Overview

overview

10

Static

static

10

2026-07-04...ry.exe

windows10-2004-x64

10

2026-07-04...ry.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    142s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/07/2026, 21:54

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General

  • Target
    2026-07-04_7ce16f50391bdf4c2e4448233c560d7f_elex_wannacry.exe
  • Size 57KB
  • Sample260704-1sb5psev5s
  • SHA256 d987cd6289726f98eb79563f6c0cee2ee152ec12ec409dda8d633413ecf62619
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
adwarediscoveryjukopersistenceransomwarespywaretrojan

Malware Config

Signatures

  • Family: Juko

    Juko is a trojan written in C++.

    trojanjuko
  • Detects Juko 7 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
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 4 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

    discovery
  • 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 40 IoCs
  • Runs ping.exe 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of FindShellTrayWindow 54 IoCs
  • Suspicious use of SendNotifyMessage 40 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 7 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\2026-07-04_7ce16f50391bdf4c2e4448233c560d7f_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-04_7ce16f50391bdf4c2e4448233c560d7f_elex_wannacry.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4904
    • C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe
      "C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe" -r
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2516
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 2&del "C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe"&ping 127.0.0.1 -n 2&rename "C:\Users\Admin\AppData\Roaming\Mozilla\00000DA2" WINWORD.exe&ping 127.0.0.1 -n 2&"C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe" \r
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Suspicious use of WriteProcessMemory
        PID:2028
        • C:\Windows\SysWOW64\PING.EXE
          ping 127.0.0.1 -n 2
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:3476
        • C:\Windows\SysWOW64\PING.EXE
          ping 127.0.0.1 -n 2
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:4188
        • C:\Windows\SysWOW64\PING.EXE
          ping 127.0.0.1 -n 2
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:3844
        • C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe
          "C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe" \r
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          PID:2716
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:5964
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2792
      • 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:2616
    • 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:4068
    • 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:2036

    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

          00000DA2
          • Path C:\Users\Admin\AppData\Roaming\Mozilla\00000DA2
          • Size 57KB
          • SHA256 fc86defc5fd7064b4569cb39d0bb6172b8325abafac3c3500e4c01aa549f757d
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          WINWORD.exe
          • Path C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe
          • Size 57KB
          • SHA256 d987cd6289726f98eb79563f6c0cee2ee152ec12ec409dda8d633413ecf62619
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          memory/2516-12-0x0000000000400000-0x000000000041F000-memory.dmp
          Download

          memory/2616-203-0x000000000AC00000-0x000000000AE5F000-memory.dmp
          Download

          memory/2716-15-0x0000000000400000-0x000000000041F000-memory.dmp
          Download

          memory/2716-16-0x0000000000400000-0x000000000041F000-memory.dmp
          Download

          memory/4068-64-0x0000018714690000-0x00000187146B0000-memory.dmp
          Download

          memory/4068-50-0x0000018701C60000-0x0000018701C80000-memory.dmp
          Download

          memory/4068-30-0x0000018701ED0000-0x0000018701FD0000-memory.dmp
          Download

          memory/4068-19-0x00000187001E0000-0x00000187002E0000-memory.dmp
          Download

          memory/4068-20-0x00000187001E0000-0x00000187002E0000-memory.dmp
          Download

          memory/4068-18-0x00000187001E0000-0x00000187002E0000-memory.dmp
          Download

          memory/4068-29-0x0000018701A20000-0x0000018701A40000-memory.dmp
          Download

          memory/4904-0-0x0000000000400000-0x000000000041F000-memory.dmp
          Download

          memory/4904-9-0x0000000000400000-0x000000000041F000-memory.dmp
          Download