Blog
May 5, 2026 06:00

UAT-8302 and its box full of malware

Cisco Talos is disclosing UAT-8302, a sophisticated, China-nexus advanced persistent threat (APT) group targeting government entities in South America since at least late 2024 and government agencies in southeastern Europe in 2025.

March 20, 2025 06:00

UAT-5918 targets critical infrastructure entities in Taiwan

UAT-5918, a threat actor believed to be motivated by establishing long-term access for information theft, uses a combination of web shells and open-sourced tooling to conduct post-compromise activities to establish persistence in victim environments for information theft and credential harvesting.

December 11, 2023 08:50

Operation Blacksmith: Lazarus targets organizations worldwide using novel Telegram-based malware written in DLang

Our latest findings indicate a definitive shift in the tactics of the North Korean APT group Lazarus Group.

August 24, 2023 08:04

Lazarus Group's infrastructure reuse leads to discovery of new malware

Lazarus Group appears to be changing its tactics, increasingly relying on open-source tools and frameworks in the initial access phase of their attacks, as opposed to strictly employing them in the post-compromise phase.

August 24, 2023 08:02

Lazarus Group exploits ManageEngine vulnerability to deploy QuiteRAT

This is the third documented campaign attributed to this actor in less than a year, with the actor reusing the same infrastructure throughout these operations.

September 8, 2022 08:01

Lazarus and the tale of three RATs

Cisco Talos assesses with high confidence these attacks have been conducted by the North Korean state-sponsored threat actor Lazarus Group.

September 7, 2022 08:01

MagicRAT: Lazarus’ latest gateway into victim networks

Cisco Talos has discovered a new remote access trojan (RAT) we're calling "MagicRAT," developed and operated by the Lazarus APT group, which the U.S. government believes is a North Korean state-sponsored actor.

May 5, 2022 08:01

Mustang Panda deploys a new wave of malware targeting Europe

* In February 2022, corresponding roughly with the start of the Russian Invasion of Ukraine, Cisco Talos began observing the China-based threat actor Mustang Panda conducting phishing campaigns against European entities, including Russian organizations. Some phishing messages co

November 10, 2021 17:11

North Korean attackers use malicious blogs to deliver malware to high-profile South Korean targets

* Cisco Talos has observed a new malware campaign operated by the Kimsuky APT group since June 2021. * Kimsuky, also known as Thallium and Black Banshee, is a North Korean state-sponsored advanced persistent threat (APT) group active since 2012. * This campaign utilizes malici