Overview

overview

10

Static

static

10

MasonClient.exe

windows10-2004-x64

10

MasonClient.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    MasonClient.exe
  • Size 49KB
  • Sample260711-erba5adv71
  • SHA256 f42fa5267574ebea8a0d41a02b424b9499a8e9ba79f2eca64e74107279188c2e
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
neptuneratransomwaretrojan

Malware Config

Extracted

Family

  • neptunerat

C2

  • efk123-56274.portmap.host:56274

Targets

    • Target
      MasonClient.exe
    • Size 49KB
    • SHA256 f42fa5267574ebea8a0d41a02b424b9499a8e9ba79f2eca64e74107279188c2e
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    neptuneratransomwaretrojan

    • Detects NeptuneRAT stealer

    • Family: NeptuneRAT, MasonRAT

      NeptuneRAT aka MasonRAT is a trojan written in C#.

      trojanneptunerat

    • Contacts third-party web service commonly abused for C2

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

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks