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Trojan.Encoder.33308

Added to the Dr.Web virus database: 2020-12-14

Virus description added:

Technical Information

To ensure autorun and distribution
Creates or modifies the following files
  • %APPDATA%\microsoft\windows\start menu\programs\startup\mystartup.lnk
Malicious functions
To complicate detection of its presence in the operating system,
deletes volume shadow copies.
Executes the following
  • '%WINDIR%\syswow64\net.exe' stop avpsus /y
  • '%WINDIR%\syswow64\net.exe' stop VeeamNFSSvc /y
  • '%WINDIR%\syswow64\net.exe' stop veeam /y
  • '%WINDIR%\syswow64\net.exe' stop PDVFSService /y
  • '%WINDIR%\syswow64\net.exe' stop BackupExecVSSProvider /y
  • '%WINDIR%\syswow64\net.exe' stop BackupExecAgentAccelerator /y
  • '%WINDIR%\syswow64\net.exe' stop BackupExecAgentBrowser /y
  • '%WINDIR%\syswow64\net.exe' stop BackupExecDiveciMediaService /y
  • '%WINDIR%\syswow64\net.exe' stop BackupExecManagementService /y
  • '%WINDIR%\syswow64\taskkill.exe' /IM mydesktopqos.exe /F
  • '%WINDIR%\syswow64\net.exe' stop BackupExecRPCService /y
  • '%WINDIR%\syswow64\net.exe' stop AcrSch2Svc /y
  • '%WINDIR%\syswow64\net.exe' stop AcronisAgent /y
  • '%WINDIR%\syswow64\net.exe' stop CASAD2DWebSvc /y
  • '%WINDIR%\syswow64\net.exe' stop CAARCUpdateSvc /y
  • '%WINDIR%\syswow64\net.exe' stop sophos /y
  • '%WINDIR%\syswow64\taskkill.exe' /IM mspub.exe /F
  • '%WINDIR%\syswow64\net.exe' stop VeeamDeploymentService /y
  • '%WINDIR%\syswow64\net.exe' stop BackupExecJobEngine /y
  • '%WINDIR%\syswow64\net.exe' stop VeeamTransportSvc /y
  • '%WINDIR%\syswow64\net.exe' stop SavRoam /y
  • '%WINDIR%\syswow64\net.exe' stop McAfeeDLPAgentService /y
  • '%WINDIR%\syswow64\net.exe' stop mfewc /y
  • '%WINDIR%\syswow64\net.exe' stop BMR Boot Service /y
  • '%WINDIR%\syswow64\net.exe' stop NetBackup BMR MTFTP Service /y
  • '%WINDIR%\syswow64\net.exe' stop DefWatch /y
  • '%WINDIR%\syswow64\net.exe' stop ccEvtMgr /y
  • '%WINDIR%\syswow64\net.exe' stop ccSetMgr /y
  • '%WINDIR%\syswow64\net.exe' stop RTVscan /y
  • '%WINDIR%\syswow64\net.exe' stop stc_raw_agent /y
  • '%WINDIR%\syswow64\net.exe' stop QBFCService /y
  • '%WINDIR%\syswow64\net.exe' stop QBIDPService /y
  • '%WINDIR%\syswow64\net.exe' stop Intuit.QuickBooks.FCS /y
  • '%WINDIR%\syswow64\net.exe' stop QBCFMonitorService /y
  • '%WINDIR%\syswow64\net.exe' stop YooBackup /y
  • '%WINDIR%\syswow64\net.exe' stop YooIT /y
  • '%WINDIR%\syswow64\net.exe' stop zhudongfangyu /y
  • '%WINDIR%\syswow64\net.exe' stop VSNAPVSS /y
  • '%WINDIR%\syswow64\taskkill.exe' /IM mydesktopservice.exe /F
Reads files which store third party applications passwords
  • %HOMEPATH%\desktop\adhd_and_obesity.docx
  • %HOMEPATH%\desktop\aoc_saq_d_v3_merchant.docx
  • %HOMEPATH%\desktop\applicantform_en.doc
  • %HOMEPATH%\desktop\correct.avi
  • %HOMEPATH%\desktop\delete.avi
  • %HOMEPATH%\desktop\hadac_newsletter_july_2010_final.docx
  • %HOMEPATH%\desktop\holycrosschurchinstructions.docx
  • %HOMEPATH%\desktop\lisp_success.doc
  • %HOMEPATH%\desktop\sdszfo.docx
  • %HOMEPATH%\desktop\uep_form_786_bulletin_1726i602.doc
Modifies file system
Creates the following files
  • %TEMP%\t3xs0tfu.exe
  • C:\far2\plugins\proclist\changelog.locked
  • C:\far2\plugins\network\changelog.locked
  • C:\far2\plugins\macroview\changelog.locked
  • C:\far2\plugins\hlfviewer\changelog.locked
  • C:\far2\plugins\ftp\changelog.locked
  • C:\far2\plugins\ftp\ftpcmds.txt.locked
  • C:\far2\plugins\ftp\ftpcmds_rus.txt.locked
  • C:\far2\plugins\ftp\notes.txt.locked
  • C:\far2\plugins\ftp\notes_rus.txt.locked
  • C:\far2\plugins\filecase\changelog.locked
  • C:\far2\plugins\farcmds\changelog.locked
  • C:\far2\plugins\emenu\changelog.locked
  • C:\far2\plugins\editcase\changelog.locked
  • C:\far2\plugins\drawline\changelog.locked
  • C:\far2\plugins\brackets\changelog.locked
  • C:\far2\documentation\eng\plugins_review.txt.locked
  • C:\far2\plugins\autowrap\changelog.locked
  • C:\far2\plugins\arclite\changelog.locked
  • C:\far2\plugins\align\changelog.locked
  • C:\far2\fexcept\changelog.locked
  • C:\far2\documentation\rus\arc_support.txt.locked
  • C:\far2\documentation\rus\bug_report.txt.locked
  • C:\far2\documentation\rus\far_faq.txt.locked
  • C:\far2\documentation\rus\plugins_install.txt.locked
  • C:\far2\documentation\rus\plugins_review.txt.locked
  • C:\far2\documentation\rus\techinfo.txt.locked
  • C:\far2\documentation\eng\arc_support.txt.locked
  • C:\far2\documentation\eng\bug_report.txt.locked
  • C:\far2\documentation\eng\far_faq.txt.locked
  • C:\far2\documentation\eng\plugins_install.txt.locked
  • C:\far2\plugins\tmppanel\changelog.locked
  • C:\far2\plugins\compare\changelog.locked
  • C:\far2\pluginsdk\headers.pas\pluginw.pas.locked
  • C:\users\public\pictures\sample pictures\hydrangeas.jpg.locked
  • %TEMP%\how_to_decypher_files.txt
  • %TEMP%\tmpb77c.bat
  • %HOMEPATH%\desktop\adhd_and_obesity.docx.locked
  • %HOMEPATH%\desktop\aoc_saq_d_v3_merchant.docx.locked
  • %HOMEPATH%\desktop\applicantform_en.doc.locked
  • %HOMEPATH%\desktop\correct.avi.locked
  • %HOMEPATH%\desktop\delete.avi.locked
  • %HOMEPATH%\desktop\hadac_newsletter_july_2010_final.docx.locked
  • %HOMEPATH%\desktop\holycrosschurchinstructions.docx.locked
  • %HOMEPATH%\desktop\lisp_success.doc.locked
  • %HOMEPATH%\desktop\sdszfo.docx.locked
  • %HOMEPATH%\desktop\uep_form_786_bulletin_1726i602.doc.locked
  • C:\users\public\pictures\sample pictures\chrysanthemum.jpg.locked
  • C:\users\public\pictures\sample pictures\desert.jpg.locked
  • C:\users\public\pictures\sample pictures\jellyfish.jpg.locked
  • C:\far2\pluginsdk\headers.pas\farcolorw.pas.locked
  • C:\users\public\pictures\sample pictures\koala.jpg.locked
  • C:\users\public\pictures\sample pictures\lighthouse.jpg.locked
  • C:\users\public\pictures\sample pictures\penguins.jpg.locked
  • C:\users\public\pictures\sample pictures\tulips.jpg.locked
  • C:\users\public\music\sample music\albumartsmall.jpg.locked
  • C:\users\public\music\sample music\albumart_{5fa05d35-a682-4af6-96f7-0773e42d4d16}_large.jpg.locked
  • C:\users\public\music\sample music\albumart_{5fa05d35-a682-4af6-96f7-0773e42d4d16}_small.jpg.locked
  • C:\users\public\music\sample music\folder.jpg.locked
  • C:\users\public\music\sample music\kalimba.mp3.locked
  • C:\users\public\music\sample music\maid with the flaxen hair.mp3.locked
  • C:\users\public\music\sample music\sleep away.mp3.locked
  • %ALLUSERSPROFILE%\mozilla\logs\maintenanceservice-install.log.locked
  • %ALLUSERSPROFILE%\mozilla\logs\maintenanceservice-uninstall.log.locked
  • C:\far2\changelog.locked
  • C:\far2\pluginsdk\headers.pas\farkeysw.pas.locked
  • C:\far2\documentation\eng\techinfo.txt.locked
Deletes the following files
  • %TEMP%\tmpb77c.bat
Changes user data files extensions (Trojan.Encoder).
Network activity
TCP
HTTP GET requests
  • http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt
  • 'ra#.####ubusercontent.com':443
  • 'google.com':443
  • 'po###admin.com':443
  • UDP
    • DNS ASK google.com
    • DNS ASK ra#.####ubusercontent.com
    • DNS ASK po###admin.com
    • DNS ASK microsoft.com
    Miscellaneous
    Searches for the following windows
    • ClassName: 'TaskManagerWindow' WindowName: 'Administrador de tareas'
    • ClassName: '#32770' WindowName: 'Task Manager'
    • ClassName: '#32770' WindowName: ''
    • ClassName: 'SysListView32' WindowName: 'Processes'
    • ClassName: '' WindowName: ''
    Creates and executes the following
    • '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Set-MpPreference -EnableControlledFolderAccess Disabled' (with hidden window)
    Executes the following
