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Analysis

  • max time kernel
    150s
  • max time network
    117s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    08/05/2024, 06:45

General

  • Target

    fcd18c2b1fc9f9c20eeb803658b637a0_NEIKI.exe

  • Size

    196KB

  • MD5

    fcd18c2b1fc9f9c20eeb803658b637a0

  • SHA1

    20dcd1d6bf3265aa60ac9c05ade37c9451a951c8

  • SHA256

    c72ba1528ff97f3504b92bf7006d5e6326b306afba96139fa1130d49abd74de9

  • SHA512

    107748c520ed4e241981557e6a5f8c565e4ad20d9f0a8f7d0de208c40c36a38e691d13fb051dde46b32388e655269c2093e82296d7f0f70e7d2bd776d052ec55

  • SSDEEP

    1536:PVqk3NUhJtOaZk1GDGe0Pdb+d6DiUYot00gwX:0VLXzDDypy6DiUru0gk

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 52 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\fcd18c2b1fc9f9c20eeb803658b637a0_NEIKI.exe
    "C:\Users\Admin\AppData\Local\Temp\fcd18c2b1fc9f9c20eeb803658b637a0_NEIKI.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2836
    • C:\Users\Admin\riuifu.exe
      "C:\Users\Admin\riuifu.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
      • Suspicious use of WriteProcessMemory
      PID:2520

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\riuifu.exe

    Filesize

    196KB

    MD5

    4d31fc8789e3cedce3d88f6e9947d3b4

    SHA1

    fbb427fce808e899e1ed61e1e5a5a028b282db38

    SHA256

    04ec113fb53148bd9e64660d83b2db5c9578236d791ecfc88519e842e4d01034

    SHA512

    929e6f3e1b402517be683b7ef91abc9dbb7db829675d75c3802cbfcf3c1ed338491e7c63343ad179e44c7b1de1bd27201b8d4e291d41bc9f439963fc8417c27f