Overview

overview

10

Static

static

10

2026-06-28...ex.exe

windows10-2004-x64

9

2026-06-28...ex.exe

windows11-ltsc_2024-x64

9

Analysis

  • max time kernel
    120s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260618-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    28/06/2026, 22:41

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General

  • Target
    2026-06-28_4fad439ae20897843bda10c74a01f7dc_cryptolocker_elex.exe
  • Size 42KB
  • Sample260628-2mb37agv4n
  • SHA256 8053e9b482e38dba0e7bd8f3ac2c97cb200cc9931dda0be75e040a29f5cc9445
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
adwarediscoverypersistenceransomwarespyware

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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 38 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 32 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-06-28_4fad439ae20897843bda10c74a01f7dc_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-06-28_4fad439ae20897843bda10c74a01f7dc_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5316
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4584
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:2312
    • 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:2256
  • 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:4180
  • 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:2892

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
        Submit Download

        misid.exe
        • Path C:\Users\Admin\AppData\Local\Temp\misid.exe
        • Size 42KB
        • SHA256 0cf3fb5a0ad169fe5bf40a7e984fe2adce0e2365f758dabb50e4e1576f85e8fe
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/4180-29-0x0000010702E80000-0x0000010702F80000-memory.dmp
        Download

        memory/4180-210-0x00000107057C0000-0x00000107059A3000-memory.dmp
        Download

        memory/4180-54-0x0000010705D60000-0x0000010705E60000-memory.dmp
        Download

        memory/4180-53-0x0000010705B60000-0x0000010705B80000-memory.dmp
        Download

        memory/4180-84-0x00000107180C0000-0x00000107180E0000-memory.dmp
        Download

        memory/4180-60-0x0000010705C60000-0x0000010705C80000-memory.dmp
        Download

        memory/4584-27-0x0000000000500000-0x0000000000510000-memory.dmp
        Download

        memory/4584-21-0x00000000021E0000-0x00000000021E6000-memory.dmp
        Download

        memory/4584-19-0x0000000000500000-0x0000000000510000-memory.dmp
        Download

        memory/5316-0-0x0000000000500000-0x0000000000510000-memory.dmp
        Download

        memory/5316-4-0x0000000000750000-0x0000000000756000-memory.dmp
        Download

        memory/5316-3-0x0000000000500000-0x0000000000510000-memory.dmp
        Download

        memory/5316-2-0x0000000000720000-0x0000000000726000-memory.dmp
        Download

        memory/5316-1-0x0000000000504000-0x0000000000505000-memory.dmp
        Download