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Trojan.Encoder.31784

Added to the Dr.Web virus database: 2020-05-11

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '1' = '"%TEMP%\9EA3.tmp.exe"'
Creates or modifies the following files
  • <SYSTEM32>\tasks\nvngxupdatecheckdaily_{081131b0-31b0-31b0-31b0-081131b031b0}
Creates the following files on removable media
  • <Drive name for removable media>:\correct.avi
  • <Drive name for removable media>:\default.bmp
  • <Drive name for removable media>:\coffee.bmp
  • <Drive name for removable media>:\dashborder_96.bmp
  • <Drive name for removable media>:\dashborder_144.bmp
  • <Drive name for removable media>:\contoso.cer
Malicious functions
To complicate detection of its presence in the operating system,
deletes volume shadow copies.
Terminates or attempts to terminate
the following system processes:
  • <SYSTEM32>\dwm.exe
  • <SYSTEM32>\taskhost.exe
the following user processes:
  • iexplore.exe
Modifies file system
Creates the following files
  • %TEMP%\ae7f.tmp
  • C:\far2\documentation\rus\readme-warning.txt
  • C:\far2\documentation\eng\readme-warning.txt
  • C:\far2\addons\readme-warning.txt
  • C:\far2\addons\xlat\readme-warning.txt
  • C:\far2\addons\xlat\russian\readme-warning.txt
  • C:\far2\addons\shell\readme-warning.txt
  • C:\far2\addons\setup\readme-warning.txt
  • C:\far2\addons\macros\readme-warning.txt
  • C:\far2\addons\colors\readme-warning.txt
  • C:\far2\addons\colors\default_highlighting\readme-warning.txt
  • C:\far2\addons\colors\custom_highlighting\readme-warning.txt
  • D:\readme-warning.txt
  • %TEMP%\readme-warning.txt
  • %TEMP%\webinstaller\qnzuposrqouvfisa\readme-warning.txt
  • %TEMP%\temp1_fp_13.0.0.182_archive.zip\fp_13.0.0.182_archive\13_0_r0_182\readme-warning.txt
  • %TEMP%\opera installer\readme-warning.txt
  • %TEMP%\adobe_admlogs\readme-warning.txt
  • %HOMEPATH%\desktop\readme-warning.txt
  • C:\readme-warning.txt
  • %TEMP%\9ea3.tmp.exe
  • %APPDATA%\eaievws
  • C:\far2\encyclopedia\tap\readme-warning.txt
  • C:\far2\encyclopedia\readme-warning.txt
Sets the 'hidden' attribute to the following files
  • %APPDATA%\eaievws
Moves the following files
  • from %TEMP%\adobearm.log to %TEMP%\adobearm.log.kjhslgjkjdfg
  • from %TEMP%\jusched.log to %TEMP%\jusched.log.kjhslgjkjdfg
  • from %TEMP%\microsoft .net framework 4.5 setup_20150506_155317844.html to %TEMP%\microsoft .net framework 4.5 setup_20150506_155317844.html.kjhslgjkjdfg
  • from %TEMP%\microsoft .net framework 4.5.2 setup_20151216_212237215-msi_netfx_full_gdr_x64.msi.txt to %TEMP%\microsoft .net framework 4.5.2 setup_20151216_212237215-msi_netfx_full_gdr_x64.msi.txt.kjhslgjkjdfg
  • from %TEMP%\microsoft .net framework 4.5.2 setup_20151216_212237215.html to %TEMP%\microsoft .net framework 4.5.2 setup_20151216_212237215.html.kjhslgjkjdfg
  • from %TEMP%\microsoft visual c++ 2010 x86 redistributable setup_20150506_155226438.html to %TEMP%\microsoft visual c++ 2010 x86 redistributable setup_20150506_155226438.html.kjhslgjkjdfg
  • from %TEMP%\msi1cfbe.log to %TEMP%\msi1cfbe.log.kjhslgjkjdfg
  • from %TEMP%\msic204f.log to %TEMP%\msic204f.log.kjhslgjkjdfg
