TL;DR WatchGuard Red Cell researcher Euler Neto investigated three malware campaigns involving VBScript (VBS), revealing how cybercriminals combine phishing, obfuscated scripts, and legitimate Windows components to deliver malicious payloads while evading detection. The research examines Overlord…
TL;DR Euler Neto, a member of the WatchGuard Threat Lab, identified an active ClickFix and EtherHiding campaign targeting Windows users in Anglophone countries. WatchGuard telemetry observed activity affecting the United States, Canada, United Kingdom, Ireland, Australia, and New Zealand, with the…
TL;DR Cristóbal Tárraga García, a member of the WatchGuard Threat Lab, uncovered a malware loader targeting Portuguese-speaking users that uses an Ethereum smart contract to dynamically locate attacker infrastructure and distribute additional payloads. The multi-stage infection chain combines…
TL;DR Euler Neto, a member of the WatchGuard Threat Lab identified an active malware campaign using the ErrTraffic Malware-as-a-Service framework to distribute multiple threats through compromised WordPress websites, ClickFix social engineering, and EtherHiding. The campaign uses Polygon blockchain…
In Episode 378 of The 443 Security Simplified, Marc Laliberte and Corey Nachreiner examine lessons from a recent CISA security incident, a vulnerability affecting the Amazon Q Developer extension for Visual Studio Code, and Microsoft research into a destructive malware platform known as Giga Wiper…
What happens when AI makes Waterfall agile? A few weeks ago, I was sitting with one of our engineering VPs while he walked me through his workflow in Cursor. Before writing a single line of code, he spent a meaningful amount of time using Cursor to craft a feature specification, a detailed natural…
WatchGuard telemetry identified a campaign associated to TimbreStealer, which is known to target companies based in Mexico. This research, conducted by Euler Neto and Cristóbal Tárraga, describes behaviors similar to those observed in a previous campaign documented by Cisco Talos in 2024, which uses…
TL;DR: Iran-linked MuddyWater, also known as Seedworm, is using trusted software, DLL side-loading, and legitimate tools to quietly spy on high-value organizations across manufacturing, aviation, finance, education, government, and public sector environments. This campaign is not focused on…
The WatchGuard Attestation Team has uncovered an undocumented pivot framework written in Golang that opens a Smux-multiplexed SOCKS5-style pivot channel on each compromised host using one of two interchangeable transports: KCP-over-UDP with DTLS obfuscation or Noise-over-TCP with TLS obfuscation…
WatchGuard telemetry identified a campaign associated to Grandoreiro that uses the DLL Side-Loading technique abusing four different softwares, targeting banks in Portugal. Also, it was identified cases of a known campaign that uses a malicious VBS to deliver the malware, targeting companies in…