Fileless Malware

Tsundere Bot and the Evolution of TA584 Ransomware

Tsundere Bot Replaces Initial Access Hackers in Ransomware Attacks

Cybercriminal group TA584 has dramatically evolved its tactics, replacing traditional initial access hackers with advanced malware like Tsundere Bot. This sophisticated malware platform, part of a broader trend in the malware-as-a-service economy, allows attackers to bypass traditional defenses and execute fileless attacks. Tsundere Bot is enabling more efficient ransomware deployments, posing an increasing threat to businesses across multiple industries. Learn how this new wave of malware affects organizations and how to protect against such evolving threats in this comprehensive guide. ... Read More
ClickFix

New ClickFix Attack Targeting Windows and macOS Users to Deploy Infostealer Malware

ClickFix, a sophisticated social engineering attack active in 2025 that deploys infostealer malware against both Windows and macOS users. This technique is highly effective because it bypasses traditional security tools by manipulating users into executing malicious fileless commands disguised as legitimate troubleshooting steps, leveraging trusted platforms like Google services to maintain credibility. The text explains the distinct attack vectors for Windows (distributing ACR stealer via fake software archives) and macOS (using a fake Cloudflare prompt to execute the Odyssey stealer via the Terminal), emphasizing the challenges security solutions face with this memory-resident malware. Finally, the document concludes with advice on recognizing and avoiding ClickFix, along with a pitch from Technijian, an Orange County-based Managed IT Services provider, detailing their services for helping organizations defend against such advanced cross-platform social engineering attacks. ... Read More