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Trojan.Encoder.32281

Added to the Dr.Web virus database: 2020-08-03

Virus description added:

Technical Information

To ensure autorun and distribution
Creates the following files on removable media
  • <Drive name for removable media>:\000814251_video_01.avi
  • <Drive name for removable media>:\fi51.doc
  • <Drive name for removable media>:\archer.avi
  • <Drive name for removable media>:\february_catalogue__2015.doc
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\applicantform_en.doc
  • %HOMEPATH%\desktop\archer.avi
  • %HOMEPATH%\desktop\coffee.bmp
  • %HOMEPATH%\desktop\contoso_1.cer
  • %HOMEPATH%\desktop\dashborder_144.bmp
  • %HOMEPATH%\desktop\dashborder_192.bmp
  • %HOMEPATH%\desktop\dialmap.bmp
  • %HOMEPATH%\desktop\file_p_00000000_1371597592.docx
  • %HOMEPATH%\desktop\hadac_newsletter_july_2010_final.docx
  • %HOMEPATH%\desktop\hanni_umami_chapter.doc
  • %HOMEPATH%\desktop\sdksampleprivdeveloper.cer
  • %HOMEPATH%\desktop\tileimage.bmp
  • %HOMEPATH%\desktop\weeklysheet1215.doc
  • %APPDATA%\thunderbird\profiles.ini
Modifies file system
Creates the following files
  • C:\far2\281a1b-readme.txt
  • %HOMEPATH%\favorites\windows live\281a1b-readme.txt
  • C:\far2\documentation\rus\281a1b-readme.txt
  • %ProgramFiles(x86)%\qip 2012\281a1b-readme.txt
  • %ProgramFiles(x86)%\microsoft office\office10\281a1b-readme.txt
  • %ProgramFiles(x86)%\mirc\281a1b-readme.txt
  • %HOMEPATH%\favorites\microsoft websites\281a1b-readme.txt
  • %HOMEPATH%\searches\281a1b-readme.txt
  • %ProgramFiles(x86)%\adobe\acrobat reader dc\281a1b-readme.txt
  • %HOMEPATH%\favorites\msn websites\281a1b-readme.txt
  • %ProgramFiles(x86)%\microsoft office\office14\1033\281a1b-readme.txt
  • C:\far2\addons\281a1b-readme.txt
  • C:\far2\fexcept\281a1b-readme.txt
  • %ProgramFiles(x86)%\winamp\microsoft.vc90.crt\281a1b-readme.txt
  • %ProgramFiles(x86)%\mirc\defaults\281a1b-readme.txt
  • %ProgramFiles(x86)%\adobe\acrobat reader dc\resource\281a1b-readme.txt
  • %CommonProgramFiles(x86)%\java\java update\281a1b-readme.txt
  • C:\users\public\music\sample music\281a1b-readme.txt
  • C:\users\public\pictures\sample pictures\281a1b-readme.txt
  • C:\far2\documentation\eng\281a1b-readme.txt
  • C:\users\all users\281a1b-readme.txt
  • C:\users\all users\ntuser.pol
  • %PROGRAMDATA%\microsoft toolkit\281a1b-readme.txt
  • %HOMEPATH%\favorites\links\281a1b-readme.txt
  • %ProgramFiles(x86)%\msbuild\281a1b-readme.txt
  • %HOMEPATH%\desktop\281a1b-readme.txt
  • C:\users\public\libraries\281a1b-readme.txt
  • %HOMEPATH%\contacts\281a1b-readme.txt
  • %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\281a1b-readme.txt
  • C:\users\public\recorded tv\sample media\281a1b-readme.txt
  • C:\users\public\videos\sample videos\281a1b-readme.txt
  • D:\281a1b-readme.txt
  • %ProgramFiles(x86)%\winamp\281a1b-readme.txt
  • %ProgramFiles(x86)%\opera\281a1b-readme.txt
Moves the following files
  • from %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\agmgpuoptin.ini to %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\agmgpuoptin.ini.281a1b
  • from %ProgramFiles(x86)%\steam\libav_h264-56.dll.crypt to %ProgramFiles(x86)%\steam\libav_h264-56.dll.crypt.281a1b
