Translated: Talos' insights from the recently leaked Conti ransomware playbook

By Caitlin Huey, David Liebenberg, Azim Khodjibaev, and Dmytro Korzhevin. Executive summary Cisco Talos recently became aware of a leaked playbook that has been attributed to the ransomware-as-a-service RaaS group Conti. Talos has a team of dedicated, native-level speakers that translated these...

Threat Roundup for August 20 to August 27

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Aug. 20 and Aug. 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...

Talos Takes Ep: #65: How several RAT campaigns in Latin America are connected

By Jon Munshaw. The latest episode of Talos Takes is available now. Download this episode and subscribe to Talos Takes using the buttons below, or visit the Talos Takes page. As more people around the world start to get vaccinated against COVID-19, travel is becoming easier, especially during...

Malicious Campaign Targets Latin America: The seller, The operator and a curious link

By Asheer Malhotra and Vitor Ventura, with contributions from Vanja Svajcer. Cisco Talos has observed a new malware campaign delivering commodity RATs, including njRAT and AsyncRAT.The campaign targets travel and hospitality organizations in Latin America.Techniques utilized in this campaign...

Threat Roundup for August 13 to August 20

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Aug. 13 and Aug. 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...

Neurevt trojan takes aim at Mexican users

By Chetan Raghuprasad, with contributions from Vanja Svajcer. News summaryCisco Talos discovered a new version of the Neurevt trojan with spyware and backdoor capabilities in June 2021 using Cisco Secure Endpoint product telemetry.This version of Neurevt appears to target users of Mexican...

Vulnerability Spotlight: Memory corruption vulnerability in Daemon Tools Pro

Piotr Bania of Cisco Talos discovered this vulnerability. Blog by Jon Munshaw. Cisco Talos recently discovered a memory corruption vulnerability in Disc Soft Ltd.'s Daemon Tools Pro. Daemon Tools Pro is a professional emulation software that works with disc images and virtual... This is only the...

Vulnerability Spotlight: Multiple integer overflow vulnerabilities in GPAC Project on Advanced Content

A Cisco Talos team member discovered these vulnerabilities. Blog by Jon Munshaw. Cisco Talos recently discovered multiple integer overflow vulnerabilities in the GPAC Project on Advanced Content that could lead to memory corruption. The GPAC Project on Advanced Content is an open-source... This i...

Threat Roundup for August 6 to August 13

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Aug. 6 and Aug. 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...

Ransomware Gangs Exploiting Windows Print Spooler Vulnerabilities

Ransomware operators such as Magniber and Vice Society are actively exploiting vulnerabilities in Windows Print Spooler to compromise victims and spread laterally across a victim's network to deploy file-encrypting payloads on targeted systems. "Multiple, distinct threat actors view this...

Talos Takes Ep. #64: Back 2 Skool edition

By Jon Munshaw. The latest episode of Talos Takes is available now. Download this episode and subscribe to Talos Takes using the buttons below, or visit the Talos Takes page. There's no shortage of complications leading into this new school year. Students, parents, teachers and admins alike... Th...

Vulnerability Spotlight: Multiple vulnerabilities in AT&T Labs’ Xmill utility

Carl Hurd of Cisco Talos discovered these vulnerabilities. Blog by Jon Munshaw. Cisco Talos recently discovered multiple vulnerabilities in AT&T Labs’ Xmill utility. An attacker could take advantage of these issues to carry out a variety of malicious actions, including corrupting the... This is...

Vulnerability Spotlight: Code execution vulnerability in Mozilla Firefox

Marcin “Icewall” Noga of Cisco Talos discovered this vulnerability. Blog by Jon Munshaw. Cisco Talos recently discovered a use-after-free vulnerability in Mozilla Firefox that could lead to code execution. Firefox is a widely used web browser available on many operating systems. This... This is...

Talos Takes Ep: #63: Shield your eyes from the Solarmarker

By Jon Munshaw. The latest episode of Talos Takes is available now. Download this episode and subscribe to Talos Takes using the buttons below, or visit the Talos Takes page. Andrew Windsor has been following the Solarmarker threat for months. But it really started to catch his eye when he... Thi...

Threat Roundup for July 30 to August 6

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between July 30 and Aug. 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...

Vulnerability Spotlight: Use-after-free vulnerability in tinyobjloader

Lilith of Cisco Talos discovered this vulnerability. Blog by Jon Munshaw. Cisco Talos recently discovered that a specific function of tinyobjloader does not properly validate array indexes. An adversary could trick a user into opening a specially crafted file, causing an index... This is only the...

Threat Source newsletter (Aug. 5, 2021)

Newsletter compiled by Jon Munshaw.Good afternoon, Talos readers. We hope everyone is enjoying BlackHat and/or DEFCON this week, regardless of if you're attending virtually or in person. In case you missed any of our talks from BlackHat, you can check them out here, along... This is only the...

Updates to the Cisco Talos Email Status Portal

Cisco Talos is rolling out several changes to the Email Status Portal that adds new features and makes the Portal even easier to use. The Talos Email Status Portal allows users to view mail samples submitted and their statuses, analyze graphical displays of submission metrics, administer... This ...

Threat Roundup for July 23 to July 30

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between July 23 and July 30. 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...

Threat Source newsletter (July 29, 2021)

Newsletter compiled by Jon Munshaw.Good afternoon, Talos readers. Thanks to everyone who joined us live yesterday for our talk on business email compromise. If you missed us live, the recording is up on our YouTube page now. Nick Biasini from Talos Outreach provided some great advice on... This i...