General

  • Target
    https://cdn.discordapp.com/attachments/1532825419995283706/1548657831610425455/Krypton-Client-1.21.1_1.jar?ex=6aa7db7f&is=6aa689ff&hm=9d9ca92ae4396b3d59aefbfd1ea3b88ec2c44291a21035ce0502f29867bed15d&
  • Sample260913-swdtpsyeqe

Malware Config

Targets

    • Target
      https://cdn.discordapp.com/attachments/1532825419995283706/1548657831610425455/Krypton-Client-1.21.1_1.jar?ex=6aa7db7f&is=6aa689ff&hm=9d9ca92ae4396b3d59aefbfd1ea3b88ec2c44291a21035ce0502f29867bed15d&
    • Downloads MZ/PE file

    • Uses browser remote debugging

      Can be used to control the browser and steal sensitive information such as credentials and session cookies.

    • A potential corporate email address has been identified in the URL

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads ssh keys stored on the system

      Tries to access SSH used by SSH programs.

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

MITRE ATT&CK Enterprise v16

Tasks