Trusted DesignAryStinger is a sophisticated botnet targeting legacy routers based on RTL819X chipsets and NAS devices through vulnerabilities disclosed over a decade ago, including CVE-2013-3307, CVE-2016-5681, and CVE-2025-11837. The malware exists in two versions: a C-based RTL819X variant for resource-constrained routers and a Go-based Standard version for NAS devices. Both communicate with command-and-control servers using Protobuf-encoded, XOR-encrypted traffic. Infected devices function as Executors in a distributed infrastructure, performing reconnaissance activities including port scanning, subdomain enumeration, and service identification. The botnet supports traffic tunneling, remote access via Dropbear or gs-netcat, and can execute payloads in Go, Java, and Python. Over 4,300 routers globally have been confirmed infected, predominantly D-Link models, with concentrations in South Korea, China, and Sweden. The infrastructure serves as both a concealment layer and attack platform for cyber espionage and intrusio...
Created: 2026-06-19
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