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Profil

Trojan.Encoder.34027

Added to the Dr.Web virus database: 2021-06-16

Virus description added:

Technical Information

To ensure autorun and distribution
Creates the following files on removable media
  • <Drive name for removable media>:\how to decrypt files.txt
  • <Drive name for removable media>:\toolbar.bmp
  • <Drive name for removable media>:\dashborder_192.bmp
  • <Drive name for removable media>:\coffee.bmp
  • <Drive name for removable media>:\sdkfailsafeemulator.cer
  • <Drive name for removable media>:\correct.avi
  • <Drive name for removable media>:\sdksampleunprivdeveloper.cer
  • <Drive name for removable media>:\join.avi
  • <Drive name for removable media>:\sdksampleprivdeveloper.cer
  • <Drive name for removable media>:\split.avi
  • <Drive name for removable media>:\contosoroot_1.cer
  • <Drive name for removable media>:\pmd.cer
  • <Drive name for removable media>:\testcertificate.cer
  • <Drive name for removable media>:\hanni_umami_chapter.doc
  • <Drive name for removable media>:\ovp25012015.doc
  • <Drive name for removable media>:\lisp_success.doc
Malicious functions
To complicate detection of its presence in the operating system,
blocks the following features:
  • System Restore (SR)
deletes volume shadow copies.
Modifies file system
Creates the following files
  • %ProgramFiles%\how to decrypt files.txt
  • C:\users\default\downloads\how to decrypt files.txt
  • C:\users\default\desktop\how to decrypt files.txt
  • C:\users\default\documents\how to decrypt files.txt
  • C:\users\default\how to decrypt files.txt
  • %HOMEPATH%\desktop\how to decrypt files.txt
  • D:\how to decrypt files.txt
  • C:\users\default\favorites\how to decrypt files.txt
  • D:\$recycle.bin\how to decrypt files.txt
  • %HOMEPATH%\links\how to decrypt files.txt
  • %HOMEPATH%\documents\how to decrypt files.txt
  • %HOMEPATH%\favorites\how to decrypt files.txt
  • D:\$recycle.bin\s-1-5-21-1960123792-2022915161-3775307078-1001\how to decrypt files.txt
  • %HOMEPATH%\music\how to decrypt files.txt
  • %HOMEPATH%\pictures\how to decrypt files.txt
  • %HOMEPATH%\downloads\how to decrypt files.txt
  • C:\users\public\favorites\how to decrypt files.txt
  • C:\users\public\videos\how to decrypt files.txt
  • C:\users\default\pictures\how to decrypt files.txt
  • C:\users\public\pictures\sample pictures\how to decrypt files.txt
  • C:\users\public\music\sample music\how to decrypt files.txt
  • C:\users\public\recorded tv\sample media\how to decrypt files.txt
  • C:\users\public\recorded tv\how to decrypt files.txt
  • C:\users\public\libraries\how to decrypt files.txt
  • C:\users\public\music\how to decrypt files.txt
  • %HOMEPATH%\saved games\how to decrypt files.txt
  • C:\users\public\pictures\how to decrypt files.txt
  • C:\users\public\downloads\how to decrypt files.txt
  • C:\users\public\documents\how to decrypt files.txt
  • C:\users\public\desktop\how to decrypt files.txt
  • C:\users\default\videos\how to decrypt files.txt
  • C:\users\default\saved games\how to decrypt files.txt
  • C:\users\public\how to decrypt files.txt
  • C:\users\default\links\how to decrypt files.txt
  • C:\users\default\music\how to decrypt files.txt
  • %HOMEPATH%\videos\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\push\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\performance\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\oldage\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\layeredtitles\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\memories\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\huecycle\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\babygirl\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\pets\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\full\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\babyboy\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\en-us\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\how to decrypt files.txt
  • C:\$recycle.bin\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\flippage\how to decrypt files.txt
  • %ProgramFiles%\msbuild\how to decrypt files.txt
  • C:\users\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\resizingpanels\how to decrypt files.txt
  • %ProgramFiles(x86)%\uninstall information\how to decrypt files.txt
  • %ProgramFiles(x86)%\msbuild\microsoft\how to decrypt files.txt
  • %ProgramFiles(x86)%\msbuild\how to decrypt files.txt
  • %ProgramFiles%\uninstall information\how to decrypt files.txt
  • %ProgramFiles(x86)%\how to decrypt files.txt
  • %ProgramFiles%\msbuild\microsoft\how to decrypt files.txt
  • %HOMEPATH%\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\vignette\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\travel\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\videowall\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\stacking\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\sports\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\specialoccasion\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\shatter\how to decrypt files.txt
  • %ProgramFiles%\dvd maker\shared\dvdstyles\rectangles\how to decrypt files.txt
  • C:\users\public\videos\sample videos\how to decrypt files.txt
Modifies the following files
  • <Drive name for removable media>:\correct.avi
  • <Drive name for removable media>:\join.avi
  • <Drive name for removable media>:\split.avi
  • <Drive name for removable media>:\toolbar.bmp
  • <Drive name for removable media>:\dashborder_192.bmp
  • <Drive name for removable media>:\coffee.bmp
  • <Drive name for removable media>:\sdkfailsafeemulator.cer
  • <Drive name for removable media>:\sdksampleunprivdeveloper.cer
  • <Drive name for removable media>:\sdksampleprivdeveloper.cer
  • <Drive name for removable media>:\contosoroot_1.cer
  • <Drive name for removable media>:\pmd.cer
  • <Drive name for removable media>:\testcertificate.cer
  • <Drive name for removable media>:\hanni_umami_chapter.doc
  • <Drive name for removable media>:\lisp_success.doc
  • <Drive name for removable media>:\508softwareandos.doc
  • <Drive name for removable media>:\ovp25012015.doc
Creates ransom message files (Trojan.Encoder).
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)
  • '<SYSTEM32>\cmd.exe' /c bcdedit /set {current} bootstatuspolicy ignoreallfailures' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c bcdedit /set {current} recoveryenabled no' (with hidden window)
Executes the following
  • '<SYSTEM32>\cmd.exe' /c bcdedit /set {current} bootstatuspolicy ignoreallfailures
  • '<SYSTEM32>\cmd.exe' /c bcdedit /set {current} recoveryenabled no
  • '<SYSTEM32>\bcdedit.exe' /set {current} bootstatuspolicy ignoreallfailures

