Why won’t my sample run?
Here at SophosLabs we have recently been seeing samples of Zbot (also known as the Zeus crimeware kit) that refuse to execute on any of our testing machines. Often when this happens it is because the sample is corrupt or will only execute on specific versions of Windows, or maybe because the file will only run on a specific date, or because a certain payload is only activated on a certain date (e.g
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Why won’t my sample run?