securityonline.info 6/16/2026, 8:21:09 AM · external

Inside the Stealthy Agent Tesla Infection Chain

Inside the Stealthy Agent Tesla Infection Chain
Developing story vulnerability 9 articles tracked
Cisco SD‑WAN Manager and LiteSpeed cPanel zero‑day flaws actively exploited
CyberSIXT Evidence Panel Source marked as original reporting

THE article highlights two critical vulnerabilities detected today: CVE-2026-54420 related to a LiteSpeed cPanel Plugin and CVE-2026-20262 involving Cisco Catalyst SD-WAN Manager. It elaborates on an advanced malware infection chain, specifically Agent Tesla, illustrating how a seemingly benign phishing email can lead to significant system compromise.

This involves a multi-stage infection process utilizing heavily obfuscated scripts to disable local security, facilitate PowerShell launches, and employ techniques like process hollowing for stealthy execution. The malware incorporates anti-analysis capabilities to evade detection by security measures, and it targets sensitive data through a keylogger and screenshots, exfiltrating information via normal network traffic protocols. The article stresses the importance of advanced cybersecurity measures and employee training to counter such threats.

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Article by CyberSIXT

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