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Trojan.DownLoader18.7641

Added to the Dr.Web virus database: 2015-12-11

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Assistant Block Color Security Isolation Human' = '<SYSTEM32>\nsbygja.exe'
Creates the following services:
  • [<HKLM>\SYSTEM\ControlSet001\Services\Trap COM Extensible Locator Device Background] '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:
  • '<SYSTEM32>\pnhbnqpy.exe' "<SYSTEM32>\nsbygja.exe"
  • '%WINDIR%\Temp\msuy7b2mm9cow.exe' -r 48232 tcp
  • '%TEMP%\msuy7b2hl9cowmbk40dq1.exe'
  • '<SYSTEM32>\nsbygja.exe'
Modifies file system :
Creates the following files:
  • <SYSTEM32>\jauwhtssj\run
  • <SYSTEM32>\jauwhtssj\rng
  • %WINDIR%\Temp\msuy7b2mm9cow.exe
  • <SYSTEM32>\jauwhtssj\cfg
  • <SYSTEM32>\pnhbnqpy.exe
  • %TEMP%\msuy7b2hl9cowmbk40dq1.exe
  • <SYSTEM32>\jauwhtssj\tst
  • <SYSTEM32>\nsbygja.exe
  • <SYSTEM32>\jauwhtssj\etc
Sets the 'hidden' attribute to the following files:
  • <SYSTEM32>\pnhbnqpy.exe
  • <SYSTEM32>\nsbygja.exe
Deletes the following files:
  • %WINDIR%\Temp\msuy7b2mm9cow.exe
  • <DRIVERS>\etc\hosts
  • %TEMP%\msuy7b2hl9cowmbk40dq1.exe
Substitutes the HOSTS file.
Network activity:
Connects to:
  • 'mo###tudy.net':80
  • 'su###yloss.net':80
  • 'su###ystudy.net':80
  • 'su###yuncle.net':80
  • 'mo###ncle.net':80
  • 'mo###oss.net':80
  • 'si###ncle.net':80
  • 'me###tudy.net':80
  • 'me###ncle.net':80
  • 'su###yonce.net':80
  • 'mo###nce.net':80
  • 'qu###uncle.net':80
  • 'th###ncle.net':80
  • 'he###nce.net':80
  • 'he###oss.net':80
  • 'ca###nce.net':80
  • 'qu###study.net':80
  • 'qu###once.net':80
  • 'th###nce.net':80
  • 'th###oss.net':80
  • 'th###tudy.net':80
  • 'qu###loss.net':80
  • 'tr###free.net':80
  • 'mi###orty.net':80
  • 'mi###ree.net':80
  • 'cl###once.net':80
  • 'da###nce.net':80
  • 'tr###forty.net':80
  • 'tr###wall.net':80
  • 'wi###ree.net':80
  • 'mi###all.net':80
  • 'mi###ther.net':80
  • 'tr###other.net':80
  • 'me###nce.net':80
  • 'si###nce.net':80
  • 'si###oss.net':80
  • 'si###tudy.net':80
  • 'me###oss.net':80
  • 'cl###uncle.net':80
  • 'cl###loss.net':80
  • 'da###oss.net':80
  • 'da###tudy.net':80
  • 'da###ncle.net':80
  • 'cl###study.net':80
  • 'ca###oss.net':80
  • 'cl###edge.net':80
  • 'da###dge.net':80
  • 'da###rmy.net':80
  • 'da###pril.net':80
  • 'cl###army.net':80
  • 'mi###ncle.net':80
  • 'mi###oss.net':80
  • 'tr###loss.net':80
  • 'tr###study.net':80
  • 'tr###uncle.net':80
  • 'mi###tudy.net':80
  • 'de###lxc.com':80
  • 'me###rmy.net':80
  • 'be##lxc.com':80
  • 'ri###nstorm.net':80
  • 'af###sllc.com':80
  • 'si###rmy.net':80
  • 'da###ray.net':80
  • 'cl###april.net':80
  • 'cl###gray.net':80
  • 'me###dge.net':80
  • 'si###dge.net':80
  • 'th###loss.net':80
  • 'si###loss.net':80
  • 'si###study.net':80
  • 'si###uncle.net':80
  • 'th###study.net':80
  • 'th###once.net':80
  • 'ca###tudy.net':80
  • 'he###tudy.net':80
  • 'he###ncle.net':80
  • 'si###once.net':80
  • 'ca###ncle.net':80
