Analysis

  • user interaction
    yes
  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    25/09/2026, 23:35

General

  • Target
    derkweeb.exe
  • Size 48KB
  • Sample260925-3ld2tsyhpc
  • SHA256 708a5e3a32078e50a4810805cae53b3f9f0dfc71d4bda43ba7fed3ccc32ddd8c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • neptunerat

C2
  • 36.tcp.cpolar.top:14806

Attributes
  • filename

    USB.exe

  • group

    MasonGroup

  • key

    mU4KY4UuwfuwpgJh

  • rat_name

    MasonRAT

Signatures

  • Family: NeptuneRAT, MasonRAT

    NeptuneRAT aka MasonRAT is a trojan written in C#.

  • Detects NeptuneRAT stealer 1 IoCs
  • Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\derkweeb.exe
    "C:\Users\Admin\AppData\Local\Temp\derkweeb.exe"
    1⤵
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious use of AdjustPrivilegeToken
    PID:3468

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/3468-0-0x0000000000EC0000-0x0000000000ED2000-memory.dmp

        memory/3468-1-0x0000000002FF0000-0x0000000003000000-memory.dmp

        memory/3468-2-0x0000000002FF0000-0x0000000003000000-memory.dmp