Capital One Services, LLC

Farshid Marbouti

Stephen Fletcher

Sarvani Kare

Patrick Sofo

Boshika Tara

Baharak Saberidokht

Vannia Gonzalez Macias

Lee Adcock

Nahid Farhady Ghalaty

Daniel Liu

Gurpreet Singh Sandhu

Urvish Patel

Methods and systems are described herein for detecting anomalous access to system resources. An anomaly detection system may access system events from one or more computing devices and may generate entries from the system events. Each entry may include a corresponding timestamp indicating a time when a corresponding system event occurred, a corresponding user identifier indicating a user account within a computing environment associated with the corresponding system event, a corresponding location identifier indicating a location within the computing environment, and a corresponding action identifier indicating an action that the user account performed with respect to the location or an object within the computing environment. The generated entries may be aggregated and input into an anomaly detection model to obtain anomalous activity identified by the model.

Anomaly detection in computing system events

In some implementations, a system may receive a shell script associated with a computing device. The system may generate a character frequency feature vector based on the shell script. The system may input text of the shell script to a convolutional neural network (CNN) branch of a trained deep learning model. The system may input the character frequency feature vector to a feedforward neural network (FNN) branch of the trained deep learning model. The system may determine using the trained deep learning model, respective probability scores for each of a plurality of obfuscation types for the shell script based on a combined output of the CNN branch and the FNN branch. The system may detect whether the shell script is obfuscated based on respective probability scores for each of the plurality of obfuscation types determined for the shell script.

Deep learning based detection of malicious shell scripts

Methods and systems comprising a first portion of a model that includes a model component that is trained to perform sentiment analysis based on training data for a plurality of users (e.g., what language, phrases, and/or responses the population at large uses). The first portion of the model also includes a model component that is trained to identify user intent based on the sentiment analysis that is specific to user groups. For example, the system first determines the likely context and/or meaning of communications of the user. The system then determines a likely intent of the user based on the likely context and/or meaning of communications (e.g., based on a correlation of the meaning of communications of the user and the intents of users corresponding to a user group of the user).

Methods and systems for cyber threat detection using artificial intelligence models in data-sparse environments

Systems and methods enable automated and scalable obfuscation detection in programming scripts, including processing devices that receive software programming scripts and a symbol set. The processing devices determine a frequency of each symbol and an average frequency of the symbols in the script text. The processing devices determine a normal score of each symbol based on the frequency of each symbol and the average frequency to create a symbol feature for each symbol including the normal score. The processing devices utilize an obfuscation machine learning model including a classifier for binary obfuscation classification to detect obfuscation in the script based on the symbol features. The processing devices cause to display an alert indicting an obfuscated software programming script on a screen of a computing device associated with an administrative user to recommend security analysis of the software programming script based on the binary obfuscation classification.

Computer-based systems configured for automated computer script analysis and malware detection and methods thereof

In some implementations, a system may receive a shell script associated with a computing device. The system may generate a character frequency feature vector based on the shell script. The system may input text of the shell script to a convolutional neural network (CNN) branch of a trained deep learning model. The system may input the character frequency feature vector to a feedforward neural network (FNN) branch of the trained deep learning model. The system may determine using the trained deep learning model, a respective probability score for each of a plurality of obfuscation types for the shell script based on a combined output of the CNN branch and the FNN branch. The system may detect whether the shell script is obfuscated based on the respective probability score for each of the plurality of obfuscation types determined for the shell script.

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McLean, VA, United States of America

Farshid Marbouti