Device, system and method for extraction of malicious communication pattern to detect traffic caused by malware using traffic logs
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United States of America Patent
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Jul 9, 2019
Grant Date -
Jan 18, 2018
app pub date -
Feb 3, 2016
filing date -
Feb 4, 2015
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Abstract
A malicious communication pattern extraction device includes: a statistical value calculation unit that calculates a statistical value for an appearance frequency of each of plural communication patterns, from a traffic log obtained from traffic caused by malware, and a traffic log obtained from traffic in a predetermined communication environment; a malicious list candidate extraction unit that compares between the appearance frequency of the traffic logs for each of the communication patterns, based on the calculated statistical value, and extracts the communication pattern as the malicious communication pattern when a difference between both of the appearance frequencies is equal to or more than a predetermined threshold; and a threshold setting unit that sets a threshold so that an erroneous detection rate probability of erroneously detecting the traffic caused by malware and a detection rate probability of detecting the traffic caused by malware is equal to or more than a certain value.
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