    • '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Set-MpPreference -EnableControlledFolderAccess Disabled
    • '%WINDIR%\syswow64\net1.exe' stop QBCFMonitorService /y
    • '%WINDIR%\syswow64\net1.exe' stop AcrSch2Svc /y
    • '%WINDIR%\syswow64\net1.exe' stop veeam /y
    • '%WINDIR%\syswow64\net1.exe' stop BackupExecVSSProvider /y
    • '%WINDIR%\syswow64\net1.exe' stop BackupExecAgentAccelerator /y
    • '%WINDIR%\syswow64\net1.exe' stop BackupExecAgentBrowser /y
    • '%WINDIR%\syswow64\net1.exe' stop VeeamDeploymentService /y
    • '%WINDIR%\syswow64\net1.exe' stop Intuit.QuickBooks.FCS /y
    • '%WINDIR%\syswow64\net1.exe' stop QBIDPService /y
    • '%WINDIR%\syswow64\net1.exe' stop DefWatch /y
    • '%WINDIR%\syswow64\net1.exe' stop SavRoam /y
    • '%WINDIR%\syswow64\net1.exe' stop YooBackup /y
    • '%WINDIR%\syswow64\net1.exe' stop YooIT /y
    • '%WINDIR%\syswow64\net1.exe' stop ccSetMgr /y
    • '%WINDIR%\syswow64\net1.exe' stop BackupExecManagementService /y
    • '%WINDIR%\syswow64\net1.exe' stop BackupExecDiveciMediaService /y
    • '%WINDIR%\syswow64\net1.exe' stop stc_raw_agent /y
    • '%WINDIR%\syswow64\net1.exe' stop QBFCService /y
    • '%WINDIR%\syswow64\net1.exe' stop zhudongfangyu /y
    • '%WINDIR%\syswow64\net1.exe' stop VSNAPVSS /y
    • '%WINDIR%\syswow64\net1.exe' stop VeeamTransportSvc /y
    • '%WINDIR%\syswow64\net1.exe' stop VeeamNFSSvc /y
    • '%WINDIR%\syswow64\net1.exe' stop CASAD2DWebSvc /y
    • '%WINDIR%\syswow64\net1.exe' stop PDVFSService /y
    • '%WINDIR%\syswow64\net1.exe' stop BMR Boot Service /y
    • '%WINDIR%\syswow64\net1.exe' stop BackupExecJobEngine /y
    • '%WINDIR%\syswow64\net1.exe' stop CAARCUpdateSvc /y
    • '%WINDIR%\syswow64\net1.exe' stop RTVscan /y
    • '%WINDIR%\syswow64\sc.exe' config SQLTELEMETRY$ECWDB2 start= disabled
    • '%WINDIR%\syswow64\sc.exe' config SQLWriter start= disabled
    • '%WINDIR%\syswow64\sc.exe' config SstpSvc start= disabled
    • '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=c: /on=c: /maxsize=401MB
    • '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=c: /on=c: /maxsize=unbounded
    • '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=d: /on=d: /maxsize=401MB
    • '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=d: /on=d: /maxsize=unbounded
    • '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=e: /on=e: /maxsize=401MB
    • '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=e: /on=e: /maxsize=unbounded
    • '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=f: /on=f: /maxsize=401MB
    • '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=f: /on=f: /maxsize=unbounded
    • '%WINDIR%\syswow64\sc.exe' config SQLTELEMETRY start= disabled
    • '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=g: /on=g: /maxsize=401MB
    • '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=h: /on=h: /maxsize=401MB
    • '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=h: /on=h: /maxsize=unbounded
    • '%WINDIR%\syswow64\cmd.exe' /c rd /s /q %SYSTEMDRIVE%\$Recycle.bin
    • '%WINDIR%\syswow64\net1.exe' stop avpsus /y
    • '%WINDIR%\syswow64\net1.exe' stop McAfeeDLPAgentService /y
    • '%WINDIR%\syswow64\net1.exe' stop ccEvtMgr /y
    • '%WINDIR%\syswow64\net1.exe' stop mfewc /y
    • '<SYSTEM32>\vssvc.exe'
    • '%WINDIR%\syswow64\net1.exe' stop NetBackup BMR MTFTP Service /y
    • '%WINDIR%\syswow64\net1.exe' stop AcronisAgent /y
    • '%WINDIR%\syswow64\net1.exe' stop sophos /y
    • '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=g: /on=g: /maxsize=unbounded
    • '%WINDIR%\syswow64\net1.exe' stop BackupExecRPCService /y
    • '%WINDIR%\syswow64\cmd.exe' /C %TEMP%\tmpB77C.bat

    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.
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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.

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