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Mining or Nothing!, (Thu, Jan 11th)

Cryptocurrencies mining has been a trending attack for a few weeks. Our idling CPUs are now targeted by bad guys who are looked to generate some extra revenue by abusing our resources. Other fellow handlers already posted diaries about this topic. Renato found a campaign based on a WebLogic exploit[1] and Jim detected a peak of activity on port %%port:3333%%[2]. Yesterday, while reviewed alerts generated by my hunting scripts, I found an interesting snippet of code on Pastebin. Here is a copy of the script with some added comments in blue:

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