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Trojan.DownLoader38.7184

Added to the Dr.Web virus database: 2021-03-22

Virus description added:

Technical Information

Malicious functions
Creates and executes the following
  • '%ProgramFiles(x86)%\google\chrome\application\chrome.exe' --type=gpu-process --channel="1288.0.1803486885\1649538165" --supports-dual-gpus=false --gpu-driver-bug-workarounds=1,19,42 --gpu-vendor-id=0x0000 --gpu-device-id=0x0000 --gpu-driver-vendor --g...
  • '%ProgramFiles(x86)%\google\chrome\application\chrome.exe' --type=renderer --enable-deferred-image-decoding --lang=ru --force-fieldtrials="BackgroundRendererProcesses/Disallow/BrowserBlacklist/Enabled/*CTRequiredForEVTrial/RequirementEnforced/CaptivePo...
  • '%ProgramFiles(x86)%\google\chrome\application\chrome.exe' --type=renderer --enable-deferred-image-decoding --lang=ru --force-fieldtrials="BackgroundRendererProcesses/Disallow/*BrowserBlacklist/Enabled/*CTRequiredForEVTrial/RequirementEnforced/CaptiveP...
Injects code into
the following user processes:
  • chrome.exe
Modifies file system
Creates the following files
  • %TEMP%\81ef.tmp
  • %TEMP%\scoped_dir_1288_21270\decoded_images
  • %TEMP%\scoped_dir_1288_21270\crx_install\_metadata\verified_contents.json
  • %TEMP%\scoped_dir_1288_21270\crx_install\audio\chime.wav
  • %TEMP%\scoped_dir_1288_21270\crx_install\_platform_specific\x86-64_ru\hotword-x86-64.nexe
  • %TEMP%\scoped_dir_1288_21270\crx_install\_platform_specific\x86-64_ru\hotword.data
  • %TEMP%\scoped_dir_1288_21270\crx_install\hotword_ru.nmf
  • %TEMP%\scoped_dir_1288_21270\crx_install\hotword_pt-br.nmf
  • %TEMP%\scoped_dir_1288_21270\crx_install\hotword_.nmf
  • %TEMP%\scoped_dir_1288_21270\crx_install\hotword_ko.nmf
  • %TEMP%\scoped_dir_1288_21270\crx_install\hotword_ja.nmf
  • %TEMP%\scoped_dir_1288_21270\crx_install\hotword_it.nmf
  • %TEMP%\scoped_dir_1288_21270\crx_install\hotword_fr.nmf
  • %TEMP%\scoped_dir_1288_21270\crx_install\hotword_es.nmf
  • %TEMP%\scoped_dir_1288_21270\crx_install\hotword_en-gb.nmf
  • %TEMP%\scoped_dir_1288_21270\crx_install\hotword_en-au.nmf
  • %TEMP%\scoped_dir_1288_21270\crx_install\hotword_de.nmf
  • %TEMP%\scoped_dir_1288_21270\crx_install\manifest.json
  • %TEMP%\scoped_dir_1288_21270\81ef.tmp
  • %TEMP%\8673.tmp
  • %TEMP%\scoped_dir_1288_21270\decoded_message_catalogs
  • %TEMP%\etilqs_ocu94k8dtjdien7
Deletes the following files
  • %TEMP%\8673.tmp
  • %TEMP%\scoped_dir_1288_21270\81ef.tmp
  • %TEMP%\scoped_dir_1288_21270\decoded_images
  • %TEMP%\scoped_dir_1288_21270\decoded_message_catalogs
  • %TEMP%\81ef.tmp
Network activity
Connects to
  • 'clients4.google.com':443
  • 'tp#.####lesyndication.com':443
  • 'cm.#.##ubleclick.net':443
  • 'ds######.casalemedia.com':443
  • 'go#######4.g.doubleclick.net':443
  • 's0.#mdn.net':443
  • 'ib.##nxs.com':443
  • 'us##.openx.net':443
  • 'sy##.teads.tv':443
  • 'e.###.addthis.com':443
  • 'd.##kn.com':443
  • 'id.##cdn.com':443
  • 'z.###tads.com':443
  • 'rt#.#penx.net':443
  • 'pi###.##biconproject.com':443
  • 'ss######.casalemedia.com':443
  • 'cm#.##antserve.com':443
  • 'pi###.#veresttech.net':443
  • 'microsoft.com':80
  • 'im####.pubmatic.com':443
  • 'go#####agservices.com':443
  • 'op#.###ectiveportal.com':443
  • 'adservice.google.com':443
  • 'pa#####.#oogleadservices.com':443
  • 'clients2.google.com':443
  • 'hi.ru':80
  • 'tr######e.googleapis.com':443
  • 'gs##tic.com':80
  • 'clients3.google.com':443
  • 'ed###l.gvt1.com':80
  • 'hi.ru':443
  • 'st####.criteo.net':443
  • 'pa#####.#ooglesyndication.com':443
  • 'ph####hosting.ru':80
  • 'fo###.gstatic.com':443
  • 'co####r.yadro.ru':443
  • 'go######s.g.doubleclick.net':443
  • 'ph####hosting.ru':443
  • 'mc.yandex.ru':443
  • 'tn###ounter.ru':443
  • 'gu#.#riteo.com':443
  • 'sb.#####cardresearch.com':443
  • 'se####.cpmstar.com':443
  • 'ad####ice.google.nl':443
  • 'x.##2.us':80
TCP
HTTP GET requests
  • http://hi.ru/images/green.png
  • http://ph####hosting.ru/161641860528464.jpg
  • http://ph####hosting.ru/161641860589965.jpg
  • http://ph####hosting.ru/161641860545978.jpg
  • http://ph####hosting.ru/161641860514163.jpg
  • http://ph####hosting.ru/161641860587069.jpg
