General

  • Target
    https://www.mediafire.com/file/0cwhpnxnuyj71ls/MasonRAT-SRC.rar/file
  • Sample260916-wa727stcld

Malware Config

Extracted

Family
  • umbral

Version
  • v1.3

C2
  • https://discord.com/api/webhooks/1542436032425885706/O8RuUpRvQXRWJ4M6P93OpbjS_pYTemPlOMlK5iUzI5DOhCit3QIyz5d1Q6m2b2-rvyKj

Extracted

Family
  • neptunerat

Attributes
  • filename

    MasonUSB.exe

  • group

    MasonGroup

  • key

    DRo5XjCavUPTuAaw

  • localhost

    127.0.0.1:1417

  • rat_name

    MasonRAT

Targets

    • Target
      https://www.mediafire.com/file/0cwhpnxnuyj71ls/MasonRAT-SRC.rar/file
    • Detects NeptuneRAT stealer

    • Detects Umbral payload

    • Family: NeptuneRAT, MasonRAT

      NeptuneRAT aka MasonRAT is a trojan written in C#.

    • Family: Umbral

      Umbral stealer is an open-source modular stealer written in C#.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Uses the VBS compiler for execution

MITRE ATT&CK Enterprise v16

Tasks