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Trojan.DownLoader17.54079

Added to the Dr.Web virus database: 2015-11-18

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Color Server Process KtmRm NetBIOS' = '<SYSTEM32>\mtqzcaimhsal.exe'
Creates the following services:
  • [<HKLM>\SYSTEM\ControlSet001\Services\File Computer WMI Class Discovery CNG] '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>\ralbyampfsl.exe' "<SYSTEM32>\mtqzcaimhsal.exe"
  • '%WINDIR%\Temp\olzdyio2x6grqwwg.exe' -r 50558 tcp
  • '%TEMP%\olzdyio2r9crqwwgtqoit2z.exe'
  • '<SYSTEM32>\mtqzcaimhsal.exe'
Modifies file system :
Creates the following files:
  • <SYSTEM32>\ayjswbjw\run
  • <SYSTEM32>\ayjswbjw\rng
  • %WINDIR%\Temp\olzdyio2x6grqwwg.exe
  • <SYSTEM32>\ayjswbjw\cfg
  • <SYSTEM32>\ralbyampfsl.exe
  • %TEMP%\olzdyio2r9crqwwgtqoit2z.exe
  • <SYSTEM32>\ayjswbjw\tst
  • <SYSTEM32>\mtqzcaimhsal.exe
  • <SYSTEM32>\ayjswbjw\etc
Sets the 'hidden' attribute to the following files:
  • <SYSTEM32>\ralbyampfsl.exe
  • <SYSTEM32>\mtqzcaimhsal.exe
Deletes the following files:
  • %WINDIR%\Temp\olzdyio2x6grqwwg.exe
  • <DRIVERS>\etc\hosts
  • %TEMP%\olzdyio2r9crqwwgtqoit2z.exe
Substitutes the HOSTS file.
Network activity:
Connects to:
  • 'th###threw.net':80
  • 'th###cross.net':80
  • 'lo###loor.net':80
  • 'lo###hade.net':80
  • 'fe###loor.net':80
  • 'th###shade.net':80
  • 'dr###cross.net':80
  • 'wi###ross.net':80
  • 'wi###hrew.net':80
  • 'th###floor.net':80
  • 'dr###threw.net':80
  • 'fe###hade.net':80
  • 'hi###hade.net':80
  • 'wh###hade.net':80
  • 'wh###ross.net':80
  • 'wh###hrew.net':80
  • 'hi###ross.net':80
  • 'hi###loor.net':80
  • 'fe###ross.net':80
  • 'lo###ross.net':80
  • 'lo###hrew.net':80
  • 'wh###loor.net':80
  • 'fe###hrew.net':80
  • 'so###ould.net':80
  • 'pi###each.net':80
  • 'pi###ould.net':80
  • 'pi###sual.net':80
  • 'so###sual.net':80
  • 'so###each.net':80
  • 'si###sual.net':80
  • 'ro###ould.net':80
  • 'ro###sual.net':80
  • 'pi###rave.net':80
  • 'so###rave.net':80
  • 'ab###rave.net':80
  • 'wi###loor.net':80
  • 'kn###sual.net':80
  • 'dr###floor.net':80
  • 'dr###shade.net':80
  • 'wi###hade.net':80
  • 'ab###sual.net':80
  • 'ab###each.net':80
  • 'kn###rave.net':80
  • 'kn###each.net':80
  • 'kn###ould.net':80
  • 'ab###ould.net':80
  • 'kn###ross.net':80
  • 'ab###ross.net':80
  • 'ab###hrew.net':80
  • 'wi###ull.net':80
  • 'kn###hrew.net':80
  • 'kn###hade.net':80
  • 'pi###hrew.net':80
  • 'so###hrew.net':80
  • 'ab###loor.net':80
  • 'ab###hade.net':80
  • 'kn###loor.net':80
  • 'dr###pull.net':80
  • 'mi###hown.net':80
  • 'ab###ell.net':80
  • 'mo###ugust.net':80
  • 'cr#####onaraminta.net':80
  • 'le###form.net':80
  • 'mo###olor.net':80
  • 'ri###nstorm.net':80
  • 'be##lxc.com':80
  • 'al###being.net':80
  • 'pr####tbottom.net':80
  • 'ca####nbring.net':80
  • 'ju###hrew.net':80
  • 'mo###ross.net':80
  • 'mo###hrew.net':80
  • 'ro###loor.net':80
  • 'si###loor.net':80
  • 'ju###ross.net':80
  • 'ju###loor.net':80
  • 'hi###hrew.net':80
  • 'mo###loor.net':80
  • 'mo###hade.net':80
  • 'ju###hade.net':80
