Cisco Talos Blog

October 31, 2018 10:31

Anatomy of a sextortion scam

While these attacks have been in the wild for months, Talos wanted to take a closer look at some of these campaigns to see why users were being tricked into sending the attackers large amounts of bitcoin despite the attackers' empty threats.

October 5, 2018 12:23

Threat Roundup Sept 28 - Oct 5

Today, as we do every week, Talos is giving you a glimpse into the most prevalent threats we’ve observed this week — covering the dates between Sept. 28 and Oct. 5. As with previous roundups, this post isn’t meant to be an in-depth analysis. Instead, we will summarize the threats

September 28, 2018 09:14

Threat Roundup Sept 21 - 28

Today, as we do every week, Talos is giving you a glimpse into the most prevalent threats we’ve observed this week — covering the dates between Sept. 21 and 28. As with previous roundups, this post isn’t meant to be an in-depth analysis. Instead, we will summarize the threats we

May 16, 2018 13:17

TeleGrab - Grizzly Attacks on Secure Messaging

The malware is mainly targeting Russian-speaking victims, and is intentionally avoiding IP addresses related with anonymizer services.

January 31, 2018 10:58

Ransom Where? Malicious Cryptocurrency Miners Takeover, Generating Millions

his post was authored by Nick Biasini, Edmund Brumaghin, Warren Mercer and Josh Reynolds with contributions from Azim Khodijbaev and David Liebenberg. Executive Summary The threat landscape is constantly changing; over the last few years malware threat vectors, methods and pay

September 27, 2017 13:38

FIN7 Group Uses JavaScript and Stealer DLL Variant in New Attacks

This post was authored by Michael Gorelik and Josh Reynolds Executive Summary Throughout this blog post we will be detailing a newly discovered RTF document family that is being leveraged by the FIN7 group (also known as the Carbanak gang) which is a financially-motivated grou

July 21, 2017 12:34

Threat Round-up for July 14 - July 21

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between July 14 and July 21. As with previous round-ups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting

May 26, 2017 12:41

Threat Round-up for May 19 - May 26

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between May 19 and May 26. As with previous round-ups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting ke

November 18, 2014 04:03

Reversing Multilayer .NET Malware

This post was authored by Dave McDaniel with contributions from Jaeson Schultz. Recently, we came across a malware sample that has been traversing the Internet disguised as an image of a woman. The malware sample uses several layers of obfuscation to hide its payload, including