Fake Purchase Order Emails Spread Fileless PureLogs Malware via RAR Archives

Hackers are using fake purchase order emails and process hollowing to deploy fileless PureLogs malware to steal Windows users' browser, crypto, and Discord data...

Trojanized Gemini and Claude Installers Target Developers Via SEO Poisoning

Cybercriminals are using SEO poisoning and fake Gemini and Claude installer sites to infect developers with fileless malware and steal data...

Microsoft’s Retired IE Tool MSHTA Now Being Used in Fileless Malware Attacks

Despite Internet Explorer’s retirement, hackers are abusing the legacy MSHTA utility in stealthy fileless malware attacks targeting Windows users...

Fileless Multi-Stage Remcos RAT: From Phishing to Memory-Resident Execution

Fileless Multi-Stage Remcos RAT: From Phishing to Memory-Resident Execution By Madhini Muralidharan · March 11, 2026 Traditional malware campaigns rely heavily on dropping executable files to disk—artifacts that defenders can scan, quarantine, and analyze with signature-based security tools. Mode...

Multi-Stage VOID#GEIST Malware Delivering XWorm, AsyncRAT, and Xeno RAT

Cybersecurity researchers have disclosed details of a multi-stage malware campaign that uses batch scripts as a pathway to deliver various encrypted remote access trojan RATs payloads that correspond to XWorm, AsyncRAT, and Xeno RAT. The stealthy attack chain has been codenamed VOIDGEIST by...

Fileless protection explained: Blocking the invisible threat others miss

Most antivirus software for personal users scans your computer for malware hiding in files. This is, after all, how most malware is traditionally spread. But what about attacks that never create files? Fileless malware is a fast-growing threat that evades traditional antivirus software, because...

Maverick: a new banking Trojan abusing WhatsApp in a mass-scale distribution

A malware campaign was recently detected in Brazil, distributing a malicious LNK file using WhatsApp. It targets mainly Brazilians and uses Portuguese-named URLs. To evade detection, the command-and-control C2 server verifies each download to ensure it originates from the malware itself. The whol...

Chinese APT Hits Philippine Military Firm with New EggStreme Fileless Malware

Bitdefender uncovers EggStreme, a fileless malware by a China-based APT targeting the Philippine military and APAC organisations. Cybersecurity…...

New Fileless Malware Attack Uses AsyncRAT for Credential Theft

LevelBlue Labs reports AsyncRAT delivered through a fileless attack chain using ScreenConnect, enabling credential theft and persistence...

The Silent, Fileless Threat of VShell

The Silent, Fileless Threat of VShell By Sagar Bade · August 21, 2025 Introduction Linux environments are often seen as bastions of security, favored by developers, sysadmins, and security professionals for their stability, transparency, and resistance to malware. Compared to Windows, the attack...

Cybercriminals Use Excel Exploit to Spread Fileless Remcos RAT Malware

Cybersecurity researchers have discovered a new phishing campaign that spreads a new fileless variant of known commercial malware called Remcos RAT. Remcos RAT "provides purchases with a wide range of advanced features to remotely control computers belonging to the buyer," Fortinet FortiGuard Lab...

Fake CAPTCHA Pages Used by Lumma Stealer to Spread Fileless Malware

Lumma Stealer malware uses fake CAPTCHA to deceive victims. This information-stealing malware targets sensitive data like passwords and…...

LODEINFO Fileless Malware Evolves with Anti-Analysis and Remote Code Tricks

Cybersecurity researchers have uncovered an updated version of a backdoor called LODEINFO that's distributed via spear-phishing attacks. The findings come from Japanese company ITOCHU Cyber & Intelligence, which said the malware "has been updated with new features, as well as changes to the...

How ransomware operators try to stay under the radar

An often heard remark is that when your security solution notices a ransomware attack, it’s already too late. Theres a lot of truth in that, if you consider the encryption process to be the ransomware attack. However, these days encryption is just a part of many ransomware attacks. Some of the...

New Python-Based Fileless Malware Named ‘PyLoose’ Targeting Cloud Environments

Threat Level Attack Report For a detailed threat advisory, download the pdf file here Summary A new fileless attack called PyLoose targets cloud workloads by loading an XMRig Miner directly into memory using Python code and the memfd technique. This evasive attack highlights the need for advanced...

PyLoose: Python-based fileless malware targets cloud workloads to deliver cryptominer

PyLoose is a newly discovered Python-based fileless malware targeting cloud workloads. Get a breakdown of how the attack unfolds and the steps to mitigate it...

Webinar recap: EDR vs MDR for business success

Did you miss our recent webinar on EDR vs. MDR? Don't worry, we've got you covered! In this blog post, we'll be recapping the highlights and key takeaways from the webinar hosted by Marcin Kleczynski, CEO and co-founder of Malwarebytes, and featuring guest speaker Joseph Blankenship, Vice Preside...

Upcoming webinar: Is EDR or MDR better for your business?

Don't miss our upcoming webinar on EDR vs. MDR! In the webinar, Marcin Kleczynski, CEO and co-founder of Malwarebytes, and guest speaker Joseph Blankenship, Vice President and research director at Forrester, discuss topic such as: The difference between EDR and MDR, how EDR solutions can be...

Silence is golden partner for Truebot and Clop ransomware

A recent rise in the number of Truebot infections has been attributed to a threat actor known as the Silence Group. The Silence Group is an initial access broker IAB that frequently changes tools and tactics to stay on top of the game. An IAB's primary task is to find a weakness or vulnerability,...

Cryptojackers growing in numbers and sophistication

With rising energy costs and increased volatility in the value of cryptocurrencies, we were bound to see a rise in malicious cryptomining, aka cryptojacking. If you dont know whether you will ever see a return on your investments in mining equipment, one will look for other opportunities. But if...