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APT Hackers Turn to Malicious Excel Add-ins as Initial Intrusion Vector

Microsoft’s decision to block Visual Basic for Applications (VBA) macros by default for Office files downloaded from the internet has led many threat actors to improvise their attack chains in recent months.
Now according to Cisco Talos, advanced persistent threat (APT) actors and commodity malware families alike are increasingly using Excel add-in (.XLL) files as an initial intrusion vector.

Source:: The Hackers News