General

  • Target

    https://cdn.discordapp.com/attachments/1310256244057178142/1313542262587658260/Bootstrapper.exe?ex=6750830f&is=674f318f&hm=ec6694cb32fb28b6b12d50268f26e35ffcb30197c2294db4a93b379b2701e8e6&

  • Sample

    241203-t6cvtstmby

Malware Config

Targets

    • Target

      https://cdn.discordapp.com/attachments/1310256244057178142/1313542262587658260/Bootstrapper.exe?ex=6750830f&is=674f318f&hm=ec6694cb32fb28b6b12d50268f26e35ffcb30197c2294db4a93b379b2701e8e6&

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Downloads MZ/PE file

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Blocklisted process makes network request

    • Checks whether UAC is enabled

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks