General

  • Target
    dwe.exe
  • Size 48KB
  • Sample261030-nnfacaytbv
  • SHA256 38d73d1de4016d76d82ed62ba16ee905b05861c006146f65c1274dc0001f2561
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • neptunerat

C2
  • mskopjyivs.localto.net:2997

Attributes
  • filename

    USB.exe

  • group

    MasonGroup

  • key

    bVFuVmVjIbtJGGDp

  • rat_name

    MasonRAT

Targets

    • Target
      dwe.exe
    • Size 48KB
    • SHA256 38d73d1de4016d76d82ed62ba16ee905b05861c006146f65c1274dc0001f2561
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detects NeptuneRAT stealer

    • 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

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • ConfuserEx .NET packer

      Detects ConfuserEx .NET packer.

MITRE ATT&CK Enterprise v16

Tasks