General

  • Target
    Host Ptocess for Wimdows Tasks.exe
  • Size 50KB
  • Sample261017-jskcmsbz2m
  • SHA256 43f2fa217be0267c2651706bec4b61be930274fbeb32053e2ebe275b7c9ee989
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • neptunerat

C2
  • modxza7f-46948.portmap.host:46948

Attributes
  • filename

    USB.exe

  • group

    MasonGroup

  • key

    ep54d754SlLJQaS6

  • rat_name

    MasonRAT

Targets

    • Target
      Host Ptocess for Wimdows Tasks.exe
    • Size 50KB
    • SHA256 43f2fa217be0267c2651706bec4b61be930274fbeb32053e2ebe275b7c9ee989
    • 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

    • Contacts third-party web service commonly abused for C2

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

MITRE ATT&CK Enterprise v16

Tasks