Overview

overview

10

Static

static

10

2026-07-21...ve.exe

windows10-2004-x64

10

2026-07-21...ve.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    2026-07-21_baa7df67c94f8796b5c117d4dc35036c_hive
  • Size 1.5MB
  • Sample260721-t82a7scf47
  • SHA256 a37b15ca67737f7299b73c135ebe2c2e43851a1d31b645087c9f201dd9e5c1b5
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
donutloaderneptuneratloadertrojanupx

Malware Config

Extracted

Family

  • neptunerat

Attributes
  • filename

    USB.exe

  • group

    MasonGroup

  • key

    SV51qX80LyBSJf0m

  • localhost

    127.0.0.1:24459

  • rat_name

    MasonRAT

Targets

    • Target
      2026-07-21_baa7df67c94f8796b5c117d4dc35036c_hive
    • Size 1.5MB
    • SHA256 a37b15ca67737f7299b73c135ebe2c2e43851a1d31b645087c9f201dd9e5c1b5
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    donutloaderneptuneratloadertrojanupx

    • Detects DonutLoader

      loader

    • Detects NeptuneRAT stealer

    • Family: DonutLoader

      DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

      loaderdonutloader

    • Family: NeptuneRAT, MasonRAT

      NeptuneRAT aka MasonRAT is a trojan written in C#.

      trojanneptunerat

    • Detects Windows executables referencing non-Windows User-Agents

    • UPX dump on OEP (original entry point)

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx
    behavioral1behavioral2

MITRE ATT&CK Matrix

Tasks