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Trojan.Encoder.42209

Added to the Dr.Web virus database: 2025-05-20

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'MyClone' = '%APPDATA%\<File name>.exe'
Creates or modifies the following files
  • %APPDATA%\microsoft\windows\start menu\programs\startup\<File name>.exe
Malicious functions
Reads files which store third party applications passwords
  • %LOCALAPPDATA%\google\chrome\user data\default\cookies
  • %HOMEPATH%\desktop\tree_view.htm
  • %HOMEPATH%\desktop\split.avi
  • %HOMEPATH%\desktop\sdksampleunprivdeveloper.cer
  • %HOMEPATH%\desktop\pmd.cer
  • %HOMEPATH%\desktop\ituneshelpunavailable.htm
  • %HOMEPATH%\desktop\hadac_newsletter_july_2010_final.docx
  • %HOMEPATH%\desktop\dialmap.bmp
  • %HOMEPATH%\desktop\tree_view.html
  • %HOMEPATH%\desktop\dial.bmp
  • %HOMEPATH%\desktop\correct.avi
  • %HOMEPATH%\desktop\contoso.cer
  • %HOMEPATH%\desktop\archer.avi
  • %HOMEPATH%\desktop\applicantform_en.doc
  • %HOMEPATH%\desktop\aoc_saq_d_v3_merchant.docx
  • %HOMEPATH%\desktop\alert.html
  • %HOMEPATH%\desktop\adhd_and_obesity.docx
  • %HOMEPATH%\desktop\dashborder_120.bmp
  • %HOMEPATH%\desktop\trivial-merge.html
Modifies file system
Creates the following files
  • %APPDATA%\<File name>.exe
  • %LOCALAPPDATA%\microsoft\internet explorer\brndlog.txt.enc
  • %LOCALAPPDATA%\google\chrome\user data\safe browsing cookies-journal.enc
  • %LOCALAPPDATA%\google\chrome\user data\safe browsing cookies.enc
  • %LOCALAPPDATA%\google\chrome\user data\default\extensions\pjkljhegncpnkpknbcohdijeoejaedia\7_0\128.png.enc
  • %LOCALAPPDATA%\google\chrome\user data\default\extensions\coobgpohoikkiipiblmjeljniedjpjpf\0.0.0.19_0\48.png.enc
  • %LOCALAPPDATA%\google\chrome\user data\default\extensions\coobgpohoikkiipiblmjeljniedjpjpf\0.0.0.19_0\32.png.enc
  • %LOCALAPPDATA%\google\chrome\user data\default\extensions\coobgpohoikkiipiblmjeljniedjpjpf\0.0.0.19_0\16.png.enc
  • %LOCALAPPDATA%\google\chrome\user data\default\extensions\coobgpohoikkiipiblmjeljniedjpjpf\0.0.0.19_0\128.png.enc
  • %LOCALAPPDATA%\google\chrome\user data\default\extensions\blpcfgokakmgnkcojhhkbfbldkacnbeo\4.2.5_0\128.png.enc
  • %LOCALAPPDATA%\google\chrome\user data\default\extensions\aohghmighlieiainnegkcijnfilokake\0.0.0.6_0\main.html.enc
  • %LOCALAPPDATA%\microsoft\windows mail\oeold.xml.enc
  • %LOCALAPPDATA%\google\chrome\user data\default\extensions\aohghmighlieiainnegkcijnfilokake\0.0.0.6_0\icon_16.png.enc
  • %LOCALAPPDATA%\google\chrome\user data\default\extensions\aohghmighlieiainnegkcijnfilokake\0.0.0.6_0\icon_128.png.enc
  • %LOCALAPPDATA%\google\chrome\user data\default\cookies-journal.enc
  • %LOCALAPPDATA%\google\chrome\user data\default\cookies.enc
  • %LOCALAPPDATA%\google\chrome\application\visualelementsmanifest.xml.enc
  • %LOCALAPPDATA%\google\chrome\application\42.0.2311.135\visualelements\splash-620x300.png.enc
  • %LOCALAPPDATA%\google\chrome\application\42.0.2311.135\visualelements\smalllogo.png.enc
  • %LOCALAPPDATA%\google\chrome\application\42.0.2311.135\visualelements\logo.png.enc
  • %LOCALAPPDATA%\google\chrome\user data\default\extensions\apdfllckaahabafndbhieahigkjlhalf\6.2_0\128.png.enc
  • C:\users\public\pictures\sample pictures\chrysanthemum.jpg.enc
  • %LOCALAPPDATA%\microsoft\windows mail\stationery\desktop.ini.enc
  • %HOMEPATH%\downloads\desktop.ini.enc
  • %HOMEPATH%\documents\desktop.ini.enc
  • %HOMEPATH%\desktop\wrar520.exe.enc
  • %HOMEPATH%\desktop\winmine.exe.enc
  • %HOMEPATH%\desktop\telegram.lnk.enc
  • %HOMEPATH%\desktop\tcm851ax32.exe.enc
  • %HOMEPATH%\desktop\notepad.exe.enc
  • %HOMEPATH%\desktop\google chrome.lnk.enc
  • %HOMEPATH%\desktop\dotnetfx45_full_setup.exe.enc
  • %LOCALAPPDATA%\google\chrome\application\42.0.2311.135\secondarytile.png.enc
  • %LOCALAPPDATA%\microsoft\windows\wer\reportqueue\critical_microsoft .net f_5deabd23d637fc27acf7bfdd613025667396c824_cab_0a8d2661\microsoft .net framework 4.8 setup_20240811_152236591.html.enc
  • %APPDATA%\thunderbird\profiles\rehh7ft5.default-release\pkcs11.txt.enc
  • %APPDATA%\mozilla\firefox\profiles\apc2n9d1.default-release\sitesecurityservicestate.txt.enc
  • %APPDATA%\mozilla\firefox\profiles\apc2n9d1.default-release\pkcs11.txt.enc
  • %APPDATA%\microsoft\windows\start menu\programs\maintenance\desktop.ini.enc
  • %APPDATA%\microsoft\windows\start menu\programs\accessories\system tools\desktop.ini.enc
  • %APPDATA%\microsoft\windows\start menu\programs\accessories\desktop.ini.enc
  • %APPDATA%\microsoft\windows\start menu\programs\accessories\accessibility\desktop.ini.enc
  • %APPDATA%\microsoft\windows\sendto\desktop.ini.enc
  • %APPDATA%\microsoft\windows\sendto\desktop (create shortcut).desklink.enc
  • %HOMEPATH%\desktop\chromesetup.exe.enc
  • %APPDATA%\microsoft\windows\libraries\documents.library-ms.enc
  • %LOCALAPPDATA%\google\chrome\application\42.0.2311.135\installer\chrome.7z.enc
  • %ALLUSERSPROFILE%\sun\java\java update\jaureglist.xml.enc
  • %ALLUSERSPROFILE%\microsoft\windows nt\msscan\welcomescan.jpg.enc
  • C:\users\default\appdata\roaming\microsoft\windows\sendto\desktop.ini.enc
  • %ALLUSERSPROFILE%\microsoft\device stage\device\{113527a4-45d4-4b6f-b567-97838f1b04b0}\superbar.png.enc
  • %ALLUSERSPROFILE%\microsoft\device stage\device\{113527a4-45d4-4b6f-b567-97838f1b04b0}\overlay.png.enc
  • C:\users\default\appdata\roaming\microsoft\windows\start menu\programs\maintenance\desktop.ini.enc
  • %ALLUSERSPROFILE%\microsoft\device stage\device\{113527a4-45d4-4b6f-b567-97838f1b04b0}\device.png.enc
  • %ALLUSERSPROFILE%\microsoft\device stage\device\{113527a4-45d4-4b6f-b567-97838f1b04b0}\behavior.xml.enc
  • %ALLUSERSPROFILE%\microsoft\device stage\device\{113527a4-45d4-4b6f-b567-97838f1b04b0}\background.png.enc
  • C:\users\default\appdata\roaming\microsoft\windows\start menu\programs\accessories\system tools\desktop.ini.enc
  • C:\users\default\appdata\roaming\microsoft\windows\start menu\programs\accessories\desktop.ini.enc
