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Ryuk ransomware attacks businesses over the holidays

While families gathered for food and merriment on Christmas Eve, most businesses slumbered. Nothing was stirring, not even a mouse—or so they thought. For those at Tribune Publishing and Data Resolution, however, a silent attack was slowly spreading through their networks, encrypting data and halting operations. And this attack was from a fairly new ransomware family called Ryuk. Ryuk, which made … [Read more...]

What’s in the spam mailbox this week?

We’ve seen a fair few spam emails in circulation this week, ranging from phishing to money muling to sexploitation. Shall we take a look? The FBI wants to give you back your money First out of the gate, we have a missive claiming to be from the FBI. Turns out you lost a huge sum of money that you somehow don’t have any recollection of, and now the FBI wants to give it back to you via … [Read more...]

Five easy ways to recognize and dispose of malicious emails

I suppose we all get our share of spam. Some more than others. But how do we differentiate between simple commercial spam and the types of emails that want to get us in trouble? The unsolicited commercial spam email is generally easy to recognize, report, and discard, but what about more dangerous types of spam? How can you determine if an email contains a malicious link or attachment, or is … [Read more...]

Internet Shortcut used in Necurs malspam campaign

The Necurs botnet continues to be one of the most prolific malicious spam distributors, with regular waves of carefully-crafted attachments that are used to download malware. The majority of malspam campaigns that we track are targeting Microsoft Office with documents containing either macros or exploits. We also see a number of other types of malicious attachments that are zipped scripts (.VBS, … [Read more...]

Labs CTNT report shows shift in threat landscape to cryptomining

It’s that time again! Time for the quarterly Malwarebytes Labs Cybercrime Tactics and Techniques report (aka the Labs CTNT report). To get a more complete picture of what’s been going on in cybercrime this quarter, the Labs team has combined intel and statistics gathered from January through March 2018 from our Intelligence, Research, and Data Science teams with telemetry from both our … [Read more...]