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Trojan.DownLoader13.10221

Added to the Dr.Web virus database: 2015-05-05

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Portable Virtual Machine Spooler' = 'C:\klvilibev\mxiyzldavuj.exe'
Creates the following services:
  • [<HKLM>\SYSTEM\ControlSet001\Services\Internet Thread Modules Session Windows DHCP SNMP] 'Start' = '00000002'
Malicious functions:
Creates and executes the following:
  • 'C:\klvilibev\xqklvdltye.exe' "c:\klvilibev\mxiyzldavuj.exe"
  • 'C:\klvilibev\mxiyzldavuj.exe'
  • 'C:\klvilibev\jka2ppdh6fygij7.exe'
Modifies file system :
Creates the following files:
  • C:\klvilibev\mxiyzldavuj.exe
  • C:\klvilibev\xqklvdltye.exe
  • C:\klvilibev\kzihob
  • %WINDIR%\klvilibev\cgtswjv6hug
  • C:\klvilibev\cgtswjv6hug
  • C:\klvilibev\jka2ppdh6fygij7.exe
Sets the 'hidden' attribute to the following files:
  • C:\klvilibev\xqklvdltye.exe
  • C:\klvilibev\mxiyzldavuj.exe
Deletes the following files:
  • C:\klvilibev\jka2ppdh6fygij7.exe
  • %WINDIR%\klvilibev\cgtswjv6hug
Network activity:
Connects to:
  • 'de####yafraid.net':80
  • 'li####dinner.net':80
  • 'de####ycircle.net':80
  • 'li####afraid.net':80
  • 'de####ymeasure.net':80
  • 'hu####dcircle.net':80
  • 'de####ydinner.net':80
  • 'li####measure.net':80
  • 'ri####afraid.net':80
  • 'be####dinner.net':80
  • 'ri####circle.net':80
  • 'be####afraid.net':80
  • 'ri####measure.net':80
  • 'li####circle.net':80
  • 'ri####dinner.net':80
  • 'be####measure.net':80
  • 'jo####ycircle.net':80
  • 're####erapple.net':80
  • 'wo###apple.net':80
  • 're####erbuilt.net':80
  • 'wo###built.net':80
  • 'in####secarry.net':80
  • 'fo###tcarry.net':80
  • 're####erfather.net':80
  • 'wo###father.net':80
  • 'hu####ddinner.net':80
  • 'jo####ydinner.net':80
  • 'hu####dafraid.net':80
  • 'jo####yafraid.net':80
  • 're####ercarry.net':80
  • 'wo###carry.net':80
  • 'hu####dmeasure.net':80
  • 'jo####ymeasure.net':80
TCP:
HTTP GET requests:
  • http://de####yafraid.net/index.php?me########
  • http://li####dinner.net/index.php?me########
  • http://de####ycircle.net/index.php?me########
  • http://li####afraid.net/index.php?me########
  • http://de####ymeasure.net/index.php?me########
  • http://hu####dcircle.net/index.php?me########
  • http://de####ydinner.net/index.php?me########
  • http://li####measure.net/index.php?me########
  • http://ri####afraid.net/index.php?me########
  • http://be####dinner.net/index.php?me########
  • http://ri####circle.net/index.php?me########
  • http://be####afraid.net/index.php?me########
  • http://ri####measure.net/index.php?me########
  • http://li####circle.net/index.php?me########
  • http://ri####dinner.net/index.php?me########
  • http://be####measure.net/index.php?me########
  • http://jo####ycircle.net/index.php?me########
  • http://re####erapple.net/index.php?me########
  • http://wo###apple.net/index.php?me########
  • http://re####erbuilt.net/index.php?me########
  • http://wo###built.net/index.php?me########
  • http://in####secarry.net/index.php?me########
  • http://fo###tcarry.net/index.php?me########
  • http://re####erfather.net/index.php?me########
  • http://wo###father.net/index.php?me########
  • http://hu####ddinner.net/index.php?me########
  • http://jo####ydinner.net/index.php?me########
  • http://hu####dafraid.net/index.php?me########
  • http://jo####yafraid.net/index.php?me########
  • http://re####ercarry.net/index.php?me########
  • http://wo###carry.net/index.php?me########
  • http://hu####dmeasure.net/index.php?me########
  • http://jo####ymeasure.net/index.php?me########
UDP:
  • DNS ASK de####yafraid.net
  • DNS ASK li####dinner.net
  • DNS ASK de####ycircle.net
  • DNS ASK li####afraid.net
  • DNS ASK de####ymeasure.net
  • DNS ASK hu####dcircle.net
  • DNS ASK de####ydinner.net
  • DNS ASK li####measure.net
  • DNS ASK li####circle.net
  • DNS ASK be####afraid.net
  • DNS ASK ri####afraid.net
  • DNS ASK be####circle.net
  • DNS ASK ri####circle.net
  • DNS ASK be####measure.net
  • DNS ASK ri####measure.net
  • DNS ASK be####dinner.net
  • DNS ASK ri####dinner.net
  • DNS ASK re####erapple.net
  • DNS ASK wo###apple.net
  • DNS ASK re####erbuilt.net
  • DNS ASK wo###built.net
  • DNS ASK in####secarry.net
  • DNS ASK fo###tcarry.net
  • DNS ASK re####erfather.net
  • DNS ASK wo###father.net
  • DNS ASK wo###carry.net
  • DNS ASK jo####yafraid.net
  • DNS ASK hu####ddinner.net
  • DNS ASK jo####ycircle.net
  • DNS ASK hu####dafraid.net
  • DNS ASK jo####ymeasure.net
  • DNS ASK re####ercarry.net
  • DNS ASK jo####ydinner.net
  • DNS ASK hu####dmeasure.net
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''

Curing recommendations

  1. If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
  2. If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
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After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

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  1. If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
  2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
    • Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
    • Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
    • Switch off your device and turn it on as normal.

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