Analysis

  • max time kernel
    139s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    31/05/2024, 20:34

General

  • Target

    2024-05-31_7c29b884158846f244b1b881b857fc02_cryptolocker.exe

  • Size

    39KB

  • MD5

    7c29b884158846f244b1b881b857fc02

  • SHA1

    34459857ef81be211c297fe4f2a22170465fe57b

  • SHA256

    af9d90ed3fb7ec403a278daf1049543cc1613b6ba445400cc9b52cd34d08d60d

  • SHA512

    2aeb9a3fb9838f0b8aab52e782e9b3d6f2e3804da7251f480fb0b359d6b5e8e4ae5f0d8321cf4dfc2bd07d29575d1c8ae26e68c05d626e4de752fa4809f8f194

  • SSDEEP

    768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wm0WZyx:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XP

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\2024-05-31_7c29b884158846f244b1b881b857fc02_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-31_7c29b884158846f244b1b881b857fc02_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2880
    • 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

          774c8dfe82f73e7da83944c5add84b48

          SHA1

          9fbfc370e59bb623eb07d209fabba717980b923e

          SHA256

          327db3342b69f991d9e5f2e5b6ad315939b076dffebd1b6f224924e4eb688441

          SHA512

          c95095a037b3dea621aa252d92fa59d003e8ab6e73bf089fe405c1e10e35d934f478e1e6faf7e197cd052cc97239e96bf1e64487b69b54bfcb2f9617efac37cf

        • memory/2880-0-0x0000000000230000-0x0000000000236000-memory.dmp

          Filesize

          24KB

        • memory/2880-1-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/2880-8-0x0000000000230000-0x0000000000236000-memory.dmp

          Filesize

          24KB

        • memory/3048-23-0x00000000001C0000-0x00000000001C6000-memory.dmp

          Filesize

          24KB