  • from %TEMP%\msie45bf.log to %TEMP%\msie45bf.log.kjhslgjkjdfg
  • from %TEMP%\wallpaper.bmp to %TEMP%\wallpaper.bmp.kjhslgjkjdfg
  • from %TEMP%\msieb217.log to %TEMP%\msieb217.log.kjhslgjkjdfg
  • from %TEMP%\rgie195.tmp to %TEMP%\rgie195.tmp.kjhslgjkjdfg
  • from %TEMP%\rgie195.tmp-tmp to %TEMP%\rgie195.tmp-tmp.kjhslgjkjdfg
  • from %TEMP%\setupexe(20151124155624744).log to %TEMP%\setupexe(20151124155624744).log.kjhslgjkjdfg
  • from %TEMP%\setupexe(201603101200226dc).log to %TEMP%\setupexe(201603101200226dc).log.kjhslgjkjdfg
  • from %TEMP%\setupexe(20160310140634718).log to %TEMP%\setupexe(20160310140634718).log.kjhslgjkjdfg
  • from %TEMP%\user.bmp to %TEMP%\user.bmp.kjhslgjkjdfg
  • from %TEMP%\jawshtml.html to %TEMP%\jawshtml.html.kjhslgjkjdfg
  • from %TEMP%\msid38c.log to %TEMP%\msid38c.log.kjhslgjkjdfg
  • from %TEMP%\javadeployreg.log to %TEMP%\javadeployreg.log.kjhslgjkjdfg
  • from %TEMP%\dd_setuputility.txt to %TEMP%\dd_setuputility.txt.kjhslgjkjdfg
  • from %TEMP%\adobearm_notlocked.log to %TEMP%\adobearm_notlocked.log.kjhslgjkjdfg
  • from %TEMP%\adobesfx.log to %TEMP%\adobesfx.log.kjhslgjkjdfg
  • from %TEMP%\ae7f.tmp to %TEMP%\ae7f.tmp.kjhslgjkjdfg
  • from %TEMP%\aspnetsetup.log to %TEMP%\aspnetsetup.log.kjhslgjkjdfg
  • from %TEMP%\aspnetsetup_00000.log to %TEMP%\aspnetsetup_00000.log.kjhslgjkjdfg
  • from %TEMP%\aspnetsetup_00001.log to %TEMP%\aspnetsetup_00001.log.kjhslgjkjdfg
  • from %TEMP%\dd_ndp452-kb2901907-x86-x64-allos-enu_decompression_log.txt to %TEMP%\dd_ndp452-kb2901907-x86-x64-allos-enu_decompression_log.txt.kjhslgjkjdfg
  • from %TEMP%\dd_vcredist_amd64_20151216210341.log to %TEMP%\dd_vcredist_amd64_20151216210341.log.kjhslgjkjdfg
  • from %TEMP%\dotnetfx.log to %TEMP%\dotnetfx.log.kjhslgjkjdfg
  • from %TEMP%\dd_vcredist_amd64_20151216210341_000_vcruntimeminimum_x64.log to %TEMP%\dd_vcredist_amd64_20151216210341_000_vcruntimeminimum_x64.log.kjhslgjkjdfg
  • from %TEMP%\dd_vcredist_amd64_20151216210341_001_vcruntimeadditional_x64.log to %TEMP%\dd_vcredist_amd64_20151216210341_001_vcruntimeadditional_x64.log.kjhslgjkjdfg
  • from %TEMP%\dd_vcredist_x86_20151216210157.log to %TEMP%\dd_vcredist_x86_20151216210157.log.kjhslgjkjdfg
  • from %TEMP%\dd_vcredist_x86_20151216210157_000_vcruntimeminimum_x86.log to %TEMP%\dd_vcredist_x86_20151216210157_000_vcruntimeminimum_x86.log.kjhslgjkjdfg
  • from %TEMP%\dd_vcredist_x86_20151216210157_001_vcruntimeadditional_x86.log to %TEMP%\dd_vcredist_x86_20151216210157_001_vcruntimeadditional_x86.log.kjhslgjkjdfg
  • from %TEMP%\dd_wcf_ca_smci_20151217_052858_840.txt to %TEMP%\dd_wcf_ca_smci_20151217_052858_840.txt.kjhslgjkjdfg
  • from %TEMP%\dd_wcf_ca_smci_20151217_052908_497.txt to %TEMP%\dd_wcf_ca_smci_20151217_052908_497.txt.kjhslgjkjdfg
  • from %TEMP%\dotnetfxsdk.log to %TEMP%\dotnetfxsdk.log.kjhslgjkjdfg
  • from %TEMP%\wmsetup.log to %TEMP%\wmsetup.log.kjhslgjkjdfg
Deletes itself.
Creates ransom message files (Trojan.Encoder).
Network activity
TCP
HTTP GET requests
  • http://gs#####netiplist.net/lok.exe
HTTP POST requests
  • http://gs######etiplist.download/sub/index.php
UDP
  • DNS ASK gs######etiplist.download
  • DNS ASK gs#####netiplist.net
Miscellaneous
