Analysis

  • max time kernel
    119s
  • max time network
    103s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/09/2024, 10:04

General

  • Target

    a262c6f074c9838bfae7ce1e9116ccc0N.exe

  • Size

    236KB

  • MD5

    a262c6f074c9838bfae7ce1e9116ccc0

  • SHA1

    3e2e578c6782db81be1bc648af8391b3985194ac

  • SHA256

    f881aaf0b1dd4086be90d710293d86ce06edec5d33300662995ab23e57b5347f

  • SHA512

    537306b8d5eb83dec6474981c198e62086d47103dfe55099e94c16df9029b6eb916b3bf5032da4956d2451f18f3b8bec5fee5e1bf16431e8c13695cccaf54e31

  • SSDEEP

    6144:L24hiRIc+WCNmWK/fObT/bGiPsiet1yXsi+78wkZIx9rM+iOLtC1Et0P3tM2g2a:Soc+WCNmWK/fObT/bGiPsieAwkZIx9rT

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 50 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\a262c6f074c9838bfae7ce1e9116ccc0N.exe
    "C:\Users\Admin\AppData\Local\Temp\a262c6f074c9838bfae7ce1e9116ccc0N.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:1544
    • C:\Users\Admin\baeuyu.exe
      "C:\Users\Admin\baeuyu.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:2240

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\baeuyu.exe

          Filesize

          236KB

          MD5

          f32e7e11251df2ceefc20463515753d2

          SHA1

          ebd5779b02eaff336e0eb16d4354d7d0fe8c0727

          SHA256

          0d4fd70884e7516afc77b0fdc906d6b95b619646cc2c54e376f44d28c25025ee

          SHA512

          c0667bb6ce44a9f5305e18513f0d2f3eae43a1587e389f6d8cfec0c409928244b37665b30e44949262f6f13a88cf46f2ae32396bcd632918eb2f34703639c2bf