General

  • Target

    https://cdn.discordapp.com/attachments/1239190397004288060/1248928132405133403/BeTheBest.exe?ex=66657276&is=666420f6&hm=f5bc7a45c0489c8661cf6821ac18e6430de7c87518a258e07711fe2ba0c6b141&

  • Sample

    240608-mybt8sbh39

Malware Config

Targets

    • Target

      https://cdn.discordapp.com/attachments/1239190397004288060/1248928132405133403/BeTheBest.exe?ex=66657276&is=666420f6&hm=f5bc7a45c0489c8661cf6821ac18e6430de7c87518a258e07711fe2ba0c6b141&

    • Renames multiple (82) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

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

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

MITRE ATT&CK Enterprise v15

Tasks