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Trojan.DownLoader25.16321

Added to the Dr.Web virus database: 2017-08-04

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Visual Network Procedure Logs IP User-mode' = 'C:\khvlqpdukzekq\wjzqeynqvsa.exe'
Creates the following services:
  • [<HKLM>\SYSTEM\ControlSet001\Services\Config Parental Block Authentication Office] 'ImagePath' = 'C:\khvlqpdukzekq\wjzqeynqvsa.exe'
  • [<HKLM>\SYSTEM\ControlSet001\Services\Config Parental Block Authentication Office] 'Start' = '00000002'
Malicious functions:
Executes the following:
  • 'C:\khvlqpdukzekq\nkaytlkkk.exe' "c:\khvlqpdukzekq\wjzqeynqvsa.exe"
  • 'C:\khvlqpdukzekq\wjzqeynqvsa.exe'
  • 'C:\khvlqpdukzekq\py2x3fjp02swmxi9hrf.exe'
Modifies file system:
Creates the following files:
  • C:\khvlqpdukzekq\wjzqeynqvsa.exe
  • C:\khvlqpdukzekq\nkaytlkkk.exe
  • C:\khvlqpdukzekq\blrrur
  • %WINDIR%\khvlqpdukzekq\ojfyylpxjuu
  • C:\khvlqpdukzekq\ojfyylpxjuu
  • C:\khvlqpdukzekq\py2x3fjp02swmxi9hrf.exe
Sets the 'hidden' attribute to the following files:
  • C:\khvlqpdukzekq\nkaytlkkk.exe
  • C:\khvlqpdukzekq\wjzqeynqvsa.exe
Deletes the following files:
  • C:\khvlqpdukzekq\py2x3fjp02swmxi9hrf.exe
  • %WINDIR%\khvlqpdukzekq\ojfyylpxjuu
Substitutes the following files:
  • %WINDIR%\khvlqpdukzekq\ojfyylpxjuu
Network activity:
Connects to:
  • 'be####eshore.net':80
  • 'ex####written.net':80
  • 'st####thfinger.net':80
  • 'ex###tshore.net':80
  • 'be####edollar.net':80
  • 'ex####realize.net':80
  • 'be####ewritten.net':80
  • 'ex####dollar.net':80
  • 'de####shoulder.net':80
  • 'pr####efinger.net':80
  • 'de###eabove.net':80
  • 'pr####eshoulder.net':80
  • 'st####thabove.net':80
  • 'st#####hshoulder.net':80
  • 'de####finger.net':80
  • 'st####thuntil.net':80
  • 'fo####nshore.net':80
  • 'su####written.net':80
  • 'ma####erealize.net':80
  • 'su###nshore.net':80
  • 'fo####ndollar.net':80
  • 'su####realize.net':80
  • 'fo####nwritten.net':80
  • 'su####dollar.net':80
  • 'ma####eshore.net':80
  • 'pe####written.net':80
  • 'be####erealize.net':80
  • 'pe###nshore.net':80
  • 'ma####edollar.net':80
  • 'pe####realize.net':80
  • 'ma####ewritten.net':80
  • 'pe####dollar.net':80
  • 'pr####eabove.net':80
  • 'do###rabove.net':80
  • 'pr###yabove.net':80
  • 'do###runtil.net':80
  • 'pr###yuntil.net':80
  • 'do####finger.net':80
  • 'pr####finger.net':80
  • 'do####shoulder.net':80
  • 'pr####shoulder.net':80
  • 'st###above.net':80
  • 'mi###above.net':80
  • 'st###until.net':80
  • 'mi###until.net':80
  • 'st###finger.net':80
  • 'mi###finger.net':80
  • 'st####houlder.net':80
  • 'mi####houlder.net':80
  • 'br####shoulder.net':80
  • 're####shoulder.net':80
  • 'br###nabove.net':80
  • 're###tabove.net':80
  • 'pr####euntil.net':80
  • 'de###euntil.net':80
  • 'br####finger.net':80
  • 're####finger.net':80
  • 'fe###wabove.net':80
  • 'do###eabove.net':80
  • 'fe###wuntil.net':80
  • 'do###euntil.net':80
  • 'br###nuntil.net':80
  • 're###tuntil.net':80
  • 'fe####shoulder.net':80
  • 'fe####finger.net':80
TCP:
HTTP GET requests:
  • http://be####eshore.net/index.php
  • http://ex####written.net/index.php
  • http://st####thfinger.net/index.php
  • http://ex###tshore.net/index.php
  • http://be####edollar.net/index.php
  • http://ex####realize.net/index.php
  • http://be####ewritten.net/index.php
  • http://ex####dollar.net/index.php
  • http://de####shoulder.net/index.php
  • http://pr####efinger.net/index.php
  • http://de###eabove.net/index.php
  • http://pr####eshoulder.net/index.php
  • http://st####thabove.net/index.php
  • http://st#####hshoulder.net/index.php
  • http://de####finger.net/index.php
  • http://st####thuntil.net/index.php
  • http://fo####nshore.net/index.php
  • http://su####written.net/index.php
  • http://ma####erealize.net/index.php
  • http://su###nshore.net/index.php
  • http://fo####ndollar.net/index.php
  • http://su####realize.net/index.php
