多模态智能体协同分析勒索软件,提升分类准确率与部署可靠性。
Multimodal Multi-Agent Ransomware Analysis Using AutoGen
- 分模块处理静态、动态、网络数据,用自编码器提取特征
- 融合后通过变压器分类,宏平均F1达0.936,误差显著降低
- 支持零日检测,可信决策机制适合真实安全场景
勒索软件已成为全球造成重大财务损失和运营中断的严重网络安全威胁。传统检测方法如静态分析、启发式扫描和行为分析单独使用时效果有限。本文提出一种多模态多智能体勒索软件分析框架,用于勒索软件家族分类。该框架融合静态、动态和网络三类信息,每类由专用智能体处理,采用自编码器进行特征提取,再通过融合智能体整合表示,并由基于Transformer的分类器识别具体家族。智能体间通过反馈机制迭代优化特征表示,抑制低置信度信息。在包含数千个勒索软件和良性样本的大规模数据集上评估,相比单模态及非自适应融合基线,宏平均F1最高提升0.936,校准误差降低。超过100轮训练中,智能体反馈环路呈现稳定单调收敛,智能体质量绝对提升超0.75,最终综合得分约0.88,无需微调语言模型。零日勒索软件检测仍受多态性和模态干扰影响,但置信度感知的拒答机制可实现可靠实际部署,优先选择保守可信决策而非强制分类。结果表明,该方法为提升真实世界勒索软件防御系统提供了可行且有效路径。
原文摘要 · Abstract (English)
Ransomware has become one of the most serious cybersecurity threats causing major financial losses and operational disruptions worldwide.Traditional detection methods such as static analysis, heuristic scanning and behavioral analysis often fall short when used alone. To address these limitations, this paper presents multimodal multi agent ransomware analysis framework designed for ransomware classification. Proposed multimodal multiagent architecture combines information from static, dynamic and network sources. Each data type is handled by specialized agent that uses auto encoder based feature extraction. These representations are then integrated through a fusion agent. After that fused representation are used by transformer based classifier. It identifies the specific ransomware family. The agents interact through an interagent feedback mechanism that iteratively refines feature representations by suppressing low confidence information. The framework was evaluated on large scale datasets containing thousands of ransomware and benign samples. Multiple experiments were conducted on ransomware dataset. It outperforms single modality and nonadaptive fusion baseline achieving improvement of up to 0.936 in Macro-F1 for family classification and reducing calibration error. Over 100 epochs, the agentic feedback loop displays a stable monotonic convergence leading to over +0.75 absolute improvement in terms of agent quality and a final composite score of around 0.88 without fine tuning of the language models. Zeroday ransomware detection remains family dependent on polymorphism and modality disruptions. Confidence aware abstention enables reliable real world deployment by favoring conservativeand trustworthy decisions over forced classification. The findings indicate that proposed approach provides a practical andeffective path toward improving real world ransomware defense systems.
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