Malware

Pierluigi Paganini October 02, 2025
CERT-UA warns UAC-0245 targets Ukraine with CABINETRAT backdoor

CERT-UA warns UAC-0245 targets Ukraine with CABINETRAT backdoor via malicious Excel XLL add-ins spotted in Sept 2025. The Computer Emergency Response Team of Ukraine (CERT-UA) warned of cyberattacks by the group UAC-0245 using the CABINETRAT backdoor. The campaign, seen in September 2025, involved malicious Excel XLL add-ins posing as software tools (e.g. “UBD Request.xll”, “recept_ruslana_nekitenko.xll”). […]

Pierluigi Paganini October 02, 2025
China-linked APT Phantom Taurus uses Net-Star malware in espionage campaigns against key sectors

China-linked APT Phantom Taurus targets government and telecom orgs with Net-Star malware for espionage, using unique tactics over two years. China-nexus APT Phantom Taurus has targeted government and telecom organizations for espionage, using Net-Star malware and distinct TTPs. Phantom Taurus is a previously undocumented Chinese APT, it has targeted entities in Africa, the Middle East, […]

Pierluigi Paganini September 28, 2025
SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 64

Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Malware Newsletter Brewing Trouble — Dissecting a macOS Malware Campaign   Large-Scale Attack Targeting Macs via GitHub Pages Impersonating Companies to Attempt to Deliver Stealer Malware Prompts as Code & Embedded Keys | The Hunt for LLM-Enabled […]

Pierluigi Paganini September 26, 2025
Microsoft uncovers new variant of XCSSET macOS malware in targeted attacks

Microsoft Threat Intelligence researchers found a new XCSSET macOS malware variant used in limited attacks. Microsoft Threat Intelligence researchers have discovered a new version of the macOS malware XCSSET that has been employed in limited attacks. Trend Micro first spotted the malware in 2020 when it was spreading through Xcode projects and exploiting two zero-day vulnerabilities […]

Pierluigi Paganini September 26, 2025
Google warns of Brickstorm backdoor targeting U.S. legal and tech sectors

China-linked actors used Brickstorm malware to spy on U.S. tech and legal firms, stealing data undetected for over a year, Google warns. Google Threat Intelligence Group (GTIG) observed the use of the Go-based backdoor BRICKSTORM to maintain persistence in U.S. organizations since March 2025. Targets include legal, Software as a Service (SaaS) providers, Business Process Outsourcers […]

Pierluigi Paganini September 25, 2025
Volvo North America disclosed a data breach following a ransomware attack on IT provider Miljödata

Volvo North America disclosed a data breach that exposed the personal data of its employees after a ransomware attack hit third-party supplier Miljödata. Volvo NA disclosed a data breach that exposed the personal data of its employees after a ransomware attack hit the third-party supplier Miljödata. The ransomware attack occurred in August and impacted at […]

Pierluigi Paganini September 22, 2025
Researchers expose MalTerminal, an LLM-enabled malware pioneer

SentinelOne uncovered MalTerminal, the earliest known malware with built-in LLM capabilities, and presented it at LABScon 2025. SentinelLABS researchers discovered MalTerminal, the earliest known LLM-enabled malware, which generates malicious logic at runtime, making the detection more complex. Researchers identified it via API key patterns and prompt structures, uncovering new samples and other offensive LLM uses, […]

Pierluigi Paganini September 22, 2025
Beware: GitHub repos distributing Atomic Infostealer on macOS

LastPass warns macOS users of fake GitHub repos distributing Atomic infostealer malware disguised as legitimate tools. LastPass warns macOS users about fake GitHub repositories spreading malware disguised as legitimate tools, redirecting victims to download the Atomic macOS infostealer. “The LastPass Threat Intelligence, Mitigation, and Escalation (TIME) team is tracking an ongoing, widespread infostealer campaign targeting […]

Pierluigi Paganini September 21, 2025
ESET uncovers Gamaredon–Turla collaboration in Ukraine cyberattacks

ESET found evidence that Russia-linked groups Gamaredon and Turla collaborated in cyberattacks on Ukraine between February and April 2025. ESET reported Russia-linked groups Gamaredon and Turla collaborated in cyberattacks against entities in Ukraine. The Russia-linked APT group Gamaredon (a.k.a. Shuckworm, Armageddon, Primitive Bear, ACTINIUM, Callisto) is known for targeting government, law enforcement, and defense organizations in Ukraine since 2013. The Turla APT group (aka Snake, Uroburos, Waterbug, Venomous […]

Pierluigi Paganini September 21, 2025
SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 63

Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Malware Newsletter SmokeLoader Rises From the Ashes  Hive0154, aka Mustang Panda, drops updated Toneshell backdoor and novel SnakeDisk USB worm Popular Tinycolor npm Package Compromised in Supply Chain Attack Affecting 40+ Packages  Self-replicating Shai-hulud worm spreads […]