Overview

overview

10

Static

static

10

RyukClientExecuto.exe

windows10-2004-x64

10

RyukClientExecuto.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    140s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    08/07/2026, 22:28

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General

  • Target
    RyukClientExecuto.exe
  • Size 3.9MB
  • Sample260708-2dx93aaz3x
  • SHA256 31be22bf9565bf8941c53279cc7dfac4e20d21a8b62b619c59ff707b15a775a9
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
adwareexecutionratonratpersistenceransomwarespywarestealer

Malware Config

Extracted

Family

  • ratonrat

Version

  • v4.0.0

C2

  • portbuddy.dev:40644

Mutex

  • dyCO1VinsWruzl3uCRZigq1

Attributes
  • assist

    false

  • box

    true

  • box_icon

    Information

  • box_msg

    Ryuk Client Executor Server's Are Currently Offline, Please Try Again Later

  • box_title

    Ryuk Client Server

  • defender

    true

  • delay

    0

  • hide_file

    false

  • open_website

    false

  • process_critical

    false

  • raw

    silly21

  • reconnect

    3

  • startup

    true

  • tag

    Infected

  • uac

    false

  • vm

    false

  • website

    https://t.me/example

Signatures

  • Family: RatonRAT

    RatonRAT is an information stealer written in C#.

    stealerratonrat
  • Detects RatonRAT payload 1 IoCs
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell and hide display window.

    execution
  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 38 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 59 IoCs
  • Suspicious use of FindShellTrayWindow 52 IoCs
  • Suspicious use of SendNotifyMessage 40 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\RyukClientExecuto.exe
    "C:\Users\Admin\AppData\Local\Temp\RyukClientExecuto.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:944
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "RyukClientExecuto" /sc ONLOGON /tr "\"C:\Users\Admin\AppData\Local\Temp\RyukClientExecuto.exe\"" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:5252
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" -NonInteractive -WindowStyle Hidden -ExecutionPolicy Bypass "Add-MpPreference -ExclusionProcess 'C:\Users\Admin\AppData\Local\Temp\RyukClientExecuto.exe'"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3596
  • C:\Users\Admin\AppData\Local\Temp\RyukClientExecuto.exe
    "C:\Users\Admin\AppData\Local\Temp\RyukClientExecuto.exe"
    1⤵
      PID:4720
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:3576
      • C:\Windows\explorer.exe
        explorer.exe /LOADSAVEDWINDOWS
        2⤵
        • Boot or Logon Autostart Execution: Active Setup
        • Enumerates connected drives
        • Checks SCSI registry key(s)
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        PID:792
    • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
      "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:1820
    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:2308

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          prep_Activatable Class_Hermes_perf.cache
          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
          • Size 595B
          • SHA256 d4e60617c2afab8263febabe7f14f18595715078d71307a8cefe0707dae76dee
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          memory/944-29-0x00007FFCCA1C0000-0x00007FFCCAB64000-memory.dmp
          Download

          memory/944-17-0x000001B272A30000-0x000001B272DA6000-memory.dmp
          Download

          memory/944-3-0x00007FFCCA1C0000-0x00007FFCCAB64000-memory.dmp
          Download

          memory/944-4-0x000001B258300000-0x000001B258308000-memory.dmp
          Download

          memory/944-5-0x00007FFCCA1C0000-0x00007FFCCAB64000-memory.dmp
          Download

          memory/944-6-0x00007FFCCA1C0000-0x00007FFCCAB64000-memory.dmp
          Download

          memory/944-7-0x00007FFCCA1C0000-0x00007FFCCAB64000-memory.dmp
          Download

          memory/944-8-0x00007FFCCA1C0000-0x00007FFCCAB64000-memory.dmp
          Download

          memory/944-9-0x00007FFCCA1C0000-0x00007FFCCAB64000-memory.dmp
          Download

          memory/944-10-0x00007FFCCA1C0000-0x00007FFCCAB64000-memory.dmp
          Download

          memory/944-11-0x00007FFCCA1C0000-0x00007FFCCAB64000-memory.dmp
          Download

          memory/944-12-0x00007FFCCA1C0000-0x00007FFCCAB64000-memory.dmp
          Download

          memory/944-13-0x00007FFCCA1C0000-0x00007FFCCAB64000-memory.dmp
          Download

          memory/944-1-0x000001B257A50000-0x000001B257E46000-memory.dmp
          Download

          memory/944-2-0x00007FFCCA1C0000-0x00007FFCCAB64000-memory.dmp
          Download

          memory/944-0-0x00007FFCCA34F000-0x00007FFCCA350000-memory.dmp
          Download

          memory/944-27-0x00007FFCCA1C0000-0x00007FFCCAB64000-memory.dmp
          Download

          memory/944-21-0x00007FFCCA1C0000-0x00007FFCCAB64000-memory.dmp
          Download

          memory/1820-78-0x000001FF82E30000-0x000001FF82E50000-memory.dmp
          Download

          memory/1820-48-0x000001FF801E0000-0x000001FF802E0000-memory.dmp
          Download

          memory/1820-68-0x000001FF82A50000-0x000001FF82A70000-memory.dmp
          Download

          memory/1820-96-0x000001FF942B0000-0x000001FF942D0000-memory.dmp
          Download

          memory/1820-70-0x000001FF82EB0000-0x000001FF82FB0000-memory.dmp
          Download

          memory/2308-207-0x000001DE38490000-0x000001DE388C4000-memory.dmp
          Download

          memory/3596-24-0x000001ADFC8D0000-0x000001ADFC8EE000-memory.dmp
          Download

          memory/3596-25-0x000001ADFC8F0000-0x000001ADFC9A2000-memory.dmp
          Download

          memory/3596-26-0x000001ADFC9B0000-0x000001ADFC9BA000-memory.dmp
          Download

          memory/3596-20-0x000001ADFC810000-0x000001ADFC832000-memory.dmp
          Download

          memory/4720-16-0x00007FFCCA1C0000-0x00007FFCCAB64000-memory.dmp
          Download

          memory/4720-15-0x00007FFCCA1C0000-0x00007FFCCAB64000-memory.dmp
          Download

          memory/4720-14-0x00007FFCCA1C0000-0x00007FFCCAB64000-memory.dmp
          Download