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Analysis

  • max time kernel
    155s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/10/2022, 20:36

General

  • Target

    c51ad8d5313529c86b30bd3146dac4b278224ad2d492339ebacdd23bd27c4332.exe

  • Size

    228KB

  • MD5

    76c15054b849efeda1044138224fb8e9

  • SHA1

    58c0e9c01a0830ee0d15c17e03d4067304d9c419

  • SHA256

    c51ad8d5313529c86b30bd3146dac4b278224ad2d492339ebacdd23bd27c4332

  • SHA512

    0fef7c212d40274e12a28a51695ba38bfa73f7126918bfb7172e4c63ed91de5d338999bba11f07723cf15bf3f6c6eacf687f64ed3e55fc573203a254ba56f520

  • SSDEEP

    3072:GNBMPJ4T2vaHfQmuKM7U6L9sxsHrl3B0mhQjUqvG44oQZiEIx:SBy4Sva/QVK+SxsHrl3B0mhPq+cW

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 54 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c51ad8d5313529c86b30bd3146dac4b278224ad2d492339ebacdd23bd27c4332.exe
    "C:\Users\Admin\AppData\Local\Temp\c51ad8d5313529c86b30bd3146dac4b278224ad2d492339ebacdd23bd27c4332.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4204
    • C:\Users\Admin\beoyio.exe
      "C:\Users\Admin\beoyio.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:5048

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\beoyio.exe

    Filesize

    228KB

    MD5

    730179341d080b1006493d909849f7f9

    SHA1

    0d87609e6c4639dec17fd4e166f95f9bfea85a1b

    SHA256

    21c614e6b299655f8539d124b75ca85e474c33eed316194a78eba5858ea6690b

    SHA512

    75c7b1e13617d5843b067864519b083d3dfa9b0c27d0fef0f863c854995fd08f465593021c2f18c4cfe027223191d610a4ee14ae1109cefefe979a13ce3c25fa

  • C:\Users\Admin\beoyio.exe

    Filesize

    228KB

    MD5

    730179341d080b1006493d909849f7f9

    SHA1

    0d87609e6c4639dec17fd4e166f95f9bfea85a1b

    SHA256

    21c614e6b299655f8539d124b75ca85e474c33eed316194a78eba5858ea6690b

    SHA512

    75c7b1e13617d5843b067864519b083d3dfa9b0c27d0fef0f863c854995fd08f465593021c2f18c4cfe027223191d610a4ee14ae1109cefefe979a13ce3c25fa

  • memory/4204-135-0x0000000000400000-0x0000000000439000-memory.dmp

    Filesize

    228KB

  • memory/4204-144-0x0000000000400000-0x0000000000439000-memory.dmp

    Filesize

    228KB

  • memory/5048-143-0x0000000000400000-0x0000000000439000-memory.dmp

    Filesize

    228KB

  • memory/5048-145-0x0000000000400000-0x0000000000439000-memory.dmp

    Filesize

    228KB