Attackers Using Excel Read-Only Files To Obscure Malware

Attackers Using Excel Read-Only Files To Obscure Malware By Kurt Mackie 03/31/2020 Attackers can attempt to hide malicious payloads in Excel files sent by e-mail by using a standard Excel feature, according to a Tuesday post by Mimecast researchers. It turns out that automatic encryption of Excel files happens when they are saved as “read-only”

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