Analysis

  • max time kernel
    149s
  • 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
    26/05/2024, 03:48

General

  • Target

    2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe

  • Size

    32KB

  • MD5

    a3985fd0560a62f1500dc3c0b1d1d339

  • SHA1

    cb005728a78414eb840198ce3ea378ff502d24c1

  • SHA256

    7c5dfd8a6850d5ffc00cdefde5485c871468941459b8d45a73808a7bfcfa2401

  • SHA512

    80f5b836de1e3c9ff9d1505a8f7a35080d85166a29a8579891c6fb15d1bfd7394f6d2b1d54eae3f1cde805cbd6c0a52c28cb34ebf7fab02c36980494b6e517fe

  • SSDEEP

    384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzo6cJ3v7R:bAvJCYOOvbRPDEgXRcJF

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Checks computer location settings 2 TTPs 2 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\2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4776
    • C:\Users\Admin\AppData\Local\Temp\demka.exe
      "C:\Users\Admin\AppData\Local\Temp\demka.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:3024

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          33KB

          MD5

          28ba00f78909d081a7682f0a09d08416

          SHA1

          7bcbb05cdd23e10a49ad5e0084b98faafea658a5

          SHA256

          bf8faf6570d9d6b8c28a69b24fbf8282ef01ef67dd7bf5508581316dc36e2b1f

          SHA512

          a08cfedff84e737f317a71dee8a782d2c7835b06da22e454cb2277c749d62ea0cee0a0848e25dd232f8048a27217475b232e2a6228199b95659ba62cace31c3e

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

          Filesize

          186B

          MD5

          5713be59382522e709b67fcc47577b2e

          SHA1

          97f3e8e234ecde5ef9d04a4f03d131d64f0676c8

          SHA256

          b46c87dc12d0d814b0520752f63d145c0766bc2731b1fe3255fd410457003ada

          SHA512

          7e699fdc6ac3d354b7ea7d5ae087676ebe33af5c9d3de042112b0199090f24bdd65714b4fdaef693db78504a03b1c795d2f8be1796533ea927d68544a4fd2a30

        • memory/3024-25-0x00000000006F0000-0x00000000006F6000-memory.dmp

          Filesize

          24KB

        • memory/4776-0-0x0000000002120000-0x0000000002126000-memory.dmp

          Filesize

          24KB

        • memory/4776-1-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/4776-2-0x0000000002120000-0x0000000002126000-memory.dmp

          Filesize

          24KB