Hackers Use Leaked Shellter Tool License to Spread Lumma Stealer and SectopRAT Malware

In yet another instance of threat actors repurposing legitimate tools for malicious purposes, it has been discovered that hackers are exploiting a popular red teaming tool called Shellter to distribute stealer malware. The company behind the software said a company that had recently purchased...

⚡ Weekly Recap: APT Campaigns, Browser Hijacks, AI Malware, Cloud Breaches and Critical CVEs

Cyber threats don't show up one at a time anymore. They're layered, planned, and often stay hidden until it's too late. For cybersecurity teams, the key isn't just reacting to alerts—it's spotting early signs of trouble before they become real threats. This update is designed to deliver clear,...

A week in security (May 19 – May 25)

Last week on Malwarebytes Labs: Lumma information stealer infrastructure disrupted Stalkerware apps go dark after data breach Scammers are using AI to impersonate senior officials, warns FBI 23andMe and its customers’ genetic data bought by a pharmaceutical org Malware-infected printer delivered...

Lumma information stealer infrastructure disrupted

The US Department of Justice DOJ and Microsoft have disrupted the infrastructure of the Lumma information stealer infostealer. Lumma Stealer, also known as LummaC or LummaC2, first emerged in late 2022 and quickly established itself as one of the most prolific infostealers. Infostealers is the na...

FBI and Europol Disrupt Lumma Stealer Malware Network Linked to 10 Million Infections

A sprawling operation undertaken by global law enforcement agencies and a consortium of private sector firms has disrupted the online infrastructure associated with a commodity information stealer known as Lumma aka LummaC or LummaC2, seizing 2,300 domains that acted as the command-and-control C2...

Microsoft Dismantles Lumma Stealer Network, Seizes 2,000+ Domains

Microsoft disrupts Lumma Stealer network, seizing 2,000 domains linked to 394,000 infections in global cybercrime crackdown with law enforcement partners...

Authorities Carry Out Elaborate Global Takedown of Infostealer Heavily Used by Cybercriminals

US, European, and Japanese authorities, along with tech companies including Microsoft and Cloudflare, say they’ve disrupted Lumma, an infostealer popular with criminal gangs...

Lumma Stealer: Breaking down the delivery techniques and capabilities of a prolific infostealer

Over the past year, Microsoft observed the persistent growth and operational sophistication of Lumma Stealer, an infostealer malware used by multiple financially motivated threat actors to target various industries. Our investigation into Lumma Stealer’s distribution infrastructure reveals a...

Lumma Stealer – Tracking distribution channels

Introduction The evolution of Malware-as-a-Service MaaS has significantly lowered the barriers to entry for cybercriminals, with information stealers becoming one of the most commercially successful categories in this underground economy. Among these threats, Lumma Stealer has emerged as a...

A Deep Dive into the Latest Version of Lumma InfoStealer

Unmasking the Evolving Threat: A Deep Dive into the Latest Version of Lumma InfoStealer with Code Flow Obfuscation By Mohideen Abdul Khader · April 21, 2025 Summary Lumma Stealer, first identified in 2022, remains a significant threat to this day, continuously evolving its tactics, techniques, an...

AI-Assisted Fake GitHub Repositories Fuel SmartLoader and LummaStealer Distribution

In this blog entry, we uncovered a campaign that uses fake GitHub repositories to distribute SmartLoader, which is then used to deliver Lumma Stealer and other malicious payloads. The campaign leverages GitHub’s trusted reputation to evade detection, using AI-generated content to make fake...

Fake CAPTCHA PDFs Spread Lumma Stealer via Webflow, GoDaddy, and Other Domains

Cybersecurity researchers have uncovered a widespread phishing campaign that uses fake CAPTCHA images shared via PDF documents hosted on Webflow's content delivery network CDN to deliver the Lumma stealer malware. Netskope Threat Labs said it discovered 260 unique domains hosting 5,000 phishing P...

Sticky Werewolf Uses Undocumented Implant to Deploy Lumma Stealer in Russia and Belarus

The threat actor known as Sticky Werewolf has been linked to targeted attacks primarily in Russia and Belarus with the aim of delivering the Lumma Stealer malware by means of a previously undocumented implant. Cybersecurity company Kaspersky is tracking the activity under the name Angry Likho,...

Angry Likho APT Resurfaces with Lumma Stealer Attacks Against Russia

Angry Likho APT resurfaces, targeting Russian and Belarusian organizations with Lumma Stealer malware via phishing attacks, stealing credentials, banking data, and more...

New Malware Campaign Uses Cracked Software to Spread Lumma and ACR Stealer

Cybersecurity researchers are warning of a new campaign that leverages cracked versions of software as a lure to distribute information stealers like Lumma and ACR Stealer. The AhnLab Security Intelligence Center ASEC said it has observed a spike in the distribution volume of ACR Stealer since...

A week in security (January 27 – February 2)

Last week on Malwarebytes Labs: ClickFix vs. traditional download in new DarkGate campaign Cybercrime gets a few punches on the nose Microsoft advertisers phished via malicious Google ads The DeepSeek controversy: Authorities ask where does the data come from and how safe is it? These are the 10...

Lumma Stealer’s GitHub-Based Delivery Explored via Managed Detection and Response

The Managed XDR team investigated a sophisticated campaign distributing Lumma Stealer through GitHub, where attackers leveraged the platform's release infrastructure to deliver malware such as SectopRAT, Vidar, and Cobeacon...

Lumma Stealer Found in Fake Crypto Tools and Game Mods on GitHub

McAfee Labs uncovers malicious GitHub repositories distributing Lumma Stealer malware disguised as game hacks and cracked software. Learn…...

Beware: Fake CAPTCHA Campaign Spreads Lumma Stealer in Multi-Industry Attacks

Cybersecurity researchers are calling attention to a new malware campaign that leverages fake CAPTCHA verification checks to deliver the infamous Lumma information stealer. "The campaign is global, with Netskope Threat Labs tracking victims targeted in Argentina, Colombia, the United States, the...

Top 5 Malware Threats to Prepare Against in 2025

2024 had its fair share of high-profile cyber attacks, with companies as big as Dell and TicketMaster falling victim to data breaches and other infrastructure compromises. In 2025, this trend will continue. So, to be prepared for any kind of malware attack, every organization needs to know its...