  • http://fo####nwritten.net/index.php
  • http://su####dollar.net/index.php
  • http://ma####eshore.net/index.php
  • http://pe####written.net/index.php
  • http://be####erealize.net/index.php
  • http://pe###nshore.net/index.php
  • http://ma####edollar.net/index.php
  • http://pe####realize.net/index.php
  • http://ma####ewritten.net/index.php
  • http://pe####dollar.net/index.php
  • http://pr####eabove.net/index.php
  • http://do###rabove.net/index.php
  • http://pr###yabove.net/index.php
  • http://do###runtil.net/index.php
  • http://pr###yuntil.net/index.php
  • http://do####finger.net/index.php
  • http://pr####finger.net/index.php
  • http://do####shoulder.net/index.php
  • http://pr####shoulder.net/index.php
  • http://st###above.net/index.php
  • http://mi###above.net/index.php
  • http://st###until.net/index.php
  • http://mi###until.net/index.php
  • http://st###finger.net/index.php
  • http://mi###finger.net/index.php
  • http://st####houlder.net/index.php
  • http://mi####houlder.net/index.php
  • http://br####shoulder.net/index.php
  • http://re####shoulder.net/index.php
  • http://br###nabove.net/index.php
  • http://re###tabove.net/index.php
  • http://pr####euntil.net/index.php
  • http://de###euntil.net/index.php
  • http://br####finger.net/index.php
  • http://re####finger.net/index.php
  • http://fe###wabove.net/index.php
  • http://do###eabove.net/index.php
  • http://fe###wuntil.net/index.php
  • http://do###euntil.net/index.php
  • http://br###nuntil.net/index.php
  • http://re###tuntil.net/index.php
  • http://fe####shoulder.net/index.php
  • http://fe####finger.net/index.php
UDP:
  • DNS ASK be####eshore.net
  • DNS ASK ex####written.net
  • DNS ASK st####thfinger.net
  • DNS ASK ex###tshore.net
  • DNS ASK be####edollar.net
  • DNS ASK ex####realize.net
  • DNS ASK be####ewritten.net
  • DNS ASK ex####dollar.net
  • DNS ASK de####shoulder.net
  • DNS ASK pr####efinger.net
  • DNS ASK de###eabove.net
  • DNS ASK pr####eshoulder.net
  • DNS ASK st####thabove.net
  • DNS ASK st#####hshoulder.net
  • DNS ASK de####finger.net
  • DNS ASK st####thuntil.net
  • DNS ASK be####erealize.net
  • DNS ASK su####written.net
  • DNS ASK fo####nwritten.net
  • DNS ASK su###nshore.net
  • DNS ASK fo####nshore.net
  • DNS ASK su####realize.net
  • DNS ASK fo####nrealize.net
  • DNS ASK su####dollar.net
  • DNS ASK fo####ndollar.net
  • DNS ASK pe####written.net
  • DNS ASK ma####ewritten.net
  • DNS ASK pe###nshore.net
  • DNS ASK ma####eshore.net
  • DNS ASK pe####realize.net
  • DNS ASK ma####erealize.net
  • DNS ASK pe####dollar.net
  • DNS ASK ma####edollar.net
  • DNS ASK do###rabove.net
  • DNS ASK pr###yabove.net
  • DNS ASK do###runtil.net
  • DNS ASK pr###yuntil.net
  • DNS ASK do####finger.net
  • DNS ASK pr####finger.net
  • DNS ASK do####shoulder.net
  • DNS ASK pr####shoulder.net
  • DNS ASK st###above.net
  • DNS ASK mi###above.net
  • DNS ASK st###until.net
  • DNS ASK mi###until.net
  • DNS ASK st###finger.net
  • DNS ASK mi###finger.net
  • DNS ASK st####houlder.net
  • DNS ASK mi####houlder.net
  • DNS ASK fe###wuntil.net
  • DNS ASK re####shoulder.net
  • DNS ASK br####finger.net
  • DNS ASK re###tabove.net
  • DNS ASK br####shoulder.net
  • DNS ASK de###euntil.net
  • DNS ASK pr####eabove.net
  • DNS ASK re####finger.net
  • DNS ASK pr####euntil.net
  • DNS ASK do###eabove.net
  • DNS ASK fe####shoulder.net
  • DNS ASK do###euntil.net
  • DNS ASK fe###wabove.net
  • DNS ASK re###tuntil.net
  • DNS ASK br###nabove.net
  • DNS ASK fe####finger.net
  • DNS ASK br###nuntil.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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Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

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Download on App Store

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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