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Trojan.Encoder.32231

Added to the Dr.Web virus database: 2020-07-27

Virus description added:

Technical Information

To ensure autorun and distribution
Creates the following files on removable media
  • <Drive name for removable media>:\clip_1080_5sec_10mbps_h264.mp4
  • <Drive name for removable media>:\parnas_01.jpeg
Malicious functions
To complicate detection of its presence in the operating system,
deletes volume shadow copies.
Reads files which store third party applications passwords
  • %HOMEPATH%\desktop\contosoroot.cer
  • %HOMEPATH%\desktop\contoso_1.cer
  • %HOMEPATH%\desktop\default.bmp
  • %HOMEPATH%\desktop\dial.bmp
  • %HOMEPATH%\desktop\fi51.doc
  • %HOMEPATH%\desktop\hanni_umami_chapter.doc
  • %HOMEPATH%\desktop\ovp25012015.doc
  • %HOMEPATH%\desktop\sdksampleprivdeveloper.cer
  • %HOMEPATH%\desktop\split.avi
Modifies file system
Creates the following files
  • D:\e3b466-readme.txt
  • %PROGRAMDATA%\e3b466-readme.txt
  • %ProgramFiles(x86)%\steam\skins\e3b466-readme.txt
  • %ProgramFiles(x86)%\microsoft office\office10\e3b466-readme.txt
  • %ProgramFiles(x86)%\msbuild\e3b466-readme.txt
  • C:\far2\addons\e3b466-readme.txt
  • %APPDATA%\mra\e3b466-readme.txt
  • %ProgramFiles(x86)%\steam\html5app\e3b466-readme.txt
  • %ProgramFiles(x86)%\qip 2012\skins\qip\e3b466-readme.txt
  • %PROGRAMDATA%\oracle\java\installcache_x64\e3b466-readme.txt
  • %APPDATA%\winamp\e3b466-readme.txt
  • %ProgramFiles(x86)%\adobe\acrobat reader dc\resource\font\e3b466-readme.txt
  • C:\totalcmd\language\e3b466-readme.txt
  • C:\users\all users\microsoft toolkit\e3b466-readme.txt
  • %ProgramFiles(x86)%\microsoft office\office14\1033\e3b466-readme.txt
  • %ProgramFiles(x86)%\steam\remoteui\static\e3b466-readme.txt
  • %PROGRAMDATA%\microsoft\officesoftwareprotectionplatform\cache\e3b466-readme.txt
  • %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\plug_ins\e3b466-readme.txt
  • %ProgramFiles(x86)%\steam\config\e3b466-readme.txt
  • %ProgramFiles(x86)%\google\chrome\application\e3b466-readme.txt
  • C:\far2\fexcept\e3b466-readme.txt
  • %ProgramFiles(x86)%\steam\steamapps\e3b466-readme.txt
  • %PROGRAMDATA%\microsoft\mf\e3b466-readme.txt
  • %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\javascripts\e3b466-readme.txt
  • %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\idtemplates\enu\e3b466-readme.txt
  • C:\recovery\1195d5a8-f371-11e4-9c00-dd3082671db2\e3b466-readme.txt
  • %CommonProgramFiles(x86)%\adobe\helpcfg\en_us\e3b466-readme.txt
  • %ProgramFiles(x86)%\k-lite codec pack\info\e3b466-readme.txt
  • %APPDATA%\ghisler\e3b466-readme.txt
  • %HOMEPATH%\searches\e3b466-readme.txt
  • %APPDATA%\telegram desktop\e3b466-readme.txt
  • %ProgramFiles(x86)%\k-lite codec pack\tools\e3b466-readme.txt
  • %PROGRAMDATA%\microsoft\assistance\client\1.0\en-us\e3b466-readme.txt
  • %HOMEPATH%\contacts\e3b466-readme.txt
  • C:\users\public\libraries\e3b466-readme.txt
  • %ProgramFiles(x86)%\adobe\acrobat reader dc\e3b466-readme.txt
  • C:\totalcmd\e3b466-readme.txt
  • %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\e3b466-readme.txt
  • C:\users\public\pictures\sample pictures\e3b466-readme.txt
  • C:\far2\e3b466-readme.txt
  • C:\users\public\music\sample music\e3b466-readme.txt
