Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/08/2026, 08:16

General

  • Target
    2026-08-21_aca63cc83e5691b4eebd54d3c88fc822_cryptolocker_elex.exe
  • Size 4.5MB
  • Sample260822-j6a15asera
  • SHA256 98feb88a4fc1dee19e9ca6907685032bc3c49ddc660249b1fddbc98da4193bc1
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detects executables built or packed with MPress PE compressor 1 IoCs
  • Executes dropped EXE 1 IoCs
  • 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.

  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-21_aca63cc83e5691b4eebd54d3c88fc822_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-21_aca63cc83e5691b4eebd54d3c88fc822_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5408
    • 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:6992

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        hasfj.exe

        • Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
        • Size 4.5MB
        • SHA256 2d5432b3eac2d4ca1b07d8cd6dea95ecf36d95922bc33513836b9dec7e61fe2c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/5408-0-0x0000000008004000-0x0000000008005000-memory.dmp

        memory/5408-1-0x00000000021F0000-0x00000000021F6000-memory.dmp

        memory/5408-2-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/5408-3-0x00000000022B0000-0x00000000022B6000-memory.dmp

        memory/6992-18-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/6992-26-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/6992-20-0x0000000002110000-0x0000000002116000-memory.dmp