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Trojan.Encoder.29808

Added to the Dr.Web virus database: 2019-10-17

Virus description added:

Technical Information

Malicious functions
Reads files which store third party applications passwords
  • %HOMEPATH%\desktop\coffee.bmp
  • %HOMEPATH%\desktop\correct.avi
  • %HOMEPATH%\desktop\dashborder_96.bmp
  • %HOMEPATH%\desktop\hadac_newsletter_july_2010_final.docx
  • %HOMEPATH%\desktop\howto-index.html
  • %HOMEPATH%\desktop\issi2013_template_for_posters.docx
  • %HOMEPATH%\desktop\ituneshelpunavailable.html
  • %HOMEPATH%\desktop\ovp25012015.doc
  • %HOMEPATH%\desktop\split.avi
  • %HOMEPATH%\desktop\trivial-merge.html
Modifies file system
Creates the following files
  • %HOMEPATH%\favorites\links\почта.url
  • %HOMEPATH%\favorites\links\яндекс.url
Moves the following files
  • from %APPDATA%\.purple\prefs.xml to %APPDATA%\.purple\prefs.xml.brick
  • from %APPDATA%\telegram desktop\unins000.exe to %APPDATA%\telegram desktop\unins000.exe.brick
  • from %APPDATA%\telegram desktop\updater.exe to %APPDATA%\telegram desktop\updater.exe.brick
  • from %APPDATA%\thunderbird\profiles\cr5sc40q.default\blocklist.xml to %APPDATA%\thunderbird\profiles\cr5sc40q.default\blocklist.xml.brick
  • from %APPDATA%\thunderbird\profiles\cr5sc40q.default\cert8.db to %APPDATA%\thunderbird\profiles\cr5sc40q.default\cert8.db.brick
  • from %APPDATA%\thunderbird\profiles\cr5sc40q.default\key3.db to %APPDATA%\thunderbird\profiles\cr5sc40q.default\key3.db.brick
  • from %APPDATA%\thunderbird\profiles\cr5sc40q.default\mailviews.dat to %APPDATA%\thunderbird\profiles\cr5sc40q.default\mailviews.dat.brick
  • from %APPDATA%\thunderbird\profiles\cr5sc40q.default\secmod.db to %APPDATA%\thunderbird\profiles\cr5sc40q.default\secmod.db.brick
  • from %APPDATA%\thunderbird\profiles\cr5sc40q.default\virtualfolders.dat to %APPDATA%\thunderbird\profiles\cr5sc40q.default\virtualfolders.dat.brick
  • from %APPDATA%\winrar\version.dat to %APPDATA%\winrar\version.dat.brick
  • from %HOMEPATH%\favorites\links\почта.url to %HOMEPATH%\favorites\links\почта.url.brick
  • from %HOMEPATH%\favorites\links\яндекс.url to %HOMEPATH%\favorites\links\яндекс.url.brick
  • from %TEMP%\aucheck_parser.txt to %TEMP%\aucheck_parser.txt.brick
  • from %TEMP%\dd_clwireg.txt to %TEMP%\dd_clwireg.txt.brick
  • from %TEMP%\dd_depcheck_netfx20_exp_35.txt to %TEMP%\dd_depcheck_netfx20_exp_35.txt.brick
  • from %TEMP%\dd_depcheck_netfx_exp_35.txt to %TEMP%\dd_depcheck_netfx_exp_35.txt.brick
  • from %TEMP%\dd_dotnetfx20error.txt to %TEMP%\dd_dotnetfx20error.txt.brick
  • from %TEMP%\dd_dotnetfx20install.txt to %TEMP%\dd_dotnetfx20install.txt.brick
  • from %TEMP%\dd_dotnetfx35error.txt to %TEMP%\dd_dotnetfx35error.txt.brick
  • from %TEMP%\dd_dotnetfx35install.txt to %TEMP%\dd_dotnetfx35install.txt.brick
  • from %TEMP%\dd_dotnetfx40_full_x86_x64_decompression_log.txt to %TEMP%\dd_dotnetfx40_full_x86_x64_decompression_log.txt.brick
  • from %TEMP%\dd_dotnetfx45_full_setup_decompression_log.txt to %TEMP%\dd_dotnetfx45_full_setup_decompression_log.txt.brick
  • from %TEMP%\dd_ndp452-kb2901907-x86-x64-allos-enu_decompression_log.txt to %TEMP%\dd_ndp452-kb2901907-x86-x64-allos-enu_decompression_log.txt.brick
  • from %TEMP%\dd_net_framework20_setup74f9.txt to %TEMP%\dd_net_framework20_setup74f9.txt.brick
  • from %TEMP%\dd_net_framework30_setup7762.txt to %TEMP%\dd_net_framework30_setup7762.txt.brick
  • from %TEMP%\dd_net_framework35_msi77c4.txt to %TEMP%\dd_net_framework35_msi77c4.txt.brick
  • from %TEMP%\dd_wcf_retca4a2a.txt to %TEMP%\dd_wcf_retca4a2a.txt.brick
  • from %TEMP%\dd_xps.txt to %TEMP%\dd_xps.txt.brick
  • from %APPDATA%\telegram desktop\unins000.dat to %APPDATA%\telegram desktop\unins000.dat.brick
  • from %TEMP%\downloader.exe to %TEMP%\downloader.exe.brick
  • from %APPDATA%\telegram desktop\telegram.exe to %APPDATA%\telegram desktop\telegram.exe.brick