  • C:\users\all users\microsoft toolkit\settings.xml
  • C:\users\all users\sun\java\java update\jaureglist.xml
  • %HOMEPATH%\favorites\msn websites\e3b466-readme.txt
  • C:\users\public\recorded tv\sample media\e3b466-readme.txt
  • %ProgramFiles(x86)%\steam\e3b466-readme.txt
  • %HOMEPATH%\desktop\e3b466-readme.txt
  • %ProgramFiles(x86)%\winamp\e3b466-readme.txt
  • %ProgramFiles(x86)%\k-lite codec pack\icaros\e3b466-readme.txt
  • %LOCALAPPDATA%\msfree inc\e3b466-readme.txt
  • C:\far2\documentation\rus\e3b466-readme.txt
  • %PROGRAMDATA%\microsoft\windows\start menu\programs\steam\e3b466-readme.txt
  • %PROGRAMDATA%\microsoft\crypto\rsa\s-1-5-18\e3b466-readme.txt
  • %ProgramFiles(x86)%\adobe\acrobat reader dc\resource\e3b466-readme.txt
  • C:\users\public\videos\sample videos\e3b466-readme.txt
  • %ProgramFiles(x86)%\qip 2012\e3b466-readme.txt
  • %PROGRAMDATA%\microsoft\user account pictures\e3b466-readme.txt
  • %LOCALAPPDATA%\applicationhistory\e3b466-readme.txt
  • %ProgramFiles(x86)%\mirc\e3b466-readme.txt
  • %HOMEPATH%\favorites\microsoft websites\e3b466-readme.txt
  • %ProgramFiles(x86)%\opera\e3b466-readme.txt
  • %CommonProgramFiles(x86)%\java\java update\e3b466-readme.txt
  • %ProgramFiles(x86)%\winamp\components\e3b466-readme.txt
  • %ProgramFiles(x86)%\k-lite codec pack\icaros\resources\e3b466-readme.txt
Moves the following files
  • from %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\cryptocme.sig to %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\cryptocme.sig.e3b466
  • from %APPDATA%\telegram desktop\log.txt to %APPDATA%\telegram desktop\log.txt.e3b466
  • from %ProgramFiles(x86)%\k-lite codec pack\tools\codectweaktool-1.bin to %ProgramFiles(x86)%\k-lite codec pack\tools\codectweaktool-1.bin.e3b466
  • from %ProgramFiles(x86)%\k-lite codec pack\tools\codectweaktool-0.bin to %ProgramFiles(x86)%\k-lite codec pack\tools\codectweaktool-0.bin.e3b466
  • from %ProgramFiles(x86)%\steam\skins\skins_readme.txt to %ProgramFiles(x86)%\steam\skins\skins_readme.txt.e3b466
  • from %ProgramFiles(x86)%\msbuild\microsoft.office.infopath.targets to %ProgramFiles(x86)%\msbuild\microsoft.office.infopath.targets.e3b466
  • from %ProgramFiles(x86)%\steam\html5app\keybinds.cfg to %ProgramFiles(x86)%\steam\html5app\keybinds.cfg.e3b466
  • from %ProgramFiles(x86)%\microsoft office\office10\thdic.lex to %ProgramFiles(x86)%\microsoft office\office10\thdic.lex.e3b466
  • from %ProgramFiles(x86)%\qip 2012\skins\qip\extended.cfg to %ProgramFiles(x86)%\qip 2012\skins\qip\extended.cfg.e3b466
  • from %ProgramFiles(x86)%\qip 2012\skins\qip\fade.cfg to %ProgramFiles(x86)%\qip 2012\skins\qip\fade.cfg.e3b466
  • from %APPDATA%\winamp\links.xml to %APPDATA%\winamp\links.xml.e3b466
  • from %ProgramFiles(x86)%\adobe\acrobat reader dc\resource\font\adobepistd.otf to %ProgramFiles(x86)%\adobe\acrobat reader dc\resource\font\adobepistd.otf.e3b466
  • from %ProgramFiles(x86)%\adobe\acrobat reader dc\resource\font\courierstd-bold.otf to %ProgramFiles(x86)%\adobe\acrobat reader dc\resource\font\courierstd-bold.otf.e3b466
  • from %ProgramFiles(x86)%\winamp\components\ssdp.w6c to %ProgramFiles(x86)%\winamp\components\ssdp.w6c.e3b466
