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Trojan.MulDrop14.2800

Added to the Dr.Web virus database: 2020-10-13

Virus description added:

Technical Information

To ensure autorun and distribution
Sets the following service settings
  • [<HKLM>\SYSTEM\ControlSet001\Services\fltsrv] 'Start' = '00000000'
  • [<HKLM>\SYSTEM\ControlSet001\Services\fltsrv] 'ImagePath' = 'system32\DRIVERS\fltsrv.sys'
  • [<HKLM>\System\CurrentControlSet\Services\fltsrv] 'Start' = '00000000'
  • [<HKLM>\System\CurrentControlSet\Services\fltsrv] 'ImagePath' = 'System32\DRIVERS\fltsrv.sys'
  • [<HKLM>\SYSTEM\ControlSet001\Services\snapman] 'Start' = '00000000'
  • [<HKLM>\SYSTEM\ControlSet001\Services\snapman] 'ImagePath' = 'system32\DRIVERS\snapman.sys'
  • [<HKLM>\System\CurrentControlSet\Services\snapman] 'Start' = '00000000'
  • [<HKLM>\System\CurrentControlSet\Services\snapman] 'ImagePath' = 'System32\DRIVERS\snapman.sys'
  • [<HKLM>\SYSTEM\ControlSet001\Services\volume_tracker] 'Start' = '00000000'
  • [<HKLM>\SYSTEM\ControlSet001\Services\volume_tracker] 'ImagePath' = 'system32\DRIVERS\volume_tracker.sys'
  • [<HKLM>\System\CurrentControlSet\Services\volume_tracker] 'Start' = '00000000'
  • [<HKLM>\System\CurrentControlSet\Services\volume_tracker] 'ImagePath' = 'System32\DRIVERS\volume_tracker.sys'
Creates the following services
  • 'fltsrv' System32\DRIVERS\fltsrv.sys
  • 'snapman' System32\DRIVERS\snapman.sys
  • 'volume_tracker' System32\DRIVERS\volume_tracker.sys
Modifies file system
Creates the following files
  • %TEMP%\4c5b.tmp\4c6b.tmp\4c6c.bat
  • nul
Miscellaneous
Creates and executes the following
  • '<SYSTEM32>\cmd.exe' /c "%TEMP%\4C5B.tmp\4C6B.tmp\4C6C.bat <Full path to file>"' (with hidden window)
Executes the following
  • '<SYSTEM32>\cmd.exe' /c "%TEMP%\4C5B.tmp\4C6B.tmp\4C6C.bat <Full path to file>"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "pcs_io.dll" /T REG_SZ /D "pcs_io.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "disk_backup.dll" /T REG_SZ /D "disk_backup.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "archive3_adapter.dll" /T REG_SZ /D "archive3_adapter.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "re2.dll" /T REG_SZ /D "re2.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "rpc_client.dll" /T REG_SZ /D "rpc_client.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "astor_client.dll" /T REG_SZ /D "astor_client.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "kb_link.dll" /T REG_SZ /D "kb_link.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "file_backup.dll" /T REG_SZ /D "file_backup.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "winpthreads4.dll" /T REG_SZ /D "winpthreads4.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "archive3.dll" /T REG_SZ /D "archive3.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "thread_pool.dll" /T REG_SZ /D "thread_pool.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "mspack.dll" /T REG_SZ /D "mspack.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "libcrypto10.dll" /T REG_SZ /D "libcrypto10.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "resource.dll" /T REG_SZ /D "resource.dll"
  • '<SYSTEM32>\sc.exe' start volume_tracker
  • '<SYSTEM32>\sc.exe' create volume_tracker type= kernel start= boot binpath= "System32\DRIVERS\volume_tracker.sys"
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\volume_tracker /f /v "Group" /t REG_SZ /d "PnP Filter"
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\volume_tracker /f /v "DisplayName" /t REG_SZ /d "Acronis Volume Tracker"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "libssl10.dll" /T REG_SZ /D "libssl10.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "boot_assist.dll" /T REG_SZ /D "boot_assist.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "zstd.dll" /T REG_SZ /D "zstd.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\BackupAndRecovery\Commoncomponents /F /V "libcrypto10.dll" /T REG_SZ /D "libcrypto10.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\TrueImageHome\Settings /f /v "ServiceDir" /T REG_SZ /D ""
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Trueimage /F /V "standard" /T REG_SZ /D " 12108 0 31109 12 24 0120 3 7 31 98 23 0 18 13120 18 6 97 27 2 1 16109120 5109 17 17 31 29 98 3120 97 4 7 13 12 3...
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "TrueImage.exe" /T REG_SZ /D "TrueImage.exe"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "backup_worker.exe" /T REG_SZ /D "backup_worker.exe"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "auto_reactivate64.bin" /T REG_SZ /D "auto_reactivate64.bin"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "auto_reactivate.bin" /T REG_SZ /D "auto_reactivate.bin"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\Commoncomponents /F /V "spawn.exe" /T REG_SZ /D "spawn.exe"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\OnlineBackupStandalone\CommonComponents /F /V "rpc_client.dll" /T REG_SZ /D "rpc_client.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\GlobalComponents /F /V "snapapi.dll" /T REG_SZ /D "snapapi.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\GlobalComponents /F /V "volume_tracker_driver_api.dll" /T REG_SZ /D "volume_tracker_driver_api.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\GlobalComponents /F /V "tib_api.dll" /T REG_SZ /D "tib_api.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\GlobalComponents /F /V "tib_mounter.dll" /T REG_SZ /D "tib_mounter.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\GlobalComponents /F /V "ulxmlrpcpp.dll" /T REG_SZ /D "ulxmlrpcpp.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\GlobalComponents /F /V "logging.dll" /T REG_SZ /D "logging.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\GlobalComponents /F /V "icu38.dll" /T REG_SZ /D "icu38.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\GlobalComponents /F /V "expat.dll" /T REG_SZ /D "expat.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\BackupAndRecovery\Commoncomponents /F /V "resource.dll" /T REG_SZ /D "resource.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\BackupAndRecovery\Commoncomponents /F /V "libssl10.dll" /T REG_SZ /D "libssl10.dll"
  • '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Acronis\BackupAndRecovery\Commoncomponents /F /V "thread_pool.dll" /T REG_SZ /D "thread_pool.dll"
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\volume_tracker /f /v "ImagePath" /t REG_EXPAND_SZ /d "system32\DRIVERS\volume_tracker.sys"
  • '<SYSTEM32>\reg.exe' QUERY "HKLM\SYSTEM\ControlSet001\Control" /v SystemStartOptions
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\volume_tracker /f /v "Tag" /t REG_DWORD /d "8"
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\volume_tracker /f /v "Start" /t REG_DWORD /d "0"
  • '<SYSTEM32>\reg.exe' IMPORT %TEMP%\ATIH2021SV\ATIH2021ZC.reg
  • '<SYSTEM32>\reg.exe' IMPORT %TEMP%\ATIH2021SV\ATIH2021ZB.reg
  • '<SYSTEM32>\reg.exe' IMPORT %TEMP%\ATIH2021SV\ATIH2021ZY.reg
  • '<SYSTEM32>\reg.exe' QUERY HKLM\SYSTEM\ControlSet001\Services\fltsrv /ve
  • '<SYSTEM32>\reg.exe' QUERY HKLM\SYSTEM\ControlSet001\Services\snapman /ve
  • '<SYSTEM32>\reg.exe' Delete "HKLM\SOFTWARE\Acronis\TrueImage" /f
