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CAFE: Robust Detection of Malicious Macro Based on Cross-modal Feature Extraction

PROCEEDINGS OF THE 2024 27 TH INTERNATIONAL CONFERENCE ON COMPUTER SUPPORTED COOPERATIVE WORK IN DESIGN, CSCWD 2024(2024)

Chinese Acad Sci

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Abstract
The detection of malicious macros has been a prominent focus of research. Previous approaches exhibit two notable shortcomings. Firstly, methods centered on document and macro code features often fall short in effectively countering targeted adversarial strategies. Secondly, detection techniques relying on deceptive information, such as visual and textual cues, although alleviating certain challenges, introduce a new vulnerability to adversarial machine learning techniques. In this paper, we present Collaborative Adaptive Feature Extraction method (CAFE), designed for robust detection based on deceptive information. The core of CAFE is a feature fusion network architecture, where modality-shared associations and modality-private information are modeled from feature of different modalities, resulting in independently valid and comprehensive feature representations. An adaptive feature sampling module is introduced to address partial feature absence, enhancing detection robustness. Experimental results, conducted on two datasets, demonstrate that CAFE adeptly captures shared and complementary information from two modalities, showcasing its capability for robust malicious macro detection in the presence of input noise and adversarial samples.
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Key words
Malicious Macro Detection,Multi-modal Features,Model Robustness,Security
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