Author: Mc Justine De Guzman   
 PLATFORM:

Windows

 OVER ALL RISK RATING:
 DAMAGE POTENTIAL::
 DISTRIBUTION POTENTIAL::
 REPORTED INFECTION:
 INFORMATION EXPOSURE:
Low
Medium
High
Critical

  • Threat Type:
    Ransomware

  • Destructiveness:
    No

  • Encrypted:
     

  • In the wild::
    Yes

  OVERVIEW

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File size: 3,382,272 bytes
File type: EXE
INITIAL SAMPLES RECEIVED DATE: 23 сентября 2021

Detalles de entrada

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Instalación

Infiltra los archivos siguientes:

  • {Random characters}_.key.ssmpt

Agrega los procesos siguientes:

  • net.exe stop "NetMsmqActivator" /y
  • net.exe stop "SamSs" /y
  • net.exe stop "SDRSVC" /y
  • net.exe stop "SstpSvc" /y
  • net.exe stop "UI0Detect" /y
  • net.exe stop "vmvss" /y
  • net.exe stop "VSS" /y
  • net.exe stop "wbengine" /y
  • net.exe stop "WebClient" /y
  • sc.exe config "NetMsmqActivator" start= disabled
  • sc.exe config "SamSs" start= disabled
  • sc.exe config "SDRSVC" start= disabled
  • sc.exe config "SstpSvc" start= disabled
  • sc.exe config "UI0Detect" start= disabled
  • sc.exe config "vmvss" start= disabled
  • sc.exe config "VSS" start= disabled
  • sc.exe config "wbengine" start= disabled
  • sc.exe config "WebClient" start= disabled
  • reg.exe add "HKLM\System\CurrentControlSet\Services\SecurityHealthService" /v "Start" /t REG_DWORD /d "4" /f
  • reg.exe delete "HKLM\Software\Policies\Microsoft\Windows Defender" /f
  • reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender" /v "DisableAntiSpyware" /t REG_DWORD /d "1" /f
  • reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender" /v "DisableAntiVirus" /t REG_DWORD /d "1" /f
  • reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\MpEngine" /v "MpEnablePus" /t REG_DWORD /d "0" /f
  • reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableBehaviorMonitoring" /t REG_DWORD /d "1" /f
  • reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableIOAVProtection" /t REG_DWORD /d "1" /f
  • reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableOnAccessProtection" /t REG_DWORD /d "1" /f
  • reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableRealtimeMonitoring" /t REG_DWORD /d "1" /f
  • reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableScanOnRealtimeEnable" /t REG_DWORD /d "1" /f
  • reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\Reporting" /v "DisableEnhancedNotifications" /t REG_DWORD /d "1" /f
  • reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\SpyNet" /v "DisableBlockAtFirstSeen" /t REG_DWORD /d "1" /f
  • reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\SpyNet" /v "SpynetReporting" /t REG_DWORD /d "0" /f
  • reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\SpyNet" /v "SubmitSamplesConsent" /t REG_DWORD /d "0" /f
  • reg.exe add "HKLM\System\CurrentControlSet\Control\WMI\Autologger\DefenderApiLogger" /v "Start" /t REG_DWORD /d "0" /f
  • reg.exe add "HKLM\System\CurrentControlSet\Control\WMI\Autologger\DefenderAuditLogger" /v "Start" /t REG_DWORD /d "0" /f
  • schtasks.exe /Change /TN "Microsoft\Windows\ExploitGuard\ExploitGuard MDM policy Refresh" /Disable
  • schtasks.exe /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Cache Maintenance" /Disable
  • schtasks.exe /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Cleanup" /Disable
  • schtasks.exe /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Scheduled Scan" /Disable
  • schtasks.exe /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Verification" /Disable
  • reg.exe delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\StartupApproved\Run" /v "Windows Defender" /f
  • reg.exe delete "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Windows Defender" /f
  • reg.exe delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Run" /v "WindowsDefender" /f
  • reg.exe delete "HKCR\*\shellex\ContextMenuHandlers\EPP" /f
  • reg.exe delete "HKCR\Directory\shellex\ContextMenuHandlers\EPP" /f
  • reg.exe delete "HKCR\Drive\shellex\ContextMenuHandlers\EPP" /f
  • reg.exe add "HKLM\System\CurrentControlSet\Services\WdBoot" /v "Start" /t REG_DWORD /d "4" /f
  • reg.exe add "HKLM\System\CurrentControlSet\Services\WdFilter" /v "Start" /t REG_DWORD /d "4" /f
  • reg.exe add "HKLM\System\CurrentControlSet\Services\WdNisDrv" /v "Start" /t REG_DWORD /d "4" /f
  • reg.exe add "HKLM\System\CurrentControlSet\Services\WdNisSvc" /v "Start" /t REG_DWORD /d "4" /f
  • reg.exe add "HKLM\System\CurrentControlSet\Services\WinDefend" /v "Start" /t REG_DWORD /d "4" /f
  • reg.exe add "HKLM\System\CurrentControlSet\Services\SecurityHealthService" /v "Start" /t REG_DWORD /d "4" /f
  • vssadmin.exe delete shadows /all /quiet

