Analysis

  • max time kernel
    2s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    20/04/2026, 15:32

Errors

Reason
Machine shutdown

General

  • Target
    MasonMBR.exe
  • Size 93KB
  • Sample260420-sypc8aas7s
  • SHA256 190e70e1df7f1b7b526c557c0ef0da3b67d3da130a56dc52666a65266b8146af
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • 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 1 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\MasonMBR.exe
    "C:\Users\Admin\AppData\Local\Temp\MasonMBR.exe"
    1⤵
    • Writes to the Master Boot Record (MBR)
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:1868

Network

        MITRE ATT&CK Enterprise v16

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