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Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    05/04/2024, 11:52

General

  • Target

    2024-04-05_636da7fc96f802082b1abc05c67ebb2e_cryptolocker.exe

  • Size

    44KB

  • MD5

    636da7fc96f802082b1abc05c67ebb2e

  • SHA1

    576c3f4e17788230781d3cb1e4517f32fb1fec5b

  • SHA256

    d527959052d10b5b0b1d3424c023daaa14a714d3959e7286de0c83c8a705ffd9

  • SHA512

    69f59199ff94a990b7adcdb5fe17ffd6ea04919db12fd4ff013e4b0b2e8d18dfc8f7cfc3b9948c8b43a93c13add707cff421e8d9d93b6db010de003033353e0c

  • SSDEEP

    768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kx5:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xw

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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).

  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-05_636da7fc96f802082b1abc05c67ebb2e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-05_636da7fc96f802082b1abc05c67ebb2e_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1440
    • C:\Users\Admin\AppData\Local\Temp\hurok.exe
      "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of UnmapMainImage
      PID:2700

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    45KB

    MD5

    8bb470b348af257a1bc208e90795c454

    SHA1

    85c962d3e09df9a47c5db17378c4b4fdd32ce26d

    SHA256

    04a56d69488642c8b880628baa222bbfa82171d519bc06c3fdf153e3c6fb6ac3

    SHA512

    c21d737e225390c2a51243f3702da1a70f8e29a243eb8bdafaa4573e074d56af4f50f2164745d40bd80b4f8a67d62dc6583b36be73ea74137f2d3b639bc96556

  • memory/1440-0-0x00000000003C0000-0x00000000003C6000-memory.dmp

    Filesize

    24KB

  • memory/1440-2-0x00000000003C0000-0x00000000003C6000-memory.dmp

    Filesize

    24KB

  • memory/1440-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/2700-16-0x0000000000230000-0x0000000000236000-memory.dmp

    Filesize

    24KB