  • 'du###ncle.net':80
  • 'wi###tudy.net':80
  • 'wi###ncle.net':80
  • 'mi###nce.net':80
  • 'tr###once.net':80
  • 'du###tudy.net':80
  • 'du###nce.net':80
  • 'th###uncle.net':80
  • 'wi###nce.net':80
  • 'wi###oss.net':80
  • 'du###oss.net':80
TCP:
HTTP GET requests:
  • http://mo###tudy.net/index.php
  • http://su###yloss.net/index.php
  • http://su###ystudy.net/index.php
  • http://su###yuncle.net/index.php
  • http://mo###ncle.net/index.php
  • http://mo###oss.net/index.php
  • http://si###ncle.net/index.php
  • http://me###tudy.net/index.php
  • http://me###ncle.net/index.php
  • http://su###yonce.net/index.php
  • http://mo###nce.net/index.php
  • http://qu###uncle.net/index.php
  • http://th###ncle.net/index.php
  • http://he###nce.net/index.php
  • http://he###oss.net/index.php
  • http://ca###nce.net/index.php
  • http://qu###study.net/index.php
  • http://qu###once.net/index.php
  • http://th###nce.net/index.php
  • http://th###oss.net/index.php
  • http://th###tudy.net/index.php
  • http://qu###loss.net/index.php
  • http://tr###free.net/index.php
  • http://mi###orty.net/index.php
  • http://mi###ree.net/index.php
  • http://cl###once.net/index.php
  • http://da###nce.net/index.php
  • http://tr###forty.net/index.php
  • http://tr###wall.net/index.php
  • http://wi###ree.net/index.php
  • http://mi###all.net/index.php
  • http://mi###ther.net/index.php
  • http://tr###other.net/index.php
  • http://me###nce.net/index.php
  • http://si###nce.net/index.php
  • http://si###oss.net/index.php
  • http://si###tudy.net/index.php
  • http://me###oss.net/index.php
  • http://cl###uncle.net/index.php
  • http://cl###loss.net/index.php
  • http://da###oss.net/index.php
  • http://da###tudy.net/index.php
  • http://da###ncle.net/index.php
  • http://cl###study.net/index.php
  • http://ca###oss.net/index.php
  • http://cl###edge.net/index.php
  • http://da###dge.net/index.php
  • http://da###rmy.net/index.php
  • http://da###pril.net/index.php
  • http://cl###army.net/index.php
  • http://mi###ncle.net/index.php
  • http://mi###oss.net/index.php
  • http://tr###loss.net/index.php
  • http://tr###study.net/index.php
  • http://tr###uncle.net/index.php
  • http://mi###tudy.net/index.php
  • http://de###lxc.com/index.php
  • http://me###rmy.net/index.php
  • http://be##lxc.com/index.php
  • http://ri###nstorm.net/index.php
  • http://af###sllc.com/index.php
  • http://si###rmy.net/index.php
  • http://da###ray.net/index.php
  • http://cl###april.net/index.php
  • http://cl###gray.net/index.php
  • http://me###dge.net/index.php
  • http://si###dge.net/index.php
  • http://th###loss.net/index.php
  • http://si###loss.net/index.php
  • http://si###study.net/index.php
  • http://si###uncle.net/index.php
  • http://th###study.net/index.php
  • http://th###once.net/index.php
  • http://ca###tudy.net/index.php
  • http://he###tudy.net/index.php
  • http://he###ncle.net/index.php
  • http://si###once.net/index.php
  • http://ca###ncle.net/index.php
