Analysis

  • max time kernel
    119s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-09-2024 06:35

General

  • Target

    733e2d78201fbdbd6a96e31a5091418a7797419d77d4ccf42063cf7813d9bde8N.exe

  • Size

    96KB

  • MD5

    44e87dbff5f33d45f1ba266674a13c60

  • SHA1

    3fce5c5af1f3c655a5488929cc762c105be87082

  • SHA256

    733e2d78201fbdbd6a96e31a5091418a7797419d77d4ccf42063cf7813d9bde8

  • SHA512

    66bbb7df9ef26c301297017f4499326aaf55bdbac2ff3fd24205815a17534b6a2130216e957428230476c65ec92c3695db8812611a89f15f4daacfd522eb4afb

  • SSDEEP

    1536:f7UEg52O9tyVQO8P8ych6Vwjj3RJNEo/knRzdnynE7RldNEP8lijOe/NIjP:f4E/OelychlzR3Ek65Rldq/CP

Malware Config

Signatures

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

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

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 51 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\733e2d78201fbdbd6a96e31a5091418a7797419d77d4ccf42063cf7813d9bde8N.exe
    "C:\Users\Admin\AppData\Local\Temp\733e2d78201fbdbd6a96e31a5091418a7797419d77d4ccf42063cf7813d9bde8N.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4540
    • C:\Users\Admin\mbyioc.exe
      "C:\Users\Admin\mbyioc.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:5088

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\mbyioc.exe

    Filesize

    96KB

    MD5

    ad5f96aebda1ce74b477b3fcb6813b1d

    SHA1

    87741a94d8b4f91abcba0cb794b48ad9dfd0c5dc

    SHA256

    4b1ef149d66b8f00e841f2d79aae292ae79e027e871b8a744649d0e573abb531

    SHA512

    a491c8fc34eb90632966755e9d598232c6805a88e0a57a028fd5703abc4ce4736ecf01ed35691c040b78111d1d5bd2da29728dd755bb4754f1cd6a3b03fc5865