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Trojan.DownLoader23.5466

Added to the Dr.Web virus database: 2016-10-28

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Application WLAN Session Removal Bus Volume' = '<SYSTEM32>\nbxrbrz.exe'
Creates the following services:
  • [<HKLM>\SYSTEM\ControlSet001\Services\Debugger Files Cache Video Diagnostic] 'ImagePath' = '<SYSTEM32>\nbxrbrz.exe'
  • [<HKLM>\SYSTEM\ControlSet001\Services\Debugger Files Cache Video Diagnostic] 'Start' = '00000002'
Malicious functions:
To complicate detection of its presence in the operating system,
blocks the following features:
  • Windows Security Center
Executes the following:
  • '<SYSTEM32>\ismarfls.exe' "<SYSTEM32>\nbxrbrz.exe"
  • '%WINDIR%\Temp\vnegussv056uuxso.exe' -r 48697 tcp
  • '%TEMP%\vnegussl5bdw2xsojixcsr.exe'
  • '<SYSTEM32>\nbxrbrz.exe'
Modifies file system:
Creates the following files:
  • <SYSTEM32>\gyklkqauyrr\run
  • <SYSTEM32>\gyklkqauyrr\rng
  • %WINDIR%\Temp\vnegussv056uuxso.exe
  • <SYSTEM32>\gyklkqauyrr\cfg
  • %TEMP%\vnegussl5bdw2xsojixcsr.exe
  • <SYSTEM32>\gyklkqauyrr\tst
  • <SYSTEM32>\ismarfls.exe
  • <SYSTEM32>\nbxrbrz.exe
Sets the 'hidden' attribute to the following files:
  • <SYSTEM32>\ismarfls.exe
  • <SYSTEM32>\nbxrbrz.exe
Deletes the following files:
  • %WINDIR%\Temp\vnegussv056uuxso.exe
  • %TEMP%\vnegussl5bdw2xsojixcsr.exe
Network activity:
Connects to:
  • 'gr###enjoy.net':80
  • 'gr###world.net':80
  • 'gl###orse.ru':80
  • 'gr###enjoy.ru':80
  • 'eq####ctover.net':80
  • 'sp###enjoy.net':80
  • 'vi###enjoy.net':80
  • 'gr####ctover.net':80
  • 'gr###horse.net':80
  • 'ch###boris.ru':80
  • 'ko###rpig.xyz':80
  • 'lo####thepings.ru':80
  • 'po###lols.ru':80
  • 'la###aha.xyz':80
  • 'bi###rfans.top':80
  • 'ru##nds.top':80
  • 'po###alal.site':80
  • 'ri###nafap.site':80
TCP:
HTTP GET requests:
  • http://gr###enjoy.net/index.php
  • http://gr###world.net/index.php
  • http://gl###orse.ru/index.php
  • http://gr###enjoy.ru/index.php
  • http://eq####ctover.net/index.php
  • http://sp###enjoy.net/index.php
  • http://vi###enjoy.net/index.php
  • http://gr####ctover.net/index.php
  • http://gr###horse.net/index.php
  • http://ch###boris.ru/index.php
  • http://ko###rpig.xyz/index.php
  • http://lo####thepings.ru/index.php
  • http://po###lols.ru/index.php
  • http://la###aha.xyz/index.php
  • http://bi###rfans.top/index.php
  • http://ru##nds.top/index.php
  • http://po###alal.site/index.php
  • http://ri###nafap.site/index.php
UDP:
  • DNS ASK wi###irst.net
  • DNS ASK jo###irst.net
  • DNS ASK jo###uess.net
  • DNS ASK jo###uess.ru
  • DNS ASK wi###ill.net
  • DNS ASK wi###tood.ru
  • DNS ASK jo###tood.net
  • DNS ASK jo###ill.net
  • DNS ASK wi###tood.net
  • DNS ASK wi###uess.net
  • DNS ASK ro###irst.net
  • DNS ASK de###irst.net
  • DNS ASK ro###uess.net
  • DNS ASK de###uess.net
  • DNS ASK ro###ill.net
  • DNS ASK ro###tood.net
  • DNS ASK de###tood.net
  • DNS ASK ro##kill.ru
  • DNS ASK de###ill.net
  • DNS ASK se####berguess.net
  • DNS ASK of###stood.net
  • DNS ASK fr###stood.net
  • DNS ASK fr###kill.net
  • DNS ASK fr###kill.ru
  • DNS ASK sp###guess.net
  • DNS ASK sp###first.ru
  • DNS ASK we###irst.net
  • DNS ASK we###uess.net
  • DNS ASK sp###first.net
  • DNS ASK of###kill.net
  • DNS ASK se####berkill.net
  • DNS ASK se####berstood.net
  • DNS ASK se####berfirst.net
  • DNS ASK ha###irst.ru
  • DNS ASK of###guess.net
  • DNS ASK of###first.net
  • DNS ASK fr###first.net
  • DNS ASK of###guess.ru
  • DNS ASK fr###guess.net
  • DNS ASK mu###allow.net
  • DNS ASK ya###llow.net
  • DNS ASK mu###gives.net
  • DNS ASK ya###ives.net
  • DNS ASK ya###llow.ru
  • DNS ASK mu###taste.net
  • DNS ASK ya###aste.net
  • DNS ASK mu###earth.net
  • DNS ASK ya###arth.net
  • DNS ASK we###aste.net
  • DNS ASK we###ives.ru
  • DNS ASK sp###allow.net
  • DNS ASK sp###gives.net
  • DNS ASK we###ives.net
  • DNS ASK we###llow.net
  • DNS ASK sp###taste.net
  • DNS ASK sp###taste.ru
  • DNS ASK we###arth.net
  • DNS ASK sp###earth.net
  • DNS ASK ha###ives.net
  • DNS ASK ma###irst.ru
  • DNS ASK wr###first.net
  • DNS ASK wr###guess.net
  • DNS ASK ma###irst.net
  • DNS ASK ma###ill.net
  • DNS ASK wr###stood.net
  • DNS ASK wr###stood.ru
  • DNS ASK wr###kill.net
  • DNS ASK ma###tood.net
  • DNS ASK ma###uess.net
  • DNS ASK ha###llow.net
  • DNS ASK hu###allow.net
  • DNS ASK ha###ives.ru
  • DNS ASK hu###gives.net
  • DNS ASK ha###arth.net
  • DNS ASK ha###aste.net
  • DNS ASK hu###taste.net
  • DNS ASK hu###earth.net
  • DNS ASK hu###earth.ru
  • DNS ASK th###orld.net
  • DNS ASK ta###horse.net
  • DNS ASK wa###enjoy.net
  • DNS ASK vi####ctover.net
  • DNS ASK wa###world.net
  • DNS ASK wa###enjoy.ru
  • DNS ASK sp####ctover.net
  • DNS ASK vi###horse.net
  • DNS ASK ta####ctover.net
  • DNS ASK gl###ctover.net
  • DNS ASK dr###octover.ru
  • DNS ASK eq###horse.net
  • DNS ASK sp###world.ru
  • DNS ASK wa###horse.net
  • DNS ASK fa###orld.net
  • DNS ASK vi###octover.ru
  • DNS ASK fa###njoy.net
  • DNS ASK eq###enjoy.net
  • DNS ASK sp###horse.net
  • DNS ASK ri###nafap.site
  • DNS ASK po###alal.site
  • DNS ASK ru##nds.top
  • DNS ASK bi###rfans.top
  • DNS ASK la###aha.xyz
  • DNS ASK po###lols.ru
  • DNS ASK lo####thepings.ru
  • DNS ASK ko###rpig.xyz
  • DNS ASK ch###boris.ru
  • DNS ASK gl###orse.ru
  • DNS ASK sp###enjoy.net
  • DNS ASK gr###horse.net
  • DNS ASK vi###world.net
  • DNS ASK vi###enjoy.net
  • DNS ASK gr####ctover.net
  • DNS ASK gr###enjoy.net
  • DNS ASK gr###enjoy.ru
  • DNS ASK eq####ctover.net
  • DNS ASK gr###world.net
  • DNS ASK ta###enjoy.net
  • DNS ASK ya###ill.net
  • DNS ASK ya###tood.net
  • DNS ASK mu###kill.ru
  • DNS ASK mu###stood.net
  • DNS ASK ha###uess.net
  • DNS ASK ha###irst.net
  • DNS ASK hu###first.net
  • DNS ASK hu###guess.net
  • DNS ASK hu###guess.ru
  • DNS ASK mu###kill.net
  • DNS ASK we###ill.net
  • DNS ASK we###tood.net
  • DNS ASK sp###kill.net
  • DNS ASK sp###stood.net
  • DNS ASK we###tood.ru
  • DNS ASK mu###first.net
  • DNS ASK ya###irst.net
  • DNS ASK mu###guess.net
  • DNS ASK ya###uess.net
  • DNS ASK wa####ctover.net
  • DNS ASK fa###orse.net
  • DNS ASK dr###enjoy.net
  • DNS ASK gl###orse.net
  • DNS ASK sp###world.net
  • DNS ASK dr###world.net
  • DNS ASK fa###ctover.net
  • DNS ASK eq###world.net
  • DNS ASK fa###orse.ru
  • DNS ASK th###njoy.net
  • DNS ASK ha###tood.net
  • DNS ASK ha###tood.ru
  • DNS ASK ha###ill.net
  • DNS ASK hu###kill.net
  • DNS ASK hu###stood.net
  • DNS ASK th###ctover.net
  • DNS ASK dr####ctover.net
  • DNS ASK th###orse.net
  • DNS ASK dr###horse.net
  • '23#.#55.255.250':1900

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.
Download Dr.Web

Download by serial number

Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

Download Dr.Web

Download by serial number

  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.

Find out more about Dr.Web for Android