Top 10 Malware July 2021

guest · Sep 30, 2021

Top 10 Malware July 2021
August 27, 2021
https://www.cisecurity.org/blog/top-10-malware-july-2021/

In July 2021, the MS-ISAC observed Agent Tesla and Jupyter’s return to the Top 10. The Top 10 Malware variants comprise 63% of the total malware activity in July 2021, increasing 1% from June 2021. Shlayer is likely to continue its prevalence in the Top 10 Malware for the coming quarter. However, the April patch from Apple addresses a zero-day vulnerability Shlayer used, which is likely affecting its campaign as we continue to see a 13% decrease in infections, from the previous month. Additionally, Shlayer activity decreased due to the summer break in the education sector, which is the SLTT sector using the most Apple products.
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In July 2021, malvertisement accounted for the greatest number of alerts. Malvertisement continues as the top initial infection vector due to Shlayer activity. Activity levels for dropped increased, while activity for malspam, malvertisement, and multiple decreased.

Below are the Top 10 Malware ranked in order of prevalence.
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Top 10 Malware July 2021

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