SilentSync RAT — Threat Analysis Report By CyberDudeBivash — Global Threat Intel & Practical Defense
Executive Summary SilentSync is a modular, cross-platform Remote Access Trojan (RAT) observed in recent eCrime and suspected APT intrusions. It focuses on quiet persistence and synchronized data staging , blending into normal traffic by using cloud storage APIs, messaging webhooks, and domain-fronted HTTPS . Operators leverage it for initial footholds, post-exploitation reconnaissance, credential theft, lateral movement, and selective exfiltration. Why it matters: low noise, strong OPSEC, and cloud-service living-off-the-land (LotL) TTPs make SilentSync difficult to spot with signature-only defenses. Threat Overview Delivery: phishing attachments (ISO/LNK/HTML smuggling), SEO-poisoned “updates,” malvertising, supply-chain dropper in installers. Execution: PowerShell/WMIC/Scheduled Tasks on Windows; LaunchAgents/LaunchDaemons on macOS; systemd timers/cron on Linux. C2 & Exfil: HTTPS to look-alike or compromised domains , optional domain fronting/CDN , and cl...