  • 'si###hade.net':80
  • 'so###hade.net':80
  • 'pi###loor.net':80
  • 'pi###hade.net':80
  • 'pi###ross.net':80
  • 'so###ross.net':80
  • 'so###loor.net':80
  • 'si###ross.net':80
  • 'ro###hade.net':80
  • 'ro###ross.net':80
  • 'ro###hrew.net':80
  • 'si###hrew.net':80
TCP:
HTTP GET requests:
  • http://th###threw.net/index.php
  • http://th###cross.net/index.php
  • http://lo###loor.net/index.php
  • http://lo###hade.net/index.php
  • http://fe###loor.net/index.php
  • http://th###shade.net/index.php
  • http://dr###cross.net/index.php
  • http://wi###ross.net/index.php
  • http://wi###hrew.net/index.php
  • http://th###floor.net/index.php
  • http://dr###threw.net/index.php
  • http://fe###hade.net/index.php
  • http://hi###hade.net/index.php
  • http://wh###hade.net/index.php
  • http://wh###ross.net/index.php
  • http://wh###hrew.net/index.php
  • http://hi###ross.net/index.php
  • http://hi###loor.net/index.php
  • http://fe###ross.net/index.php
  • http://lo###ross.net/index.php
  • http://lo###hrew.net/index.php
  • http://wh###loor.net/index.php
  • http://fe###hrew.net/index.php
  • http://so###ould.net/index.php
  • http://pi###each.net/index.php
  • http://pi###ould.net/index.php
  • http://pi###sual.net/index.php
  • http://so###sual.net/index.php
  • http://so###each.net/index.php
  • http://si###sual.net/index.php
  • http://ro###ould.net/index.php
  • http://ro###sual.net/index.php
  • http://pi###rave.net/index.php
  • http://so###rave.net/index.php
  • http://ab###rave.net/index.php
  • http://wi###loor.net/index.php
  • http://kn###sual.net/index.php
  • http://dr###floor.net/index.php
  • http://dr###shade.net/index.php
  • http://wi###hade.net/index.php
  • http://ab###sual.net/index.php
  • http://ab###each.net/index.php
  • http://kn###rave.net/index.php
  • http://kn###each.net/index.php
  • http://kn###ould.net/index.php
  • http://ab###ould.net/index.php
  • http://kn###ross.net/index.php
  • http://ab###ross.net/index.php
  • http://ab###hrew.net/index.php
  • http://wi###ull.net/index.php
  • http://kn###hrew.net/index.php
  • http://kn###hade.net/index.php
  • http://pi###hrew.net/index.php
  • http://so###hrew.net/index.php
  • http://ab###loor.net/index.php
  • http://ab###hade.net/index.php
  • http://kn###loor.net/index.php
  • http://dr###pull.net/index.php
  • http://mi###hown.net/index.php
  • http://ab###ell.net/index.php
  • http://mo###ugust.net/index.php
  • http://cr#####onaraminta.net/index.php
  • http://le###form.net/index.php
  • http://mo###olor.net/index.php
  • http://ri###nstorm.net/index.php
  • http://be##lxc.com/index.php
  • http://al###being.net/index.php
  • http://pr####tbottom.net/index.php
  • http://ca####nbring.net/index.php
  • http://ju###hrew.net/index.php
  • http://mo###ross.net/index.php
  • http://mo###hrew.net/index.php
  • http://ro###loor.net/index.php
  • http://si###loor.net/index.php
  • http://ju###ross.net/index.php
  • http://ju###loor.net/index.php
  • http://hi###hrew.net/index.php
  • http://mo###loor.net/index.php
  • http://mo###hade.net/index.php
