Analysis

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

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/06/2024, 04:46

General

  • Target

    2024-06-02_c1b4053dba436cfc24d4dea6372a02d0_cryptolocker.exe

  • Size

    45KB

  • MD5

    c1b4053dba436cfc24d4dea6372a02d0

  • SHA1

    9c7a5f3c51fe728ba6ccb5af3004b7165a28d39f

  • SHA256

    3866e035f11f8eb79259ff21752b6ee073cc6e38547562864601ef2065a841cf

  • SHA512

    424bf97bf0dac6718b5f240bf797611555f598ba3d86b3970025d793eceb978e8c06a0b81bde558c9457b5371fe45c2b6bdc012b709bd66734efedd0d2b94972

  • SSDEEP

    384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUpaSwIfQL:bm74zYcgT/Ekn0ryfjR1IfQL

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\2024-06-02_c1b4053dba436cfc24d4dea6372a02d0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_c1b4053dba436cfc24d4dea6372a02d0_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1892
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:2080

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          45KB

          MD5

          4cce32a8eabfda6a9f8e5ac158488fae

          SHA1

          4b69be8019b92d2f7e9df19fc6ea05767de2634c

          SHA256

          3a13fae38b8af94a79d69cac9f992672f5c2466a6839c00f42a7b84a0aebbec1

          SHA512

          770ac8b816cc635f7953a22cc6c6a2b9dee872357b3ccc2dc4655507a4accec3c9a6941b427469dab1051a6448d1a1a3d0ad6d745e7ca911b8be52debebec84d

        • memory/1892-0-0x0000000008000000-0x000000000800D000-memory.dmp

          Filesize

          52KB

        • memory/1892-1-0x0000000002250000-0x0000000002256000-memory.dmp

          Filesize

          24KB

        • memory/1892-2-0x0000000003150000-0x0000000003156000-memory.dmp

          Filesize

          24KB

        • memory/1892-9-0x0000000002250000-0x0000000002256000-memory.dmp

          Filesize

          24KB

        • memory/1892-17-0x0000000008000000-0x000000000800D000-memory.dmp

          Filesize

          52KB

        • memory/2080-19-0x0000000003010000-0x0000000003016000-memory.dmp

          Filesize

          24KB

        • memory/2080-25-0x0000000002210000-0x0000000002216000-memory.dmp

          Filesize

          24KB

        • memory/2080-26-0x0000000008000000-0x000000000800D000-memory.dmp

          Filesize

          52KB