2022 Year in Review Livestream
Did you miss our livestream focused on the Ukraine topics presented in the Cisco Talos Year in Review report? Join host Hazel Burton and special guests Kendall McKay, Nick Randolph, and Vanja Svajcer as they discuss Talos' now-years-long critical infrastructure effort in Ukraine.
Emotet coming in hot
Emotet is a ubiquitous and well-known banking trojan that has evolved over the years to become a very successful modular botnet capable of dropping a variety of other threats. Even after a global takedown campaign in early 2021 disrupted the botnet, it reemerged later that year,
Threat Advisory: High Severity OpenSSL Vulnerabilities
In late October two new buffer overflow vulnerabilities, CVE-2022-3602 and CVE-2022-3786, were announced in OpenSSL versions 3.0.0 to 3.0.6. These vulnerabilities can be exploited by sending an X.509 certificate with a specially crafted email address, potentially causing a buffer
Threat Advisory: Microsoft warns of actively exploited vulnerabilities in Exchange Server
Even organizations that use Exchange Online may still be affected if they run a hybrid server.
Vulnerability Spotlight: Vulnerabilities in WWBN AVideo web app could lead to command injection, authentication bypass
Cisco Talos recently discovered multiple vulnerabilities in the WWBN AVideo web application that could allow an attacker to carry out a wide range of malicious actions, including command injection and authentication bypass. AVideo is an open-source web application that allows us
Attackers leveraging Dark Utilities "C2aaS" platform in malware campaigns
By Edmund Brumaghin, Azim Khodjibaev and Matt Thaxton, with contributions from Arnaud Zobec. Executive Summary * Dark Utilities, released in early 2022, is a platform that provides full-featured C2 capabilities to adversaries. * It is marketed as a means to enable remote acc
Conti and Hive ransomware operations: What we learned from these groups' victim chats
As part of Cisco Talos’ continuous efforts to learn more about the current ransomware landscape, we recently examined a trove of chat logs between the Conti and Hive ransomware gangs and their victims. Ransomware-as-a-service groups have exploded in popularity over the past few
Quarterly Report: Incident Response trends in Q1 2022
Ransomware continues as the top threat, while a novel increase in APT activity emerges Ransomware was still the top threat Cisco Talos Incident Response (CTIR) saw in active engagements this quarter, continuing a trend that started in 2020. As mentioned in the 2021 year-in-revie
Threat Spotlight: AsyncRAT campaigns feature new version of 3LOSH crypter
By Edmund Brumaghin, with contributions from Alex Karkins. * Ongoing malware distribution campaigns are using ISO disk images to deliver AsyncRAT, LimeRAT and other commodity malware to victims. * The infections leverage process injection to evade detection by endpoint securit