Creates and executes the following
  • '%TEMP%\9ea3.tmp.exe'
  • '%TEMP%\9ea3.tmp.exe' n2920
  • '<SYSTEM32>\cmd.exe' ' (with hidden window)
Executes the following
  • '<SYSTEM32>\cmd.exe'
  • '<SYSTEM32>\sc.exe' delete "ReportServer$OPTIMA"
  • '<SYSTEM32>\sc.exe' delete "msftesql$SQLEXPRESS"
  • '<SYSTEM32>\sc.exe' delete "postgresql-x64-9.4"
  • '<SYSTEM32>\sc.exe' delete WRSVC
  • '<SYSTEM32>\sc.exe' delete ekrn
  • '<SYSTEM32>\sc.exe' delete klim6
  • '<SYSTEM32>\sc.exe' delete "AVP18.0.0"
  • '<SYSTEM32>\sc.exe' delete KLIF
  • '<SYSTEM32>\sc.exe' delete klpd
  • '<SYSTEM32>\sc.exe' delete klflt
  • '<SYSTEM32>\sc.exe' delete klbackupdisk
  • '<SYSTEM32>\sc.exe' delete klbackupflt
  • '<SYSTEM32>\sc.exe' delete klkbdflt
  • '<SYSTEM32>\sc.exe' delete klmouflt
  • '<SYSTEM32>\sc.exe' delete klhk
  • '<SYSTEM32>\sc.exe' delete "KSDE1.0.0"
  • '<SYSTEM32>\sc.exe' delete kltap
  • '<SYSTEM32>\sc.exe' delete TmFilter
  • '<SYSTEM32>\sc.exe' delete TMLWCSService
  • '<SYSTEM32>\sc.exe' delete tmusa
  • '<SYSTEM32>\sc.exe' delete TmPreFilter
  • '<SYSTEM32>\sc.exe' delete TMSmartRelayService
  • '<SYSTEM32>\sc.exe' delete TMiCRCScanService
  • '<SYSTEM32>\sc.exe' delete VSApiNt
  • '<SYSTEM32>\sc.exe' delete TmCCSF
  • '<SYSTEM32>\sc.exe' delete tmlisten
  • '<SYSTEM32>\sc.exe' delete TmProxy
  • '<SYSTEM32>\sc.exe' delete ntrtscan
  • '<SYSTEM32>\sc.exe' delete ofcservice
  • '<SYSTEM32>\sc.exe' delete "SQLAgent$OPTIMA"
  • '<SYSTEM32>\vssvc.exe'
  • '<SYSTEM32>\sc.exe' delete "MSSQL$OPTIMA"
  • '<SYSTEM32>\sc.exe' delete "SQLAgent$WOLTERSKLUWER"
  • '<SYSTEM32>\sc.exe' delete vmickvpexchange
  • '<SYSTEM32>\sc.exe' delete vmicguestinterface
  • '<SYSTEM32>\sc.exe' delete vmicshutdown
  • '<SYSTEM32>\sc.exe' delete vmicheartbeat
  • '<SYSTEM32>\sc.exe' delete vmicrdv
  • '<SYSTEM32>\sc.exe' delete storflt
  • '<SYSTEM32>\sc.exe' delete vmictimesync
  • '<SYSTEM32>\sc.exe' delete vmicvss
  • '<SYSTEM32>\sc.exe' delete MSSQLFDLauncher
  • '<SYSTEM32>\sc.exe' delete MSSQLSERVER
  • '<SYSTEM32>\sc.exe' delete SQLSERVERAGENT
  • '<SYSTEM32>\sc.exe' delete SQLBrowser
  • '<SYSTEM32>\sc.exe' delete SQLTELEMETRY
  • '<SYSTEM32>\sc.exe' delete MsDtsServer130
  • '<SYSTEM32>\sc.exe' delete SSISTELEMETRY130
  • '<SYSTEM32>\sc.exe' delete SQLWriter
  • '<SYSTEM32>\sc.exe' delete "MSSQL$VEEAMSQL2012"
  • '<SYSTEM32>\sc.exe' delete "SQLAgent$VEEAMSQL2012"
  • '<SYSTEM32>\sc.exe' delete MSSQL
  • '<SYSTEM32>\sc.exe' delete SQLAgent
  • '<SYSTEM32>\sc.exe' delete MSSQLServerADHelper100
  • '<SYSTEM32>\sc.exe' delete MSSQLServerOLAPService
  • '<SYSTEM32>\sc.exe' delete MsDtsServer100
  • '<SYSTEM32>\sc.exe' delete ReportServer
  • '<SYSTEM32>\sc.exe' delete "SQLTELEMETRY$HL"
  • '<SYSTEM32>\sc.exe' delete TMBMServer
  • '<SYSTEM32>\sc.exe' delete "MSSQL$PROGID"
  • '<SYSTEM32>\sc.exe' delete "MSSQL$WOLTERSKLUWER"
  • '<SYSTEM32>\sc.exe' delete "SQLAgent$PROGID"
  • '<SYSTEM32>\sc.exe' delete "MSSQLFDLauncher$OPTIMA"
  • '<SYSTEM32>\svchost.exe' -k swprv

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.
Download Dr.Web

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.

Download Dr.Web

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