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Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    05/04/2024, 19:44

General

  • Target

    2024-04-05_d9b30c92f2c7f92a666c702d572e6a73_cryptolocker.exe

  • Size

    42KB

  • MD5

    d9b30c92f2c7f92a666c702d572e6a73

  • SHA1

    1d804c3d966caa28db785c08132494d5b13553cc

  • SHA256

    49c523fcbd9807019b7341e8adf9968bd40821a9170c9b87427c2f24a47655c2

  • SHA512

    4fb9304b4aadfe05bf3402b8343f3ea49d71f3b575064a5bc97802391f35f2d7933c4d11e92b9555cd4cef89ca92ce98babf02f9442ee44c48057bedbac63bdb

  • SSDEEP

    768:bAvJCYOOvbRPDEgXrNekd7l94i3p+OMD6:bAvJCF+RQgJeab4sxR

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\2024-04-05_d9b30c92f2c7f92a666c702d572e6a73_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-05_d9b30c92f2c7f92a666c702d572e6a73_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2340
    • 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:3052

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    42KB

    MD5

    b21941ee190c52f77ee830bc21cd2d4c

    SHA1

    fcb027dd7cd8c42fc13dd6eabf9903c0c32e7503

    SHA256

    8009709c6beb9cbc47c08ca73d9753fe62b2fbf150b7aac22427bcf24efb8f5b

    SHA512

    757a85b1fb74c954da15c09154f7418a431c572299b9274d042c928853b65acb251b97e58a5b522ce2c44831b9aa5f58384785c325d9061c0af2edd45ecb0756

  • memory/2340-0-0x00000000003F0000-0x00000000003F6000-memory.dmp

    Filesize

    24KB

  • memory/2340-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/2340-8-0x00000000003F0000-0x00000000003F6000-memory.dmp

    Filesize

    24KB

  • memory/3052-21-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB