Extracted

• • Target

    2083f10b11097d67563cd88af575bd6aeb4d07fb0b016666058fd6c2072297db

  • Size

    106KB

  • MD5

    b06c811554508247282dc00b7a82b0ef

  • SHA1

    1574070e54ae15a93b8a9ecd4a40a98cfb2f1a71

  • SHA256

    2083f10b11097d67563cd88af575bd6aeb4d07fb0b016666058fd6c2072297db

  • SHA512

    f9f1f1c75ac472e4167ecba2811eae3b66c7023bd9257c310e2469be8b796010cb0657244640e2525f46464cee894bef87d284fb02b5ee3439d3f23ab45a8c6e

  • SSDEEP

    3072:GmqRL49gVu4HLM2daP8NJYHttq9iZLSHdUvynNe9nLsZ:GbeIM4/JY7q9SLS9Eynw9nL

  Score

  10^/10

  umbralbootkitpersistencestealer

  • Detect Umbral payload

  • Umbral

    Umbral stealer is an opensource moduler stealer written in C#.

    stealerumbral

  • Detects Windows exceutables bypassing UAC using CMSTP utility, command line and INF

  • Detects executables Discord URL observed in first stage droppers

  • Detects executables attemping to enumerate video devices using WMI

  • Detects executables containing possible sandbox analysis VM names

  • Detects executables containing possible sandbox analysis VM usernames

  • Detects executables containing possible sandbox system UUIDs

  • Checks computer location settings

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

  • Deletes itself

  • Executes dropped EXE

  • Adds Run key to start application

    persistence

  • Writes to the Master Boot Record (MBR)

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

    bootkitpersistence
  behavioral1behavioral2