Overview

overview

10

Static

static

10

2026-07-04...ex.exe

windows10-2004-x64

9

2026-07-04...ex.exe

windows11-ltsc_2024-x64

9

Analysis

  • max time kernel
    84s
  • max time network
    149s
  • 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, 04:23

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General

  • Target
    2026-07-04_59ae5d7118172d209e362ad06bd70435_cryptolocker_elex.exe
  • Size 40KB
  • Sample260704-ezyfmaa121
  • SHA256 148a6165a82bd5f39427c2644a0561b167eb406c60bdfc3075ba0aa3df554d6e
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
adwarediscoverypersistenceransomwarespyware

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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.

    persistence
  • 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.

    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
  • 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.

    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_59ae5d7118172d209e362ad06bd70435_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-04_59ae5d7118172d209e362ad06bd70435_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1316
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:5944
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:5572
    • 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:2336
  • 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:1856
  • 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:2524

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 607B
        • SHA256 be6b74e52e5eef1f1c27c0976bf3bf1bfa99958c00bbef2898a602f691be6dae
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        hasfj.exe
        • Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
        • Size 41KB
        • SHA256 1662e9358a543d6b156d12bfed0cc3748f9f0f330e27cced27aae43bf20ab451
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/1316-3-0x00000000022C0000-0x00000000022C6000-memory.dmp
        Download

        memory/1316-0-0x0000000008004000-0x0000000008005000-memory.dmp
        Download

        memory/1316-2-0x0000000008000000-0x000000000800A000-memory.dmp
        Download

        memory/1316-1-0x0000000002290000-0x0000000002296000-memory.dmp
        Download

        memory/2336-217-0x000000000F330000-0x000000000F3AC000-memory.dmp
        Download

        memory/2524-28-0x00000242001E0000-0x00000242002E0000-memory.dmp
        Download

        memory/2524-62-0x0000024201A60000-0x0000024201A80000-memory.dmp
        Download

        memory/2524-91-0x0000024214220000-0x0000024214240000-memory.dmp
        Download

        memory/2524-63-0x0000024201EA0000-0x0000024201FA0000-memory.dmp
        Download

        memory/2524-76-0x0000024201CA0000-0x0000024201CC0000-memory.dmp
        Download

        memory/5944-18-0x0000000008000000-0x000000000800A000-memory.dmp
        Download

        memory/5944-20-0x0000000008000000-0x000000000800A000-memory.dmp
        Download

        memory/5944-21-0x0000000002290000-0x0000000002296000-memory.dmp
        Download