Analysis

  • max time kernel
    119s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 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⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1400
    • C:\Users\Admin\AppData\Local\Temp\demka.exe
      "C:\Users\Admin\AppData\Local\Temp\demka.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      PID:2520

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          33KB

          MD5

          28ba00f78909d081a7682f0a09d08416

          SHA1

          7bcbb05cdd23e10a49ad5e0084b98faafea658a5

          SHA256

          bf8faf6570d9d6b8c28a69b24fbf8282ef01ef67dd7bf5508581316dc36e2b1f

          SHA512

          a08cfedff84e737f317a71dee8a782d2c7835b06da22e454cb2277c749d62ea0cee0a0848e25dd232f8048a27217475b232e2a6228199b95659ba62cace31c3e

        • memory/1400-8-0x0000000000360000-0x0000000000366000-memory.dmp

          Filesize

          24KB

        • memory/1400-1-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/1400-0-0x0000000000360000-0x0000000000366000-memory.dmp

          Filesize

          24KB

        • memory/2520-23-0x0000000000260000-0x0000000000266000-memory.dmp

          Filesize

          24KB