In this post, Unt 42 researchers look at the types of embedded payloads that attackers leverage to abuse Microsoft OneNote files. Our analysis of roughly 6,000 malicious OneNote samples from WildFire reveals that these samples have a phishing-like theme where attackers use one or more images to lure people into clicking or interacting with OneNote files.
The interaction then executes an embedded malicious payload. Since macros have been disabled by default in Office, attackers have turned to leveraging other Microsoft products for embedding malicious payloads. As a result, malicious OneNote files have grown in popularity.
Read more…
Source: Palo Alto Unit 42
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