DIANNA Explains 2: Agent Tesla—A Better RAT

This report analyzes a stealthy variant of the Agent Tesla Remote Access Trojan/infostealer that exfiltrates keystrokes, clipboard data, browser and email credentials via Telegram, employs multi-layered obfuscation and anti-analysis techniques, and achieves persistence; it contrasts detection timelines to show legacy signature-based tools lag behind deep-learning preemptive detection and recommends enhanced network monitoring and lifecycle detection to mitigate such threats.