RONINGLOADER usa drivers assinados para desativar o Microsoft Defender e ignorar o EDR

RONINGLOADER usa drivers assinados para desativar o Microsoft Defender e ignorar o EDR

RONINGLOADER usa drivers assinados para desativar o Microsoft Defender e ignorar o EDR

O Elastic Security Labs descobriu uma campanha sofisticada que implanta um carregador recém-identificado, denominado RONINGLOADER, que transforma drivers de kernel legitimamente assinados para desabilitar sistematicamente o Microsoft Defender e evitar ferramentas de detecção e resposta de endpoint (EDR).

Atribuída ao grupo Dragon Breath APT (APT-Q-27), esta campanha demonstra uma evolução significativa na sofisticação dos ataques, visando principalmente usuários de língua chinesa por meio de instaladores trojanizados disfarçados de software legítimo, incluindo Google Chrome e Microsoft Teams.

O malware emprega um intrincado mecanismo de entrega em vários estágios, aproveitando o abuso do Protected Process Light (PPL), políticas personalizadas de controle de aplicativos do Windows Defender (WDAC) e drivers de modo kernel para neutralizar soluções populares de segurança de endpoint no mercado chinês.

Esta campanha marca um claro avanço em relação às atividades anteriores de Dragon Breath documentadas entre 2022 e 2023, mostrando as crescentes capacidades técnicas e adaptabilidade do ator da ameaça.

A descoberta do RONINGLOADER ocorreu após uma pesquisa de agosto de 2025 detalhando métodos para abusar do PPL para desativar ferramentas de segurança de endpoint.

Laboratórios de segurança elástica

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