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Blog: malware

FormBook Is the Latest Example of Malware-as-a-Service

FormBook malware is targeting South Korea and the U.S. and spreads via malicious email attachments, including malicious PDF, Word, and archive files.

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VMRay Guest Post: Fake Microsoft Word Invoice Hides Malware

Attackers often use social engineering to convince users to enable Microsoft Office macros. Guest author Rohan Viegas of VMRay analyzes an example.

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Blocking Malicious File Uploads, Part 2: OPSWAT Antivirus APIs

Allowing file uploads can be dangerous. Learn how to use antivirus APIs in order to protect systems from malicious file uploads.

No Macros Needed: Zusy Malware Spreads Via Legitimate PowerPoint Feature

A new variant of Zusy spreads via PowerPoint presentations but does not use macros. Find out how data sanitization stops this document-borne malware.

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Fireball Malware Infects 250 Million Devices

Fireball, a newly discovered and remarkably rampant strain of malware, has already infected up to 250 million devices. How did it spread to so many?

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Weekly Recap: Threats Detected and Prevented by Metadefender, May 21-28

Malware threats detected by the multi-scanning functionality of Metadefender Cloud (free version) during the week of May 21-28 are chronicled in this post.

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Update: Most Destructive Malware of All Time

All malware is inherently dangerous, but there are a few threats that stand out amongst the others when it comes to inflicting damage. We took a look at some of the most destructive malware of all time from traditional viruses, worms and Trojans to increasingly prevalent PUAs such as adware and spyware. This list, while covering most of the all-time worst threats, is not all- inclusive. For example, notable threats are not on this list such as the ILOVEYOU bug, although they also rank as highly destructive. How many of these threats do you remember?

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Weekly Recap: Threats Detected and Prevented by Metadefender, May 13-20

Malware threats detected by the multi-scanning functionality of Metadefender Cloud (free version) during the week of May 13-20 are chronicled in this post.

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Weekly Recap: Threats Detected and Prevented by Metadefender, April 30-May 7

Malware threats detected by the multi-scanning functionality of Metadefender Cloud (free version) during the week of April 30-May 7 are chronicled in this post.

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Weekly Recap: Threats Detected and Prevented by Metadefender, April 9-16

Malware threats detected by the multi-scanning functionality of Metadefender Cloud (free version) during the week of April 9-16 are chronicled in this post.

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