  • from %ProgramFiles(x86)%\steam\libx264-142.dll.crypt to %ProgramFiles(x86)%\steam\libx264-142.dll.crypt.281a1b
  • from %APPDATA%\telegram desktop\log.txt to %APPDATA%\telegram desktop\log.txt.281a1b
  • from %APPDATA%\telegram desktop\unins000.dat to %APPDATA%\telegram desktop\unins000.dat.281a1b
  • from %APPDATA%\winamp\links.xml to %APPDATA%\winamp\links.xml.281a1b
  • from %APPDATA%\winamp\demo.mp3 to %APPDATA%\winamp\demo.mp3.281a1b
  • from %ProgramFiles(x86)%\microsoft office\office10\trigram.lex to %ProgramFiles(x86)%\microsoft office\office10\trigram.lex.281a1b
  • from %APPDATA%\ghisler\wincmd.ini to %APPDATA%\ghisler\wincmd.ini.281a1b
  • from %ProgramFiles(x86)%\mirc\defaults\urls.ini to %ProgramFiles(x86)%\mirc\defaults\urls.ini.281a1b
  • from %ProgramFiles(x86)%\mirc\defaults\servers.ini to %ProgramFiles(x86)%\mirc\defaults\servers.ini.281a1b
  • from %ProgramFiles(x86)%\pidgin\gtk\manifest\pango_1.29.4-1daa_win32.mft to %ProgramFiles(x86)%\pidgin\gtk\manifest\pango_1.29.4-1daa_win32.mft.281a1b
  • from %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\javascripts\jsbytecodewin.bin to %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\javascripts\jsbytecodewin.bin.281a1b
  • from %ProgramFiles(x86)%\qip 2012\smilies\qip smilies\aa.gif to %ProgramFiles(x86)%\qip 2012\smilies\qip smilies\aa.gif.281a1b
  • from %APPDATA%\mra\base\opt.dbs to %APPDATA%\mra\base\opt.dbs.281a1b
  • from %APPDATA%\mra\base\mra.dbs to %APPDATA%\mra\base\mra.dbs.281a1b
  • from %ProgramFiles(x86)%\k-lite codec pack\tools\codectweaktool-1.bin to %ProgramFiles(x86)%\k-lite codec pack\tools\codectweaktool-1.bin.281a1b
  • from %ProgramFiles(x86)%\steam\steam.exe.old to %ProgramFiles(x86)%\steam\steam.exe.old.281a1b
  • from %ProgramFiles(x86)%\pidgin\sounds\purple\logout.wav to %ProgramFiles(x86)%\pidgin\sounds\purple\logout.wav.281a1b
  • from %ProgramFiles(x86)%\pidgin\sounds\purple\send.wav to %ProgramFiles(x86)%\pidgin\sounds\purple\send.wav.281a1b
  • from %ProgramFiles(x86)%\pidgin\sounds\purple\receive.wav to %ProgramFiles(x86)%\pidgin\sounds\purple\receive.wav.281a1b
  • from %ProgramFiles(x86)%\pidgin\sounds\purple\login.wav to %ProgramFiles(x86)%\pidgin\sounds\purple\login.wav.281a1b
  • from %ProgramFiles(x86)%\pidgin\gtk\manifest\atk_1.32.0-2_win32.mft to %ProgramFiles(x86)%\pidgin\gtk\manifest\atk_1.32.0-2_win32.mft.281a1b
  • from %APPDATA%\icq-profile\installerlang.xml to %APPDATA%\icq-profile\installerlang.xml.281a1b
  • from %ProgramFiles(x86)%\qip 2012\smilies\qip smilies\eb.gif to %ProgramFiles(x86)%\qip 2012\smilies\qip smilies\eb.gif.281a1b
  • from %ProgramFiles(x86)%\winamp\components\ssdp.w6c to %ProgramFiles(x86)%\winamp\components\ssdp.w6c.281a1b
  • from %ProgramFiles(x86)%\pidgin\gtk\manifest\zlib_1.2.5-2_win32.mft to %ProgramFiles(x86)%\pidgin\gtk\manifest\zlib_1.2.5-2_win32.mft.281a1b
  • from %ProgramFiles(x86)%\pidgin\gtk\manifest\cairo_1.8.10-1_win32.mft to %ProgramFiles(x86)%\pidgin\gtk\manifest\cairo_1.8.10-1_win32.mft.281a1b
  • from %ProgramFiles(x86)%\pidgin\gtk\contents to %ProgramFiles(x86)%\pidgin\gtk\contents.281a1b
  • from %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\adobe.reader.dependencies.manifest to %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\adobe.reader.dependencies.manifest.281a1b
