
  • DNS ASK www.pr#####osyancy.com.mx
  • DNS ASK www.sk######.#andomierz.opoka.org.pl
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'