Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/06/2024, 00:52

General

  • Target

    2024-06-02_d637fda51f8daec053be94aa950b4164_cryptolocker.exe

  • Size

    44KB

  • MD5

    d637fda51f8daec053be94aa950b4164

  • SHA1

    78a67ea5295edf7324798bd8484360d35c3b70f6

  • SHA256

    7ae98fdc18c70f3068057a52b7e72e74617c263f2f1fc57a889cc149540f9e9f

  • SHA512

    6a0a60749cf043d77f308e60222c2ca2f2a97baa48da87fb6e2e3ad41830e94a9c527cccd3f52989fd8bab69ba8589d0b29b3ce79308828310d56573182d151c

  • SSDEEP

    384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUpEui0UX:bm74zYcgT/Ekn0ryfjLuYX

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_d637fda51f8daec053be94aa950b4164_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_d637fda51f8daec053be94aa950b4164_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3368
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:3980

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          45KB

          MD5

          c42366fe7514fff2ea84ae61eaba2d1d

          SHA1

          fbd78aeb838da4450602ff896748f26952e3cd52

          SHA256

          2115928089ee463e18a025016ec21a151526c8ee0d11e193a8f0b7de5a832e8b

          SHA512

          007859541ac72db95981767c15bcfb23cdebd60d498b5a50be36ac0e305db3396d7b951ad51e85e6bd7b45f11b2726949c0089dfbfc045d319cfc1b5012b9055

        • memory/3368-0-0x0000000008000000-0x000000000800D000-memory.dmp

          Filesize

          52KB

        • memory/3368-1-0x0000000002160000-0x0000000002166000-memory.dmp

          Filesize

          24KB

        • memory/3368-2-0x0000000002160000-0x0000000002166000-memory.dmp

          Filesize

          24KB

        • memory/3368-3-0x0000000002190000-0x0000000002196000-memory.dmp

          Filesize

          24KB

        • memory/3368-17-0x0000000008000000-0x000000000800D000-memory.dmp

          Filesize

          52KB

        • memory/3980-19-0x0000000003150000-0x0000000003156000-memory.dmp

          Filesize

          24KB

        • memory/3980-25-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

          Filesize

          24KB

        • memory/3980-26-0x0000000008000000-0x000000000800D000-memory.dmp

          Filesize

          52KB