This is one of the competitions on Kaggle that was sponsored my Microsoft. Data records are 12+million and 83 columns with target column as a flag showing whether a machine is hit by malware.
Since the train.csv is 4.7GB and test.csv is 3.7GB, I cannot upload the files here. Please visit the following link for dataset and its description
Competition Link - https://www.kaggle.com/c/microsoft-malware-prediction