  • '<SYSTEM32>\reg.exe' Delete "HKLM\SOFTWARE\Acronis\CommonComponents" /f
  • '<SYSTEM32>\reg.exe' QUERY "HKLM\SOFTWARE\Wow6432node\Wow6432node\Acronis\Trueimage"
  • '<SYSTEM32>\reg.exe' IMPORT %TEMP%\ATIH2021SV\fltsrv2.reg
  • '<SYSTEM32>\reg.exe' EXPORT "HKLM\SYSTEM\ControlSet001\Control\Class\{4d36e967-e325-11ce-bfc1-08002be10318}" %TEMP%\ATIH2021SV\0fltsrv.reg /y
  • '<SYSTEM32>\reg.exe' QUERY "HKLM\SYSTEM\ControlSet001\Control\Class\{53966cb1-4d46-4166-bf23-c522403cd495}" /v "UpperFilters"
  • '<SYSTEM32>\reg.exe' QUERY "HKLM\SYSTEM\ControlSet001\Control\Class\{53487c23-680f-4585-acc3-1f10d6777e82}" /v "UpperFilters"
  • '<SYSTEM32>\reg.exe' QUERY "HKLM\SYSTEM\ControlSet001\Services\volume_tracker"
  • '<SYSTEM32>\reg.exe' QUERY "HKLM\SYSTEM\ControlSet001\Services\snapman"
  • '<SYSTEM32>\reg.exe' QUERY "HKLM\SYSTEM\ControlSet001\Services\fltsrv"
  • '<SYSTEM32>\reg.exe' QUERY "HKLM\SOFTWARE\Wow6432node\Wow6432node\Acronis"
  • '<SYSTEM32>\reg.exe' QUERY "HKLM\SOFTWARE\Wow6432node\Acronis"
  • '<SYSTEM32>\reg.exe' QUERY "HKLM\SOFTWARE\Acronis\TrueImage"
  • '<SYSTEM32>\reg.exe' QUERY "HKLM\SYSTEM\ControlSet001\Control\Class\{4d36e967-e325-11ce-bfc1-08002be10318}" /v "UpperFilters"
  • '<SYSTEM32>\reg.exe' IMPORT %TEMP%\ATIH2021SV\snapman2.reg
  • '<SYSTEM32>\reg.exe' IMPORT %TEMP%\ATIH2021SV\volume_tracker2.reg
  • '<SYSTEM32>\reg.exe' IMPORT %TEMP%\ATIH2021SV\UpperFilters2.reg
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\volume_tracker /f /v "Type" /t REG_DWORD /d "1"
  • '<SYSTEM32>\sc.exe' start snapman
  • '<SYSTEM32>\sc.exe' create snapman type= kernel start= boot binpath= "System32\DRIVERS\snapman.sys"
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\snapman /f /v "DisplayName" /t REG_SZ /d "Acronis Snapshots Manager"
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\snapman /f /v "ImagePath" /t REG_EXPAND_SZ /d "system32\DRIVERS\snapman.sys"
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\snapman /f /v "ErrorControl" /t REG_DWORD /d "1"
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\snapman /f /v "Start" /t REG_DWORD /d "0"
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\snapman /f /v "Type" /t REG_DWORD /d "1"
  • '<SYSTEM32>\sc.exe' start fltsrv
  • '<SYSTEM32>\sc.exe' create fltsrv type= kernel start= boot binpath= "System32\DRIVERS\fltsrv.sys"
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\fltsrv /f /v "Group" /t REG_SZ /d "Filter"
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\fltsrv /f /v "DisplayName" /t REG_SZ /d "Acronis Storage Filter Management"
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\fltsrv /f /v "ImagePath" /t REG_EXPAND_SZ /d "system32\DRIVERS\fltsrv.sys"
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\fltsrv /f /v "Tag" /t REG_DWORD /d "2"
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\fltsrv /f /v "ErrorControl" /t REG_DWORD /d "1"
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\fltsrv /f /v "Start" /t REG_DWORD /d "0"
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\fltsrv /f /v "Type" /t REG_DWORD /d "1"
  • '<SYSTEM32>\reg.exe' IMPORT %TEMP%\ATIH2021SV\0fltsrv2.reg
  • '<SYSTEM32>\reg.exe' IMPORT %TEMP%\ATIH2021SV\partmgr2.reg
  • '<SYSTEM32>\reg.exe' add HKLM\SYSTEM\ControlSet001\Services\volume_tracker /f /v "ErrorControl" /t REG_DWORD /d "1"
  • '<SYSTEM32>\find.exe' /i "MININT"

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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.
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    • 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);
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