  • http://ph####hosting.ru/161641860539806.jpg
  • http://ph####hosting.ru/161641860240875.jpg
  • http://ph####hosting.ru/161641860458676.jpg
  • http://ph####hosting.ru/161641860419593.jpg
  • http://ph####hosting.ru/161641860479307.jpg
  • http://ph####hosting.ru/161641860323394.jpg
  • http://ph####hosting.ru/161641860565422.jpg
  • http://ph####hosting.ru/161641860536998.jpg
  • http://ph####hosting.ru/161641860360882.jpg
  • http://ph####hosting.ru/161641860362838.jpg
  • http://ph####hosting.ru/161641860315268.jpg
  • http://ph####hosting.ru/161641860355105.jpg
  • http://ph####hosting.ru/161641860127400.jpg
  • http://ph####hosting.ru/161641860182445.jpg
  • http://ph####hosting.ru/161641860379774.jpg
  • http://ph####hosting.ru/161641860362373.jpg
  • http://ph####hosting.ru/161641860312002.jpg
  • http://ph####hosting.ru/161641860360804.jpg
  • http://ph####hosting.ru/161641860240277.jpg
  • http://ph####hosting.ru/161641860261495.jpg
  • http://ph####hosting.ru/161641860250078.jpg
  • http://ph####hosting.ru/161641860297016.jpg
  • http://ph####hosting.ru/161641860295100.jpg
  • http://ph####hosting.ru/161641860226581.jpg
  • http://ph####hosting.ru/161641860565799.jpg
  • http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt
  • 'clients4.google.com':443
  • 'cm.#.##ubleclick.net':443
  • 'gs##tic.com':443
  • 'ds######.casalemedia.com':443
  • 'go#######4.g.doubleclick.net':443
  • 's0.#mdn.net':443
  • 'ib.##nxs.com':443
  • 'us##.openx.net':443
  • 'sy##.teads.tv':443
  • 'id.##cdn.com':443
  • 'd.##kn.com':443
  • 'e.###.addthis.com':443
  • 'z.###tads.com':443
  • 'rt#.#penx.net':443
  • 'pi###.##biconproject.com':443
  • 'cm#.##antserve.com':443
  • 'pi###.#veresttech.net':443
  • 'google.com':443
  • 'tp#.####lesyndication.com':443
  • 'go#####agservices.com':443
  • 'adservice.google.com':443
  • 'clients2.google.com':443
  • 'go###eapis.com':443
  • 'clients3.google.com':443
  • 'hi.ru':443
  • 'st####.criteo.net':443
  • 'pa#####.#ooglesyndication.com':443
  • 'fo###.gstatic.com':443
  • 'co####r.yadro.ru':443
  • 'go######s.g.doubleclick.net':443
  • 'ph####hosting.ru':443
  • 'mc.yandex.ru':443
  • 'tn###ounter.ru':443
  • 'gu#.#riteo.com':443
  • 'sb.#####cardresearch.com':443
  • 'se####.cpmstar.com':443
  • 'pa#####.#oogleadservices.com':443
  • 'ad####ice.google.nl':443
  • 'im####.pubmatic.com':443
  • 'op#.###ectiveportal.com':443
    • UDP
    • DNS ASK clients2.google.com
    • DNS ASK go#####agservices.com
    • DNS ASK tp#.####lesyndication.com
    • DNS ASK s0.#mdn.net
    • DNS ASK cm.#.##ubleclick.net
    • DNS ASK ds######.casalemedia.com
    • DNS ASK go#######4.g.doubleclick.net
    • DNS ASK ib.##nxs.com
    • DNS ASK us##.openx.net
    • DNS ASK sy##.teads.tv
    • DNS ASK id.##cdn.com
    • DNS ASK op#.###ectiveportal.com
    • DNS ASK e.###.addthis.com
    • DNS ASK z.###tads.com
    • DNS ASK rt#.#penx.net
    • DNS ASK pi###.##biconproject.com
    • DNS ASK ss######.casalemedia.com
    • DNS ASK cm#.##antserve.com
    • DNS ASK pi###.#veresttech.net
    • DNS ASK microsoft.com
    • DNS ASK im####.pubmatic.com
    • DNS ASK adservice.google.com
    • DNS ASK d.##kn.com
    • DNS ASK ad####ice.google.nl
    • DNS ASK fo###.#oogleapis.com
    • DNS ASK clients4.google.com
    • DNS ASK google.com
    • DNS ASK go##le.ru
    • DNS ASK go###eapis.com
    • DNS ASK hi.ru
    • DNS ASK tr######e.googleapis.com
    • DNS ASK gs##tic.com
    • DNS ASK clients3.google.com
    • DNS ASK ed###l.gvt1.com
    • DNS ASK st####.criteo.net
    • DNS ASK sb.#####cardresearch.com
    • DNS ASK pa#####.#ooglesyndication.com
    • DNS ASK ph####hosting.ru
    • DNS ASK fo###.gstatic.com
    • DNS ASK co####r.yadro.ru
    • DNS ASK go######s.g.doubleclick.net
    • DNS ASK mc.yandex.ru
    • DNS ASK tn###ounter.ru
    • DNS ASK gu#.#riteo.com
    • DNS ASK se####.cpmstar.com
    • DNS ASK pa#####.#oogleadservices.com
    • DNS ASK x.##2.us
    Miscellaneous
    Searches for the following windows
    • ClassName: 'Chrome_MessageWindow' WindowName: '%LOCALAPPDATA%\Google\Chrome\User Data'

    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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