General

  • Target
    https://gofile.io/d/8apO30NG
  • Sample261024-2m6msscy2t

Malware Config

Extracted

Family
  • neptunerat

C2
  • 5.tcp.cpolar.cn:11548

Attributes
  • filename

    USB.exe

  • group

    MasonGroup

  • key

    ofpfIrgRHfAb7CTj

  • rat_name

    MasonRAT

Targets

    • Target
      https://gofile.io/d/8apO30NG
    • Detects NeptuneRAT stealer

    • Family: NeptuneRAT, MasonRAT

      NeptuneRAT aka MasonRAT is a trojan written in C#.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Adds Run key to start application

    • Contacts third-party web service commonly abused for C2

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

    • Drops desktop.ini file(s)

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v16

Tasks