Resubmissions

09/03/2025, 01:58

250309-cdv29swybs 10

08/03/2025, 06:55

250308-hp35xatjt9 10

08/03/2025, 04:53

250308-fh1ebssky5 10

Analysis

  • max time kernel
    149s
  • max time network
    161s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250217-en
  • resource tags

    arch:x64arch:x86image:win11-20250217-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    08/03/2025, 06:55

General

  • Target

    My-Skidded-malwares-main/MarisaMBR.exe

  • Size

    585KB

  • MD5

    6c21116078b7a90e7cf1492805a548dc

  • SHA1

    17c7bc8d17b42b258557e23ae7b0b68ba732c5a0

  • SHA256

    88b3be30c450d7cf75bbbae7c5367bb230b8c343b8d8fe02eddf9f96c82f2496

  • SHA512

    b6e756f480f219e636ee5d55a78c5e1ccd847ce9fa8a73f5e0209ecc4bfe8b8e4f129c1ac413f49990d7bce18817ea60aedd6fde9be430d7a34795baaeee8447

  • SSDEEP

    12288:1Dbpr2trUqUeBhfUHzXC+cHJ8XeSb++MnaTmv0:1DdsrsG5UHulCXR+xaTm

Malware Config

Signatures

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • 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.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\My-Skidded-malwares-main\MarisaMBR.exe
    "C:\Users\Admin\AppData\Local\Temp\My-Skidded-malwares-main\MarisaMBR.exe"
    1⤵
    • Adds Run key to start application
    • Writes to the Master Boot Record (MBR)
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4308
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks.exe /Create /TN CustomMBR /ru SYSTEM /SC ONSTART /TR "C:\Users\Admin\AppData\Local\Temp\My-Skidded-malwares-main\MarisaMBR.exe -BypassWarning"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4260

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/4308-0-0x0000000002560000-0x0000000002561000-memory.dmp

    Filesize

    4KB

  • memory/4308-1-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB