General

  • Target
    Minecraft House.exe
  • Size 160KB
  • Sample261013-ybehdsy16k
  • SHA256 0e46dd655ec2df27c85006309dc3949891d0c59694339810eb13bbe0cdee2d9c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • neptunerat

C2
  • zf9-58733.portmap.host:58733

  • m7mdLffeadad-57254.portmap.host:57254

Attributes
  • filename

    USB.exe

  • group

    MasonGroup

  • key

    O65aLXQPh300RIkl

  • rat_name

    MasonRAT

Targets

    • Target
      Minecraft House.exe
    • Size 160KB
    • SHA256 0e46dd655ec2df27c85006309dc3949891d0c59694339810eb13bbe0cdee2d9c
    • 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#.

    • Disables Task Manager via registry modification

    • 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.

    • Writes to the Master Boot Record (MBR)

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

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v16

Tasks