  • from %ProgramFiles(x86)%\k-lite codec pack\icaros\resources\icarosdescriptions.propdesc to %ProgramFiles(x86)%\k-lite codec pack\icaros\resources\icarosdescriptions.propdesc.e3b466
  • from %ProgramFiles(x86)%\adobe\acrobat reader dc\resource\font\courierstd-boldoblique.otf to %ProgramFiles(x86)%\adobe\acrobat reader dc\resource\font\courierstd-boldoblique.otf.e3b466
  • from %ProgramFiles(x86)%\steam\remoteui\static\playercontrols.js to %ProgramFiles(x86)%\steam\remoteui\static\playercontrols.js.e3b466
  • from %APPDATA%\ghisler\wincmd.ini to %APPDATA%\ghisler\wincmd.ini.e3b466
  • from %ProgramFiles(x86)%\steam\steamapps\libraryfolders.vdf to %ProgramFiles(x86)%\steam\steamapps\libraryfolders.vdf.e3b466
  • from %ProgramFiles(x86)%\steam\config\config.vdf to %ProgramFiles(x86)%\steam\config\config.vdf.e3b466
  • from %ProgramFiles(x86)%\mirc\defaults\urls.ini to %ProgramFiles(x86)%\mirc\defaults\urls.ini.e3b466
  • from %ProgramFiles(x86)%\google\chrome\application\debug.log to %ProgramFiles(x86)%\google\chrome\application\debug.log.e3b466
  • from %ProgramFiles(x86)%\steam\html5app\package.json to %ProgramFiles(x86)%\steam\html5app\package.json.e3b466
  • from %ProgramFiles(x86)%\k-lite codec pack\info\faq.css to %ProgramFiles(x86)%\k-lite codec pack\info\faq.css.e3b466
  • from %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\plug_ins\pddom.api to %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\plug_ins\pddom.api.e3b466
  • from %ProgramFiles(x86)%\steam\config\dialogconfig.vdf to %ProgramFiles(x86)%\steam\config\dialogconfig.vdf.e3b466
  • from %ProgramFiles(x86)%\google\chrome\application\visualelementsmanifest.xml to %ProgramFiles(x86)%\google\chrome\application\visualelementsmanifest.xml.e3b466
  • from %ProgramFiles(x86)%\steam\steam\legacydepotdata.vdf to %ProgramFiles(x86)%\steam\steam\legacydepotdata.vdf.e3b466
  • from %ProgramFiles(x86)%\steam\remoteui\static\headsdown.js to %ProgramFiles(x86)%\steam\remoteui\static\headsdown.js.e3b466
  • from %ProgramFiles(x86)%\steam\remoteui\static\playercontrols.css to %ProgramFiles(x86)%\steam\remoteui\static\playercontrols.css.e3b466
  • from %ProgramFiles(x86)%\mirc\defaults\mirc.ini to %ProgramFiles(x86)%\mirc\defaults\mirc.ini.e3b466
  • from %APPDATA%\mra\installerlang.xml to %APPDATA%\mra\installerlang.xml.e3b466
  • from %APPDATA%\winamp\demo.mp3 to %APPDATA%\winamp\demo.mp3.e3b466
  • from %ProgramFiles(x86)%\steam\thirdpartylegalnotices.css to %ProgramFiles(x86)%\steam\thirdpartylegalnotices.css.e3b466
  • from %ProgramFiles(x86)%\winamp\paths.ini to %ProgramFiles(x86)%\winamp\paths.ini.e3b466
  • from %ProgramFiles(x86)%\opera\launcher.visualelementsmanifest.xml to %ProgramFiles(x86)%\opera\launcher.visualelementsmanifest.xml.e3b466
  • from %ProgramFiles(x86)%\opera\installer_prefs.json to %ProgramFiles(x86)%\opera\installer_prefs.json.e3b466
  • from %ProgramFiles(x86)%\steam\libx264-142.dll.md5 to %ProgramFiles(x86)%\steam\libx264-142.dll.md5.e3b466
  • from %ProgramFiles(x86)%\steam\libav_h264-56.dll.md5 to %ProgramFiles(x86)%\steam\libav_h264-56.dll.md5.e3b466
  • from %ProgramFiles(x86)%\winamp\pconfig.dcf to %ProgramFiles(x86)%\winamp\pconfig.dcf.e3b466
  • from %ProgramFiles(x86)%\k-lite codec pack\icaros\ffmpeg license.txt to %ProgramFiles(x86)%\k-lite codec pack\icaros\ffmpeg license.txt.e3b466
