Threat Roundup for April 15 to April 22

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between April 15 and April 22. 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... This is on...

Watch Out! Cryptocurrency Miners Targeting Dockers, AWS and Alibaba Cloud

LemonDuck, a cross-platform cryptocurrency mining botnet, is targeting Docker to mine cryptocurrency on Linux systems as part of an active malware campaign. "It runs an anonymous mining operation by the use of proxy pools, which hide the wallet addresses," CrowdStrike said in a new report. "It...

Beers with Talos, Ep. #120: How attackers are finding ways around MFA

Beers with Talos BWT Podcast episode No. 120 is now available. Download this episode and subscribe to Beers with Talos: Apple Podcasts Google Podcasts Spotify StitcherRecorded April 6, 2022 If iTunes and Google Play aren't your thing, click here. The trend of... This is only the beginning! Please...

Threat Roundup for April 8 to April 15

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between April 8 and April 15. 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...

Haskers Gang Gives Away ZingoStealer Malware to Other Cybercriminals for Free

A crimeware-related threat actor known as Haskers Gang has released an information-stealing malware called ZingoStealer for free on, allowing other criminal groups to leverage the tool for nefarious purposes. "It features the ability to steal sensitive information from victims and can download...

Threat Roundup for April 1 to April 8

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between April 1 and April 8. 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 in Spring Cloud Function Framework Affecting Cisco Products: March 2022

On March 29, 2022, the following critical vulnerability in the Spring Cloud Function Framework affecting releases 3.1.6, 3.2.2, and older unsupported releases was disclosed: CVE-2022-22963: Remote code execution in Spring Cloud Function by malicious Spring Expression For a description of this...

Threat Roundup for March 25 to April 1

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between March 25 and April 1. 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...

Beers with Talos, Ep. #119: If it walks like a BlackCat, smells like a BlackCat...

Beers with Talos BWT Podcast episode No. 119 is now available. Download this episode and subscribe to Beers with Talos: Apple Podcasts Google Podcasts Spotify StitcherRecorded March 25, 2022. If iTunes and Google Play aren't your thing, click here. We're... This is only the beginning! Please visi...

Threat Roundup for March 18 to March 25

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between March 18 and March 25. 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... This is on...

Vulnerability Spotlight: Heap overflow in Sound Exchange libsox library

Lilith of Cisco Talos discovered these vulnerabilities. Blog by Jon Munshaw. Cisco Talos recently discovered an exploitable heap-based buffer overflow vulnerability in the sphere.c startread functionality of Sound Exchange libsox. The libsox library is a library of... This is only the beginning!...

Sound Exchange libsox sphere.c start_read() heap-based buffer overflow vulnerability

Talos Vulnerability Report TALOS-2021-1434 Sound Exchange libsox sphere.c startread heap-based buffer overflow vulnerability March 23, 2022 CVE Number CVE-2021-40426 SUMMARY A heap-based buffer overflow vulnerability exists in the sphere.c startread functionality of Sound Exchange libsox 14.4.2 a...

Threat Roundup for March 11 to March 18

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between March 11 and March 18. 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... This is on...

Threat Source newsletter (March 17, 2022) — Channelling productive worry to help Ukraine

By Jon Munshaw. Welcome to this week’s edition of the Threat Source newsletter. Cisco Talos continues to be heads-down working on the current Ukraine situation. This is incredibly difficult for everyone across the globe, especially for those directly affected. But that doesn’t mean those of... Th...

Preparing for denial-of-service attacks with Talos Incident Response

By Yuri Kramarz. Over the years, several extorsion-style and politically motivated denial-of-service attacks increased and still pose a threat to businesses and organizations of any size that can find themselves in the crosshairs of various malicious campaigns. A detailed... This is only the...

Beers with Talos, Ep. #118: Reflecting on the current situation in Ukraine

Beers with Talos BWT Podcast episode No. 118 is now available. Download this episode and subscribe to Beers with Talos: Apple Podcasts Google Podcasts Spotify StitcherRecorded March 7, 2022. If iTunes and Google Play aren't your thing, click here. This was... This is only the beginning! Please...

Threat advisory: Cybercriminals compromise users with malware disguised as pro-Ukraine cyber tools

Update March 12, 2022: Cisco Talos has updated the IOC section with additional hashes. Executive summary Opportunistic cybercriminals are attempting to exploit Ukrainian sympathizers by offering malware purporting to be offensive cyber tools to target Russian entities. Once downloaded, these...

Threat Roundup for March 4 to March 11

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between March 4 and March 11. 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...

Malware Posing as Russia DDoS Tool Bites Pro-Ukraine Hackers

Looking to cyber-hassle Russia, Ukrainian sympathizers? Be careful — malware is making the rounds, disguised as a pro-Ukraine cyber-tool that will turn around and bite you instead, researchers are warning. In a Wednesday threat advisory, Cisco Talos described a campaign it’s observed in which a...

Deep dive: Vulnerabilities in ZTE router could lead to complete attacker control of the device

Cisco Talos’ vulnerability research team disclosed multiple vulnerabilities in the ZTE MF971R wireless hotspot and router in October. Several months removed from that disclosure and ZTE’s patch, we decided to take an even closer look at two of these vulnerabilities — CVE-2021-21748 and... This is...