Barracuda

Security, Access and Reliability for Cloud-Connected Networks and Applications

Malware

Threat Spotlight: Document-Based Malware

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Safeguard your business from evolving malware attacks.

Barracuda researchers have uncovered an alarming new rise in the use of document-based malware. A recent email analysis revealed that 48% of all malicious files detected in the last 12 months were some kind of document. More than 300,000 unique malicious documents were identified!

Since the beginning of 2019, however, these types of document-based attacks have been increasing in frequency – dramatically. In the first quarter of the year, 59% of all malicious files detected were documents, compared to 41% the prior year.

Here’s a closer look at document-based malware attacks and solutions to help detect and block them.

A recent email analysis revealed that 48% of all malicious files detected in the last 12 months were some kind of document. Click To Tweet

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Emails with subject “Ihre Rechnung” (German for „your invoice”)

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This post was submitted by Klaus Kofler

There is another round of emails flooding inboxes of German, Austrian, and Swiss mail accounts. The subject provides an invoice number, which together with a customer number and a total sum in the floating text, all looks more or less okay to not-suspicious/everyday users.

The mail also includes a linked zip-file, which should be suspicious itself, but still, some in an organization will click on it. This simple click will start the downloading sequence and a series of malicious events.

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