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COVID-19 relief package provides another platform for bad actors

The ongoing COVID-19 pandemic continues to yield new subject matter that bad actors can turn into fodder for enticing victims into clicking on malicious links and attachments. On March 27, the CARES Act was signed into law by the President, enacting a wide range of stimulus packages designed to aid Americans and businesses during the […]

March 30, 2020 • 1 min read
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Threat Roundup for March 20 to March 27

Today, Talos is publishing a glimpse into the most prevalent threats we’ve observed between Mar 20 and Mar 27. As with previous roundups, this post isn’t meant to be an in-depth analysis. Instead, this post will summarize the threats we’ve observed by highlighting key behavioral characteristics, indicators of compromise, and discussing how our customers are […]

March 27, 2020 • 1 min read
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Threat Update: COVID-19

The COVID-19 pandemic is changing everyday life for workers across the globe. Cisco Talos continues to see attackers take advantage of the coronavirus situation to lure unsuspecting users into various pitfalls such as phishing, fraud, and disinformation campaigns. Talos has not yet observed any new techniques during this event. Rather, we have seen malicious actors […]

March 26, 2020 • 1 min read
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Threat Roundup for March 13 to March 20

Today, Talos is publishing a glimpse into the most prevalent threats we’ve observed between Mar 13 and Mar 20. As with previous roundups, this post isn’t meant to be an in-depth analysis. Instead, this post will summarize the threats we’ve observed by highlighting key behavioral characteristics, indicators of compromise, and discussing how our customers are […]

March 20, 2020 • 1 min read
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Threat Roundup for March 6 to March 13

Today, Talos is publishing a glimpse into the most prevalent threats we’ve observed between Mar 6 and Mar 13. As with previous roundups, this post isn’t meant to be an in-depth analysis. Instead, this post will summarize the threats we’ve observed by highlighting key behavioral characteristics, indicators of compromise, and discussing how our customers are […]

March 13, 2020 • 1 min read
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Threat Roundup for February 28 to March 6

Today, Talos is publishing a glimpse into the most prevalent threats we’ve observed between Feb 28 and Mar 6. As with previous roundups, this post isn’t meant to be an in-depth analysis. Instead, this post will summarize the threats we’ve observed by highlighting key behavioral characteristics, indicators of compromise, and discussing how our customers are […]

March 6, 2020 • 1 min read
Blog post

Bisonal: 10 years of play

Bisonal is a remote access trojan (RAT) that’s part of the Tonto Team arsenal. The peculiarity of the RAT is that it’s been in use for more than 10 years — this is an uncommon and long period for malware. Over the years, it has evolved and adapted mechanisms to avoid detection while keeping the core of […]

March 5, 2020 • 1 min read
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Threat Roundup for February 21 to February 28

Today, Talos is publishing a glimpse into the most prevalent threats we’ve observed between Feb 21 and Feb 28. As with previous roundups, this post isn’t meant to be an in-depth analysis. Instead, this post will summarize the threats we’ve observed by highlighting key behavioral characteristics, indicators of compromise, and discussing how our customers are […]

February 28, 2020 • 1 min read
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New Research Paper: Prevalence and Impact of Low-Entropy Packing Schemes in the Malware Ecosystem

Detection of malware is a constant battle between the technologies designed to detect and prevent malware and the authors creating them. One common technique adversaries leverage is packing binaries. Packing an executable is similar to applying compression or encryption and can inhibit the ability of some technologies to detect the packed malware. High entropy is […]

February 25, 2020 • 1 min read