Avast Software S.r.o.

Jakub Kroustek

Olga Petrova

Fabrizio Biondi

Bretislav Sopík

Lukás Zobal

A method includes enabling a messaging server and providing credentials for the messaging server. A computing system is enabled and a malware application is received by the computing system. The malware application is executed by the computing system. The credentials are rendered accessible to the malware application via the computing system, and the malware application is enabled to transmit the credentials via network transmission from the computing system to a computer. An actor is enabled to access the messaging server over a network in response to the actor applying the credentials, and a first electronic message transmitted by the actor is received by the messaging server, the first electronic message including first content.

Messaging server credentials exfiltration based malware threat assessment and mitigation

A method and system for updating and applying a ruleset used for determining and mitigating malware threats. Communications of computing devices are monitored and first data file extracted. A first and second set of features are extracted. A first rule is applied to the first set of features of the first data file to determine a non-match. A second rule is applied to the second set of features to determine a match. A third rule is generated based on the first set of features, non-match, and match. Communications of a particular computing device are monitored and second data file extracted. A first set of features of the second data file are extracted. The third rule is applied to the first set of features of the second data file to determine a match. The second data file is disabled, blocked, or deleted based the match determination by the third rule.

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Rajhrad, Czechia

Jakub Kroustek