  • from %APPDATA%\sun\java\au\au.cab to %APPDATA%\sun\java\au\au.cab.brick
  • from %APPDATA%\.purple\status.xml to %APPDATA%\.purple\status.xml.brick
  • from %APPDATA%\icq-profile\installerlang.xml to %APPDATA%\icq-profile\installerlang.xml.brick
  • from %APPDATA%\microsoft\dbgclr\7.1\objbrow.dat to %APPDATA%\microsoft\dbgclr\7.1\objbrow.dat.brick
  • from %APPDATA%\microsoft\internet explorer\brndlog.txt to %APPDATA%\microsoft\internet explorer\brndlog.txt.brick
  • from %APPDATA%\microsoft\internet explorer\quick launch\google chrome.lnk to %APPDATA%\microsoft\internet explorer\quick launch\google chrome.lnk.brick
  • from %APPDATA%\microsoft\internet explorer\quick launch\icq.lnk to %APPDATA%\microsoft\internet explorer\quick launch\icq.lnk.brick
  • from %APPDATA%\microsoft\internet explorer\quick launch\launch internet explorer browser.lnk to %APPDATA%\microsoft\internet explorer\quick launch\launch internet explorer browser.lnk.brick
  • from %APPDATA%\microsoft\internet explorer\quick launch\microsoft office outlook.lnk to %APPDATA%\microsoft\internet explorer\quick launch\microsoft office outlook.lnk.brick
  • from %APPDATA%\microsoft\internet explorer\quick launch\mozilla firefox.lnk to %APPDATA%\microsoft\internet explorer\quick launch\mozilla firefox.lnk.brick
  • from %APPDATA%\microsoft\internet explorer\quick launch\mozilla thunderbird.lnk to %APPDATA%\microsoft\internet explorer\quick launch\mozilla thunderbird.lnk.brick
  • from %APPDATA%\microsoft\internet explorer\quick launch\opera.lnk to %APPDATA%\microsoft\internet explorer\quick launch\opera.lnk.brick
  • from %APPDATA%\microsoft\internet explorer\quick launch\qip 2012.lnk to %APPDATA%\microsoft\internet explorer\quick launch\qip 2012.lnk.brick
  • from %APPDATA%\microsoft\internet explorer\quick launch\telegram.lnk to %APPDATA%\microsoft\internet explorer\quick launch\telegram.lnk.brick
  • from %APPDATA%\microsoft\internet explorer\quick launch\windows media player.lnk to %APPDATA%\microsoft\internet explorer\quick launch\windows media player.lnk.brick
  • from %APPDATA%\microsoft\msdn\7.0\objbrow.dat to %APPDATA%\microsoft\msdn\7.0\objbrow.dat.brick
  • from %APPDATA%\microsoft\outlook\outcmd.dat to %APPDATA%\microsoft\outlook\outcmd.dat.brick
  • from %APPDATA%\microsoft\outlook\outlook.xml to %APPDATA%\microsoft\outlook\outlook.xml.brick
  • from %APPDATA%\microsoft\publisher\pubcmd12.dat to %APPDATA%\microsoft\publisher\pubcmd12.dat.brick
  • from %APPDATA%\mozilla\firefox\profiles\22ie2h77.default\blocklist.xml to %APPDATA%\mozilla\firefox\profiles\22ie2h77.default\blocklist.xml.brick
  • from %APPDATA%\opera software\opera stable\favorites.db to %APPDATA%\opera software\opera stable\favorites.db.brick
  • from %APPDATA%\opera software\opera stable\opera_shutdown_ms.txt to %APPDATA%\opera software\opera stable\opera_shutdown_ms.txt.brick
  • from %APPDATA%\opera software\opera stable\thumbnails.db to %APPDATA%\opera software\opera stable\thumbnails.db.brick
  • from %APPDATA%\opera software\opera stable\dictionaries\dictionaries.xml to %APPDATA%\opera software\opera stable\dictionaries\dictionaries.xml.brick
  • from %APPDATA%\qipguard\chrome.dll to %APPDATA%\qipguard\chrome.dll.brick
  • from %APPDATA%\qipguard\qipguard.exe to %APPDATA%\qipguard\qipguard.exe.brick
  • from %APPDATA%\qipguard\qipguard_upd.exe to %APPDATA%\qipguard\qipguard_upd.exe.brick
  • from %APPDATA%\qipguard\sqlite3.dll to %APPDATA%\qipguard\sqlite3.dll.brick
  • from %APPDATA%\telegram desktop\log.txt to %APPDATA%\telegram desktop\log.txt.brick
  • from %TEMP%\mirc743.exe to %TEMP%\mirc743.exe.brick
Moves itself
  • from <Full path to file> to C:\user\systems\local.exe
Modifies user data files (Trojan.Encoder).
Changes user data files extensions (Trojan.Encoder).

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.

Find out more about Dr.Web for Android

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