Analysis

  • max time kernel
    131s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    01/07/2026, 11:21

General

  • Target
    2026-07-01_fc378c2d163fb263c7662d4677179ecb_elex_wannacry.exe
  • Size 57KB
  • Sample260701-nf17vaev9t
  • SHA256 6a6ea5b668fbf3d6fed00d7b7ea30af5220121510236b5d5a3ea3e57a335b094
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Detects executables built or packed with MPress PE compressor 4 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.

  • Executes dropped EXE 1 IoCs
  • 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 2 IoCs

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

  • 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
  • Modifies registry class 40 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 2 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.

  • Uses Volume Shadow Copy WMI provider

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

  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-07-01_fc378c2d163fb263c7662d4677179ecb_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-01_fc378c2d163fb263c7662d4677179ecb_elex_wannacry.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2796
    • C:\Users\Admin\AppData\Local\Temp\update_pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\update_pdf.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:6140
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:4228
    • 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:6024
  • 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:4308
  • 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:2344

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 599B
        • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
        • MD5 SHA1 SHA512 TLSH

        update_pdf.exe

        • Path C:\Users\Admin\AppData\Local\Temp\update_pdf.exe
        • Size 58KB
        • SHA256 61de247e3e467be730e761ce0eedfaaa635f27e3ef547c1db6247effb2eee30e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2796-0-0x0000000000400000-0x000000000040B000-memory.dmp

        memory/2796-9-0x0000000000400000-0x000000000040B000-memory.dmp

        memory/4308-25-0x0000015E001E0000-0x0000015E002E0000-memory.dmp

        memory/4308-23-0x0000015E001E0000-0x0000015E002E0000-memory.dmp

        memory/4308-58-0x0000015E14000000-0x0000015E14020000-memory.dmp

        memory/4308-32-0x0000015E01CE0000-0x0000015E01DE0000-memory.dmp

        memory/4308-33-0x0000015E01B20000-0x0000015E01B40000-memory.dmp

        memory/4308-31-0x0000015E018C0000-0x0000015E018E0000-memory.dmp

        memory/6024-184-0x000000000A830000-0x000000000A9BE000-memory.dmp

        memory/6140-21-0x0000000000400000-0x000000000040B000-memory.dmp