  • http://ju###hade.net/index.php
  • http://si###hade.net/index.php
  • http://so###hade.net/index.php
  • http://pi###loor.net/index.php
  • http://pi###hade.net/index.php
  • http://pi###ross.net/index.php
  • http://so###ross.net/index.php
  • http://so###loor.net/index.php
  • http://si###ross.net/index.php
  • http://ro###hade.net/index.php
  • http://ro###ross.net/index.php
  • http://ro###hrew.net/index.php
  • http://si###hrew.net/index.php
UDP:
  • DNS ASK th###threw.net
  • DNS ASK th###cross.net
  • DNS ASK lo###loor.net
  • DNS ASK lo###hade.net
  • DNS ASK fe###loor.net
  • DNS ASK th###shade.net
  • DNS ASK dr###cross.net
  • DNS ASK wi###ross.net
  • DNS ASK wi###hrew.net
  • DNS ASK th###floor.net
  • DNS ASK dr###threw.net
  • DNS ASK fe###hade.net
  • DNS ASK hi###hade.net
  • DNS ASK wh###hade.net
  • DNS ASK wh###ross.net
  • DNS ASK wh###hrew.net
  • DNS ASK hi###ross.net
  • DNS ASK hi###loor.net
  • DNS ASK fe###ross.net
  • DNS ASK lo###ross.net
  • DNS ASK lo###hrew.net
  • DNS ASK wh###loor.net
  • DNS ASK fe###hrew.net
  • DNS ASK so###ould.net
  • DNS ASK pi###each.net
  • DNS ASK pi###ould.net
  • DNS ASK pi###sual.net
  • DNS ASK so###sual.net
  • DNS ASK so###each.net
  • DNS ASK si###sual.net
  • DNS ASK ro###ould.net
  • DNS ASK ro###sual.net
  • DNS ASK pi###rave.net
  • DNS ASK so###rave.net
  • DNS ASK ab###rave.net
  • DNS ASK wi###loor.net
  • DNS ASK kn###sual.net
  • DNS ASK dr###floor.net
  • DNS ASK dr###shade.net
  • DNS ASK wi###hade.net
  • DNS ASK ab###sual.net
  • DNS ASK ab###each.net
  • DNS ASK kn###rave.net
  • DNS ASK kn###each.net
  • DNS ASK kn###ould.net
  • DNS ASK ab###ould.net
  • DNS ASK hi###hrew.net
  • DNS ASK ab###hrew.net
  • DNS ASK kn###ross.net
  • DNS ASK kn###hrew.net
  • DNS ASK dr###pull.net
  • DNS ASK wi###ull.net
  • DNS ASK ab###ross.net
  • DNS ASK ab###loor.net
  • DNS ASK pi###hrew.net
  • DNS ASK kn###loor.net
  • DNS ASK kn###hade.net
  • DNS ASK ab###hade.net
  • DNS ASK mi###hown.net
  • DNS ASK ab###ell.net
  • DNS ASK mo###ugust.net
  • DNS ASK cr#####onaraminta.net
  • DNS ASK le###form.net
  • DNS ASK mo###olor.net
  • DNS ASK ri###nstorm.net
  • DNS ASK be##lxc.com
  • DNS ASK al###being.net
  • DNS ASK pr####tbottom.net
  • DNS ASK ca####nbring.net
  • DNS ASK so###hrew.net
  • DNS ASK mo###hrew.net
  • DNS ASK ju###hrew.net
  • DNS ASK si###loor.net
  • DNS ASK si###hade.net
  • DNS ASK ro###loor.net
  • DNS ASK mo###ross.net
  • DNS ASK mo###loor.net
  • DNS ASK ju###loor.net
  • DNS ASK ju###hade.net
  • DNS ASK ju###ross.net
  • DNS ASK mo###hade.net
  • DNS ASK so###hade.net
  • DNS ASK pi###loor.net
  • DNS ASK pi###hade.net
  • DNS ASK pi###ross.net
  • DNS ASK so###ross.net
  • DNS ASK so###loor.net
  • DNS ASK si###ross.net
  • DNS ASK ro###hade.net
  • DNS ASK ro###ross.net
  • DNS ASK ro###hrew.net
  • DNS ASK si###hrew.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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  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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