  • http://du###ncle.net/index.php
  • http://wi###tudy.net/index.php
  • http://wi###ncle.net/index.php
  • http://mi###nce.net/index.php
  • http://tr###once.net/index.php
  • http://du###tudy.net/index.php
  • http://du###nce.net/index.php
  • http://th###uncle.net/index.php
  • http://wi###nce.net/index.php
  • http://wi###oss.net/index.php
  • http://du###oss.net/index.php
UDP:
  • DNS ASK su###ystudy.net
  • DNS ASK mo###tudy.net
  • DNS ASK mo###ncle.net
  • DNS ASK th###nce.net
  • DNS ASK su###yuncle.net
  • DNS ASK su###yloss.net
  • DNS ASK me###ncle.net
  • DNS ASK si###ncle.net
  • DNS ASK mo###nce.net
  • DNS ASK mo###oss.net
  • DNS ASK su###yonce.net
  • DNS ASK he###nce.net
  • DNS ASK qu###uncle.net
  • DNS ASK ca###nce.net
  • DNS ASK ca###oss.net
  • DNS ASK he###oss.net
  • DNS ASK th###ncle.net
  • DNS ASK th###oss.net
  • DNS ASK qu###once.net
  • DNS ASK qu###loss.net
  • DNS ASK qu###study.net
  • DNS ASK th###tudy.net
  • DNS ASK me###tudy.net
  • DNS ASK tr###free.net
  • DNS ASK mi###orty.net
  • DNS ASK mi###ree.net
  • DNS ASK cl###once.net
  • DNS ASK da###nce.net
  • DNS ASK tr###forty.net
  • DNS ASK tr###wall.net
  • DNS ASK wi###ree.net
  • DNS ASK mi###all.net
  • DNS ASK mi###ther.net
  • DNS ASK tr###other.net
  • DNS ASK me###nce.net
  • DNS ASK si###nce.net
  • DNS ASK si###oss.net
  • DNS ASK si###tudy.net
  • DNS ASK me###oss.net
  • DNS ASK cl###uncle.net
  • DNS ASK cl###loss.net
  • DNS ASK da###oss.net
  • DNS ASK da###tudy.net
  • DNS ASK da###ncle.net
  • DNS ASK cl###study.net
  • DNS ASK cl###edge.net
  • DNS ASK da###dge.net
  • DNS ASK da###rmy.net
  • DNS ASK da###pril.net
  • DNS ASK cl###army.net
  • DNS ASK mi###ncle.net
  • DNS ASK mi###oss.net
  • DNS ASK tr###loss.net
  • DNS ASK tr###study.net
  • DNS ASK tr###uncle.net
  • DNS ASK mi###tudy.net
  • DNS ASK de###lxc.com
  • DNS ASK me###rmy.net
  • DNS ASK be##lxc.com
  • DNS ASK ri###nstorm.net
  • DNS ASK af###sllc.com
  • DNS ASK si###rmy.net
  • DNS ASK da###ray.net
  • DNS ASK cl###april.net
  • DNS ASK cl###gray.net
  • DNS ASK me###dge.net
  • DNS ASK si###dge.net
  • DNS ASK th###loss.net
  • DNS ASK si###loss.net
  • DNS ASK si###study.net
  • DNS ASK si###uncle.net
  • DNS ASK th###study.net
  • DNS ASK th###once.net
  • DNS ASK ca###tudy.net
  • DNS ASK he###tudy.net
  • DNS ASK he###ncle.net
  • DNS ASK si###once.net
  • DNS ASK ca###ncle.net
  • DNS ASK du###ncle.net
  • DNS ASK wi###tudy.net
  • DNS ASK wi###ncle.net
  • DNS ASK mi###nce.net
  • DNS ASK tr###once.net
  • DNS ASK du###tudy.net
  • DNS ASK du###nce.net
  • DNS ASK th###uncle.net
  • DNS ASK wi###nce.net
  • DNS ASK wi###oss.net
  • DNS ASK du###oss.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.
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Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

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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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