Dutch Authorities Dismantle Botnet Linked to 17 Million Infected Devices

Dutch authorities have announced the takedown of a botnet that enslaved millions of infected devices, including computers, tablets, smartphones, and IoT devices, to carry out malicious attacks. The bot network, per the Dutch Politie and the National Cyber Security Center NCSC, consisted of at lea...

A week in security (April 6 – April 12)

Last week on Malwarebytes Labs: Fake Claude site installs malware that gives attackers access to your computer ClickFix finds a new way to infect Macs Scammers pose as Amazon support to steal your account NSFW app leak exposes 70,000 prompts linked to individual users 30,000 private Facebook imag...

New SparkCat Variant in iOS, Android Apps Steals Crypto Wallet Recovery Phrase Images

Cybersecurity researchers have discovered a new version of the SparkCat malware on the Apple App Store and Google Play Store, more than a year after the trojan was discovered targeting both the mobile operating systems. The malware has been found to conceal itself within seemingly benign apps, su...

New CastleLoader Variant Linked to 469 Infections Across Critical Sectors

ANY.RUN report reveals how the new CastleLoader malware targets US government agencies using stealthy ClickFix tricks and memory-based attacks to bypass security...

CVE-2022-23763

Origin validation error vulnerability in NeoRS’s ActiveX moudle allows attackers to download and execute arbitrary files. Remote attackers can use this vulerability to encourage users to access crafted web pages, causing damage such as malicious code infections...

The Kimwolf Botnet is Stalking Your Local Network

The story you are reading is a series of scoops nestled inside a far more urgent Internet-wide security advisory. The vulnerability at issue has been exploited for months already, and it's time for a broader awareness of the threat. The short version is that everything you thought you knew about...

Snipping the Long Tail of Shai-Hulud 2.0

Wiz Research reveals the data behind Shai-Hulud's 2.0 long tail, the massive gap in cloud credential rotation, a potential link to the Trust Wallet incident, and how we finally "snipped the tail" on a month of ongoing infections...

Kimwolf Botnet Hijacks 1.8 Million Android TVs, Launches Large-Scale DDoS Attacks

A new distributed denial-of-service DDoS botnet known as Kimwolf has enlisted a massive army of no less than 1.8 million infected devices comprising Android-based TVs, set-top boxes, and tablets, and may be associated with another botnet known as AISURU, according to findings from QiAnXin XLab...

Shai Hulud 2.0, now with a wiper flavor

In September, a new breed of malware distributed via compromised Node Package Manager npm packages made headlines. It was dubbed "Shai-Hulud", and we published an in-depth analysis of it in another post. Recently, a new version was discovered. Shai Hulud 2.0 is a type of two-stage worm-like malwa...

Unraveling Water Saci's New Multi-Format, AI-Enhanced Attacks Propagated via WhatsApp

Through AI-driven code conversion and a layered infection chain involving different file formats and scripting languages, the threat actors behind Water Saci are quickly upgrading their malware delivery and propagation methods across WhatsApp in Brazil...

SideWinder's Shifting Sands: Click Once for Espionage

SideWinder's Shifting Sands: Click Once for Espionage By Ernesto Fernández Provecho and Pham Duy Phuc · October 22, 2025 In September 2025, the Trellix Advanced Research Center ARC detected a campaign targeting a European embassy located in New Delhi, India. Further investigation led to the...

Evolution of the PipeMagic backdoor: from the RansomExx incident to CVE-2025-29824

In April 2025, Microsoft patched 121 vulnerabilities in its products. According to the company, only one of them was being used in real-world attacks at the time the patch was released: CVE-2025-29824. The exploit for this vulnerability was executed by the PipeMagic malware, which we first...

Prompt Injection 2.0: Hybrid AI Threats

Prompt injection attacks, where malicious input is designed to manipulate AI systems into ignoring their original instructions and following unauthorized commands instead, were first discovered by Preamble, Inc. in May 2022 and responsibly disclosed to OpenAI. Over the last three years, these...

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...

SpyCloud Research Shows that Endpoint Detection and Antivirus Solutions Miss Two-Thirds (66%) of Malware Infections

Austin, TX, USA, 7th April 2025, CyberNewsWire...

New FrigidStealer Malware Infects macOS via Fake Browser Updates

Fake browser update scams now target Mac, Windows, and Android users, delivering malware like FrigidStealer, Lumma Stealer, and…...

Detecting Pegasus Infections

This tool seems to do a pretty good job. The company's Mobile Threat Hunting feature uses a combination of malware signature-based detection, heuristics, and machine learning to look for anomalies in iOS and Android device activity or telltale signs of spyware infection. For paying iVerify...

A New Phone Scanner That Detects Spyware Has Already Found 7 Pegasus Infections

The mobile device security firm iVerify has been offering a tool since May that makes spyware scanning accessible to anyone—and it’s already turning up victims...