Interesting large and small malspam attachments from 2023, (Wed, Jan 3rd)

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At the end of a year, or at the beginning of a new one, I like to go over all malicious attachments that were caught in my e-mail trap over the last 12 months, since this can provide a good overview of long-term malspam trends and may sometimes lead to other interesting discoveries. Over the years, I found that, at a minimum, it is usually instructive to look at what the largest and the smallest pieces of malware that one managed to catch were[1]. This held true even for 2023, as both the smallest and the largest sample I had turned out to be interesting in their own right. But let’s start at the beginning…

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