  • from %ProgramFiles(x86)%\winamp\install.ini to %ProgramFiles(x86)%\winamp\install.ini.e3b466
  • from %ProgramFiles(x86)%\k-lite codec pack\icaros\icaros license.txt to %ProgramFiles(x86)%\k-lite codec pack\icaros\icaros license.txt.e3b466
  • from %ProgramFiles(x86)%\opera\resources.pri to %ProgramFiles(x86)%\opera\resources.pri.e3b466
  • from %ProgramFiles(x86)%\opera\server_tracking_data to %ProgramFiles(x86)%\opera\server_tracking_data.e3b466
  • from %ProgramFiles(x86)%\mirc\readme.txt to %ProgramFiles(x86)%\mirc\readme.txt.e3b466
  • from C:\users\all users\microsoft toolkit\settings.xml to C:\users\all users\microsoft toolkit\settings.xml.e3b466
  • from %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\rtc.der to %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\rtc.der.e3b466
  • from %ProgramFiles(x86)%\qip 2012\unins000.msg to %ProgramFiles(x86)%\qip 2012\unins000.msg.e3b466
  • from %ProgramFiles(x86)%\opera\installation_status.xml to %ProgramFiles(x86)%\opera\installation_status.xml.e3b466
  • from %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\agmgpuoptin.ini to %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\agmgpuoptin.ini.e3b466
  • from %ProgramFiles(x86)%\mirc\ircintro.chm to %ProgramFiles(x86)%\mirc\ircintro.chm.e3b466
  • from %ProgramFiles(x86)%\steam\libx264-142.dll.crypt to %ProgramFiles(x86)%\steam\libx264-142.dll.crypt.e3b466
  • from %ProgramFiles(x86)%\winamp\whatsnew.txt to %ProgramFiles(x86)%\winamp\whatsnew.txt.e3b466
  • from %ProgramFiles(x86)%\steam\steam.exe.old to %ProgramFiles(x86)%\steam\steam.exe.old.e3b466
  • from %ProgramFiles(x86)%\mirc\mirc.chm to %ProgramFiles(x86)%\mirc\mirc.chm.e3b466
  • from %ProgramFiles(x86)%\microsoft office\office14\1033\vbaows10.chm to %ProgramFiles(x86)%\microsoft office\office14\1033\vbaows10.chm.e3b466
  • from %ProgramFiles(x86)%\mirc\versions.txt to %ProgramFiles(x86)%\mirc\versions.txt.e3b466
  • from %ProgramFiles(x86)%\qip 2012\unins000.dat to %ProgramFiles(x86)%\qip 2012\unins000.dat.e3b466
  • from %ProgramFiles(x86)%\k-lite codec pack\unins000.dat to %ProgramFiles(x86)%\k-lite codec pack\unins000.dat.e3b466
  • from %ProgramFiles(x86)%\steam\libav_h264-56.dll.crypt to %ProgramFiles(x86)%\steam\libav_h264-56.dll.crypt.e3b466
  • from %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\adobe.reader.dependencies.manifest to %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\adobe.reader.dependencies.manifest.e3b466
  • from %ProgramFiles(x86)%\microsoft office\office10\trigram.lex to %ProgramFiles(x86)%\microsoft office\office10\trigram.lex.e3b466
  • from %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\javascripts\jsbytecodewin.bin to %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\javascripts\jsbytecodewin.bin.e3b466
Modifies user data files (Trojan.Encoder).
Changes user data files extensions (Trojan.Encoder).
Miscellaneous
Creates and executes the following
  • '<SYSTEM32>\vssadmin.exe' delete shadows /all /quiet' (with hidden window)

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.

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

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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.

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