  • from %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\cryptocme.sig to %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\cryptocme.sig.281a1b
  • from %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\rtc.der to %ProgramFiles(x86)%\adobe\acrobat reader dc\reader\rtc.der.281a1b
  • from %ProgramFiles(x86)%\winamp\paths.ini to %ProgramFiles(x86)%\winamp\paths.ini.281a1b
  • from %ProgramFiles(x86)%\opera\installer_prefs.json to %ProgramFiles(x86)%\opera\installer_prefs.json.281a1b
  • from %ProgramFiles(x86)%\winamp\install.ini to %ProgramFiles(x86)%\winamp\install.ini.281a1b
  • from %ProgramFiles(x86)%\winamp\pconfig.dcf to %ProgramFiles(x86)%\winamp\pconfig.dcf.281a1b
  • from %ProgramFiles(x86)%\opera\resources.pri to %ProgramFiles(x86)%\opera\resources.pri.281a1b
  • from %ProgramFiles(x86)%\opera\launcher.visualelementsmanifest.xml to %ProgramFiles(x86)%\opera\launcher.visualelementsmanifest.xml.281a1b
  • from %ProgramFiles(x86)%\mirc\readme.txt to %ProgramFiles(x86)%\mirc\readme.txt.281a1b
  • from %ProgramFiles(x86)%\mirc\ircintro.chm to %ProgramFiles(x86)%\mirc\ircintro.chm.281a1b
  • from C:\users\all users\ntuser.pol to C:\users\all users\ntuser.pol.281a1b
  • from %ProgramFiles(x86)%\mirc\versions.txt to %ProgramFiles(x86)%\mirc\versions.txt.281a1b
  • from %ProgramFiles(x86)%\opera\server_tracking_data to %ProgramFiles(x86)%\opera\server_tracking_data.281a1b
  • from %ProgramFiles(x86)%\opera\installation_status.xml to %ProgramFiles(x86)%\opera\installation_status.xml.281a1b
  • from %ProgramFiles(x86)%\msbuild\microsoft.office.infopath.targets to %ProgramFiles(x86)%\msbuild\microsoft.office.infopath.targets.281a1b
  • from %ProgramFiles(x86)%\winamp\microsoft.vc90.crt\microsoft.vc90.crt.manifest to %ProgramFiles(x86)%\winamp\microsoft.vc90.crt\microsoft.vc90.crt.manifest.281a1b
  • from %ProgramFiles(x86)%\mirc\defaults\mirc.ini to %ProgramFiles(x86)%\mirc\defaults\mirc.ini.281a1b
  • from %ProgramFiles(x86)%\microsoft office\office10\thdic.lex to %ProgramFiles(x86)%\microsoft office\office10\thdic.lex.281a1b
  • from %ProgramFiles(x86)%\microsoft office\office14\1033\vbaows10.chm to %ProgramFiles(x86)%\microsoft office\office14\1033\vbaows10.chm.281a1b
  • from %ProgramFiles(x86)%\qip 2012\unins000.dat to %ProgramFiles(x86)%\qip 2012\unins000.dat.281a1b
  • from %ProgramFiles(x86)%\winamp\whatsnew.txt to %ProgramFiles(x86)%\winamp\whatsnew.txt.281a1b
  • from %ProgramFiles(x86)%\mirc\mirc.chm to %ProgramFiles(x86)%\mirc\mirc.chm.281a1b
  • from %ProgramFiles(x86)%\k-lite codec pack\tools\codectweaktool-0.bin to %ProgramFiles(x86)%\k-lite codec pack\tools\codectweaktool-0.bin.281a1b
  • from %ProgramFiles(x86)%\qip 2012\unins000.msg to %ProgramFiles(x86)%\qip 2012\unins000.msg.281a1b
  • from %ProgramFiles(x86)%\pidgin\plugins\.dll to %ProgramFiles(x86)%\pidgin\plugins\.dll.281a1b
  • from %ProgramFiles(x86)%\k-lite codec pack\icaros\resources\icarosdescriptions.propdesc to %ProgramFiles(x86)%\k-lite codec pack\icaros\resources\icarosdescriptions.propdesc.281a1b
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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Download by serial number

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.

Find out more about Dr.Web for Android