Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    16/04/2026, 01:44

General

  • Target
    2026-04-16_3d4d4623efaea5fca06efa733751b7cb_cryptolocker_elex.exe
  • Size 43KB
  • Sample260416-b54caady7l
  • SHA256 90eb0fb7546f94794a0f5b02d99224f2aed7baf888ae4100741bbb39cb2bcc1b
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 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\2026-04-16_3d4d4623efaea5fca06efa733751b7cb_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-16_3d4d4623efaea5fca06efa733751b7cb_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2244
    • 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:4972

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 44KB
        • SHA256 a81e4bfe8abeffd302cffb511078bdc38c942e7c24e8ab8be8ddd49256fcd6bb
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2244-0-0x0000000008004000-0x0000000008005000-memory.dmp

        memory/2244-1-0x0000000002640000-0x0000000002646000-memory.dmp

        memory/2244-3-0x0000000002E70000-0x0000000002E76000-memory.dmp

        memory/2244-2-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/4972-17-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/4972-19-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/4972-20-0x00000000021A0000-0x00000000021A6000-memory.dmp