General

  • Target
    EntropyVisual.exe
  • Size 174KB
  • Sample260720-q2el3sb12j
  • SHA256 98949a7ab21c8981302f801e635a90dac71b6d64f15cbe5a321cc27fa402bd9b
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • neptunerat

C2
  • dawdawf-59833.portmap.host:59833

Attributes
  • filename

    USB.exe

  • group

    MasonGroup

  • key

    YXMevQg8gL83v0H8

  • rat_name

    MasonRAT

Targets

    • Target
      EntropyVisual.exe
    • Size 174KB
    • SHA256 98949a7ab21c8981302f801e635a90dac71b6d64f15cbe5a321cc27fa402bd9b
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detects DonutLoader

    • 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.

    • Family: NeptuneRAT, MasonRAT

      NeptuneRAT aka MasonRAT is a trojan written in C#.

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • 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.

    • ConfuserEx .NET packer

      Detects ConfuserEx .NET packer.

MITRE ATT&CK Enterprise v16

Tasks