Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/05/2024, 15:45

General

  • Target

    2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker.exe

  • Size

    45KB

  • MD5

    672195f5397ff7237fd9837d48404695

  • SHA1

    dab1c18ae39aa8330846c19250394122d1e46c94

  • SHA256

    0052586317d6b2cbdc0ba65c9bbe5c95202847f204f83b1f18e1105aaa28f263

  • SHA512

    1e1914c4580468e232f85d861e70fc4cf2f49317febf84f586d173c0d5eb1e78263227f32e1780427c2f0fd2ec7b633ec8ae404203019dfd7fa94fb9222f062f

  • SSDEEP

    384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUIDOR4V:bm74zYcgT/Ekn0ryfjvZ

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4292
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:3108

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\hasfj.exe

          Filesize

          45KB

          MD5

          a80fd7bcf44fd4baadeb854b0d3e94fc

          SHA1

          9ee10e60fedc1c111ca74d154b71ad500c640e33

          SHA256

          bfb9c4c9e329c4939f1887e22fb21d5b41105dcab93c3b089fcd33780dd30867

          SHA512

          74f33c1a33b734f56e0551f74990a02f0f4ff64e5a739ed055123cbef90e6e83e3d47d5d9faf694bed1c3e84f22c7c5e172a61878ef8a63ecdffb0f4c6bab99f

        • memory/3108-19-0x0000000003010000-0x0000000003016000-memory.dmp

          Filesize

          24KB

        • memory/3108-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

          Filesize

          24KB

        • memory/3108-26-0x0000000008000000-0x000000000800D000-memory.dmp

          Filesize

          52KB

        • memory/4292-0-0x0000000008000000-0x000000000800D000-memory.dmp

          Filesize

          52KB

        • memory/4292-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

          Filesize

          24KB

        • memory/4292-2-0x0000000000720000-0x0000000000726000-memory.dmp

          Filesize

          24KB

        • memory/4292-9-0x00000000006F0000-0x00000000006F6000-memory.dmp

          Filesize

          24KB

        • memory/4292-17-0x0000000008000000-0x000000000800D000-memory.dmp

          Filesize

          52KB