Otras modificaciones del sistema

Modifica las siguientes entradas de registro:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Windows Defender
DisableAntiVirus = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Windows Defender\MpEngine
MpEnablePus = 0

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Windows Defender\Real-Time Protection
DisableBehaviorMonitoring = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Windows Defender\Real-Time Protection
DisableIOAVProtection = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Windows Defender\Real-Time Protection
DisableOnAccessProtection = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Windows Defender\Real-Time Protection
DisableRealtimeMonitoring = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Windows Defender\Real-Time Protection
DisableScanOnRealtimeEnable = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Windows Defender\Reporting
DisableEnhancedNotifications = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Windows Defender\SpyNet
DisableBlockAtFirstSeen = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Windows Defender\SpyNet
SpynetReporting = 0

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Windows Defender\SpyNet
SubmitSamplesConsent = 0

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\WMI\Autologger\
DefenderApiLogger
Start = 0

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\WMI\Autologger\
DefenderAuditLogger
Start = 0

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\WdBoot
Start = 4

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\WdFilter
Start = 4

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\WdNisDrv
Start = 4

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\WdNisSvc
Start = 4

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\WinDefend
Start = 4

  SOLUTION

Minimum scan engine: 9.800
First VSAPI Pattern File: 16.984.08
First VSAPI Pattern Release Date: 23 de сентября de 2021
VSAPI OPR PATTERN-VERSION: 16.985.00
VSAPI OPR PATTERN DATE: 24 de сентября de 2021

Step 1

Los usuarios de Windows ME y XP, antes de llevar a cabo cualquier exploración, deben comprobar que tienen desactivada la opción Restaurar sistema para permitir la exploración completa del equipo.

Step 2

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Restaurar este valor del Registro modificado

[ learnMore ]

Importante: si modifica el Registro de Windows incorrectamente, podría hacer que el sistema funcione mal de manera irreversible. Lleve a cabo este paso solo si sabe cómo hacerlo o si puede contar con ayuda de su administrador del sistema. De lo contrario, lea este artículo de Microsoft antes de modificar el Registro del equipo.

 
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender
    • DisableAntiVirus = 1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\MpEngine
    • MpEnablePus = 0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection
    • DisableBehaviorMonitoring = 1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection
    • DisableIOAVProtection = 1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection
    • DisableOnAccessProtection = 1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection
    • DisableRealtimeMonitoring = 1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection
    • DisableScanOnRealtimeEnable = 1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Reporting
    • DisableEnhancedNotifications = 1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\SpyNet
    • DisableBlockAtFirstSeen = 1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\SpyNet
    • SpynetReporting = 0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\SpyNet
    • SubmitSamplesConsent = 0
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\WMI\Autologger\DefenderApiLogger
    • Start = 0
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\WMI\Autologger\DefenderAuditLogger
    • Start = 0
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\WdBoot
    • Start = 4
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\WdFilter
    • Start = 4
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\WdNisDrv
    • Start = 4
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\WdNisSvc
    • Start = 4
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\WinDefend
    • Start = 4

Step 4

Buscar y eliminar este archivo

[ learnMore ]
Puede que algunos de los archivos del componente estén ocultos. Asegúrese de que tiene activada la casilla Buscar archivos y carpetas ocultos en la opción Más opciones avanzadas para que el resultado de la búsqueda incluya todos los archivos y carpetas ocultos.
  • {Encrypted folder}\{Random characters}_HOW_TO_DECRYPT.txt
  • {Random characters}_.key.ssmpt

Step 5

Explorar el equipo con su producto de Trend Micro para eliminar los archivos detectados como Ransom.Win64.HIVE.YABIW En caso de que el producto de Trend Micro ya haya limpiado, eliminado o puesto en cuarentena los archivos detectados, no serán necesarios más pasos. Puede optar simplemente por eliminar los archivos en cuarentena. Consulte esta página de Base de conocimientos para obtener más información.

Step 7

Restore encrypted files from backup.


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