  • %HOMEPATH%\links\desktop.lnk.enc
  • %ALLUSERSPROFILE%\microsoft\device stage\device\{8702d817-5aad-4674-9ef3-4d3decd87120}\behavior.xml.enc
  • C:\users\default\appdata\roaming\microsoft\windows\sendto\desktop (create shortcut).desklink.enc
  • C:\users\public\downloads\desktop.ini.enc
  • C:\users\public\documents\desktop.ini.enc
  • C:\users\public\desktop\steam.lnk.enc
  • C:\users\public\desktop\opera.lnk.enc
  • C:\users\public\desktop\mozilla thunderbird.lnk.enc
  • C:\users\public\desktop\firefox.lnk.enc
  • C:\users\public\desktop\desktop.ini.enc
  • C:\users\public\desktop\acrobat reader dc.lnk.enc
  • C:\users\default\appdata\roaming\microsoft\windows\start menu\programs\accessories\accessibility\desktop.ini.enc
  • %HOMEPATH%\desktop\desktop.ini.enc
  • %ALLUSERSPROFILE%\microsoft\device stage\device\{8702d817-5aad-4674-9ef3-4d3decd87120}\watermark.png.enc
  • %ALLUSERSPROFILE%\microsoft\device stage\task\{07deb856-fc6e-4fb9-8add-d8f2cf8722c9}\tasks.xml.enc
  • %ALLUSERSPROFILE%\microsoft\device stage\task\{07deb856-fc6e-4fb9-8add-d8f2cf8722c9}\en-us\resource.xml.enc
  • C:\users\public\pictures\sample pictures\tulips.jpg.enc
  • %ALLUSERSPROFILE%\microsoft\windows\wer\reportqueue\noncritical_x64_528c94ccf5464e2e06249b41105333fcda5052_cab_05e13dfe\dmi3ddf.tmp.log.xml.enc
  • C:\users\public\pictures\sample pictures\penguins.jpg.enc
  • C:\users\public\pictures\sample pictures\lighthouse.jpg.enc
  • C:\users\public\pictures\sample pictures\koala.jpg.enc
  • C:\users\public\pictures\sample pictures\jellyfish.jpg.enc
  • %ALLUSERSPROFILE%\microsoft\windows\start menu\programs\maintenance\desktop.ini.enc
  • C:\users\public\pictures\sample pictures\hydrangeas.jpg.enc
  • %ALLUSERSPROFILE%\microsoft\device stage\task\{07deb856-fc6e-4fb9-8add-d8f2cf8722c9}\resource.xml.enc
  • C:\users\public\pictures\sample pictures\desert.jpg.enc
  • %ALLUSERSPROFILE%\microsoft\device stage\device\{8702d817-5aad-4674-9ef3-4d3decd87120}\background.png.enc
  • %ALLUSERSPROFILE%\microsoft\windows\start menu\programs\accessories\system tools\desktop.ini.enc
  • C:\users\public\music\sample music\sleep away.mp3.enc
  • %ALLUSERSPROFILE%\microsoft\windows\start menu\programs\accessories\desktop.ini.enc
  • %ALLUSERSPROFILE%\microsoft\windows\start menu\programs\accessories\accessibility\desktop.ini.enc
  • C:\users\public\music\sample music\maid with the flaxen hair.mp3.enc
  • C:\users\public\music\sample music\kalimba.mp3.enc
  • %ALLUSERSPROFILE%\microsoft\device stage\task\{e35be42d-f742-4d96-a50a-1775fb1a7a42}\tasks.xml.enc
  • %ALLUSERSPROFILE%\microsoft\device stage\task\{e35be42d-f742-4d96-a50a-1775fb1a7a42}\en-us\resource.xml.enc
  • %ALLUSERSPROFILE%\microsoft\windows\start menu\programs\accessories\tablet pc\desktop.ini.enc
  • %HOMEPATH%\links\downloads.lnk.enc
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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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