Recommandations pour le traitement

  1. Si le système d'exploitation peut être démarré (en mode normal ou en mode sans échec), téléchargez Dr.Web Security Space et lancez un scan complet de votre ordinateur et de tous les supports amovibles que vous utilisez. En savoir plus sur Dr.Web Security Space.
  2. Si le démarrage du système d'exploitation est impossible, veuillez modifier les paramètres du BIOS de votre ordinateur pour démarrer votre ordinateur via CD/DVD ou clé USB. Téléchargez l'image du disque de secours de restauration du système Dr.Web® LiveDisk ou l'utilitaire pour enregistrer Dr.Web® LiveDisk sur une clé USB, puis préparez la clé USB appropriée. Démarrez l'ordinateur à l'aide de cette clé et lancez le scan complet et le traitement des menaces détectées.

Veuillez lancer le scan complet du système à l'aide de Dr.Web Antivirus pour Mac OS.

Veuillez lancer le scan complet de toutes les partitions du disque à l'aide de Dr.Web Antivirus pour Linux.

  1. Si votre appareil mobile fonctionne correctement, veuillez télécharger et installer sur votre appareil mobile Dr.Web pour Android. Lancez un scan complet et suivez les recommandations sur la neutralisation des menaces détectées.
  2. Si l'appareil mobile est bloqué par le Trojan de la famille Android.Locker (un message sur la violation grave de la loi ou la demande d'une rançon est affiché sur l'écran de l'appareil mobile), procédez comme suit:
    • démarrez votre Smartphone ou votre tablette en mode sans échec (si vous ne savez pas comment faire, consultez la documentation de l'appareil mobile ou contactez le fabricant) ;
    • puis téléchargez et installez sur votre appareil mobile Dr.Web pour Android et lancez un scan complet puis suivez les recommandations sur la neutralisation des menaces détectées ;
    • Débranchez votre appareil et rebranchez-le.

En savoir plus sur Dr.Web pour Android