Nippon Telegraph and Telephone Corporation

Tetsuya Abe

Shingo Orihara

Atsutoshi Kumagai

Yasushi Okano

Hiroshi Asakura

A malware determination device, in which, upon input of an attribute name and an attribute value of an attribute of an executable file, a feature-selection setting unit registers the attribute with the attribute name in an attribute table as an attribute to be extracted, and registers the attribute value as an attribute value to be deleted in an attribute value table. Upon input of an executable file to be learned or to be determined, a feature extraction unit extracts an attribute value of an attribute registered as an attribute to be extracted in the attribute table from the executable file, to generate a feature vector including the extracted attribute value as a feature. A feature selection unit performs deletion of an attribute value registered as an attribute value to be deleted in the attribute value table from the feature vector.

Malware determination device, malware determination system, malware determination method, and program

An information analysis system includes a remark analysis unit, a thread analysis unit, and a storing unit. The remark analysis unit analyzes importance of a remark included in a thread serving as a group of remarks posted on a network, based on remark data serving as data relating to the remark, for each of the remarks. The thread analysis unit analyzes which of a plurality of preset categories the thread belongs to, based on thread data serving as data relating to the thread. The storing unit stores the remark, the importance of the remark, and a category of the thread including the remark in association with each other for each of the remarks, in a predetermined storage unit.

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Musashino, Japan

Tetsuya Abe