Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    03/06/2026, 03:45

General

  • Target
    2026-06-03_925a193b124bae3dad0166e2dbeaf8d7_cryptolocker_elex.exe
  • Size 40KB
  • Sample260603-ea158aax6j
  • SHA256 424072f1da681d5d17e6928f4be9aefb77868f940f11e35cbf9ba69c286bd0bd
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Custom signature
    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\2026-06-03_925a193b124bae3dad0166e2dbeaf8d7_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-06-03_925a193b124bae3dad0166e2dbeaf8d7_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2632
    • 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:3112

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        hasfj.exe

        • Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
        • Size 40KB
        • SHA256 f29d5ce45f8082878969fe7424b2709a67e2d2bd3879fc919419a6595f7defac
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2632-0-0x0000000008004000-0x0000000008005000-memory.dmp

        memory/2632-1-0x00000000021A0000-0x00000000021A6000-memory.dmp

        memory/2632-2-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/2632-3-0x0000000003110000-0x0000000003116000-memory.dmp

        memory/3112-17-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/3112-19-0x0000000002210000-0x0000000002216000-memory.dmp

        memory/3112-25-0x0000000008000000-0x000000000800A000-memory.dmp