Overview

overview

10

Static

static

10

2026-06-26...ex.exe

windows10-2004-x64

9

2026-06-26...ex.exe

windows11-ltsc_2024-x64

9

Analysis

  • max time kernel
    150s
  • 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
    29/06/2026, 15:54

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General

  • Target
    2026-06-26_56a766ed88a0b2be07dc0de5fb32872c_cryptolocker_elex.exe
  • Size 43KB
  • Sample260629-tcesbshs21
  • SHA256 78944c5a397d5a501711850751e4f6ecfb86959063eb7aeb63c9b145cf24a27e
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
adwarediscoverypersistencespyware

Malware Config

Signatures

  • Detection of CryptoLocker Variants 3 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 35 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of FindShellTrayWindow 53 IoCs
  • Suspicious use of SendNotifyMessage 41 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-06-26_56a766ed88a0b2be07dc0de5fb32872c_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-06-26_56a766ed88a0b2be07dc0de5fb32872c_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5908
    • C:\Users\Admin\AppData\Local\Temp\rewok.exe
      "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4648
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:2896
    • 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:6116
  • 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:2120
  • 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:2080

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

        rewok.exe
        • Path C:\Users\Admin\AppData\Local\Temp\rewok.exe
        • Size 43KB
        • SHA256 dd3f8b1937a786d4ed8aad2684c52507388463fec7858261396960f33f11c42b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/2120-49-0x0000020782E60000-0x0000020782F60000-memory.dmp
        Download

        memory/2120-81-0x00000207941E0000-0x0000020794200000-memory.dmp
        Download

        memory/2120-221-0x0000020796A30000-0x0000020796C13000-memory.dmp
        Download

        memory/2120-37-0x00000207801E0000-0x00000207802E0000-memory.dmp
        Download

        memory/2120-47-0x0000020782900000-0x0000020782920000-memory.dmp
        Download

        memory/2120-67-0x0000020782C60000-0x0000020782C80000-memory.dmp
        Download

        memory/4648-31-0x0000000000400000-0x0000000000408000-memory.dmp
        Download

        memory/4648-29-0x0000000000400000-0x0000000000408000-memory.dmp
        Download

        memory/4648-23-0x0000000000400000-0x0000000000406000-memory.dmp
        Download

        memory/4648-22-0x0000000000400000-0x0000000000408000-memory.dmp
        Download

        memory/4648-20-0x0000000000400000-0x0000000000408000-memory.dmp
        Download

        memory/5908-3-0x0000000000400000-0x0000000000406000-memory.dmp
        Download

        memory/5908-0-0x0000000000404000-0x0000000000405000-memory.dmp
        Download

        memory/5908-1-0x0000000000680000-0x0000000000686000-memory.dmp
        Download

        memory/5908-2-0x0000000000400000-0x0000000000408000-memory.dmp
        Download