Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/08/2026, 04:12

General

  • Target
    2026-08-09_2111433101261d9b9a71fa08e674214d_cryptolocker_elex.exe
  • Size 36KB
  • Sample260809-est5mahk5t
  • SHA256 754d5424e852aa3b616e6f24f2db77802ddbd3344b61e921a043bfc9d7156ed7
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Custom signature
    Detection of CryptoLocker Variants 5 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\2026-08-09_2111433101261d9b9a71fa08e674214d_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-09_2111433101261d9b9a71fa08e674214d_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1268
    • 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:5056

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 36KB
        • SHA256 4350d4c75e3d2f89c03ed0a0ffa6e881090b75f1e5ec124ac9e6383133fda3e4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1268-0-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/1268-1-0x0000000008004000-0x0000000008005000-memory.dmp

        memory/1268-2-0x0000000002280000-0x0000000002286000-memory.dmp

        memory/1268-3-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/1268-5-0x00000000022B0000-0x00000000022B6000-memory.dmp

        memory/5056-19-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/5056-21-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/5056-23-0x00000000021A0000-0x00000000021A6000-memory.dmp