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Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    04/06/2024, 21:53

General

  • Target

    2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_cryptolocker.exe

  • Size

    39KB

  • MD5

    fcfaf6743126f37a04d25ca4b2f8d16c

  • SHA1

    d1941a165fd1f59c1ed8d99cd8387ac8fa91e1bc

  • SHA256

    4abd3cd8adba74f2452a767d30b33f84e5caf144d86b1df972d640668f37993a

  • SHA512

    e79e7c19f22619c1728678993b326aff9a236e24af126c5fa663e5c2d4e0495e647d604a304e05f9fe008f2598229558b4d8ccef7e9996596da8887ade301d7d

  • SSDEEP

    768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wm0WZy6: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\2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:844
    • 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:3048

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    c216f00d44095e019b6d8a63c2d6ce53

    SHA1

    3a5745f6fae9a9b4eecca98b3a810db619b0ea08

    SHA256

    29a39a18602e5eac97a8dfb1c9ba76256c3e35f2709971cd46dae0b51c9d314c

    SHA512

    dfef0c7cc411c39b1cd01dcb1b9a24e43b37fd1b9a546bfa06bb6b1ed057947e298d80de799f13650fc9b6168347a73be7d19a0402a2d217370afe63b6331927

  • memory/844-0-0x0000000000330000-0x0000000000336000-memory.dmp

    Filesize

    24KB

  • memory/844-8-0x0000000000330000-0x0000000000336000-memory.dmp

    Filesize

    24KB

  • memory/844-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/3048-23-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB