Extracted

• • Target
    https://gofile.io/d/Vvbx1vU0

  Score

  10^/10

  discoverybootkitdefense_evasionexecutionneptuneratumbralpersistencestealertrojanransomware

  • Detects NeptuneRAT stealer

  • Detects Umbral payload

  • Family: NeptuneRAT, MasonRAT

    NeptuneRAT aka MasonRAT is a trojan written in C#.

    trojanneptunerat

  • Family: Umbral

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

    stealerumbral

  • Downloads MZ/PE file

  • Executes dropped EXE

  • Adds Run key to start application

    persistence

  • Contacts third-party web service commonly abused for C2

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

  • Looks up external IP address via web service

    Uses a legitimate IP lookup service to find the infected system's external IP.

    discovery

  • Writes to the Master Boot Record (MBR)

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

    bootkitpersistence

  • Drops file in System32 directory

  behavioral1behavioral2behavioral3behavioral4