Trusted DesignNexcorium is a multi-architecture Mirai variant exploiting CVE-2024-3721 in TBK DVR devices to build a botnet for distributed denial-of-service attacks. The campaign, attributed to Nexus Team based on custom HTTP headers, uses OS command injection to deliver malware across ARM, MIPS, and x86-64 architectures. The malware implements multiple persistence mechanisms including init configuration, startup scripts, systemd services, and cron jobs. It features XOR-encoded configurations, self-integrity checks, and self-replication capabilities. Attack capabilities include UDP flood, TCP SYN flood, TCP ACK flood, and VSE query flood among others. The botnet spreads through brute-force attacks using default credentials and exploits CVE-2017-17215 targeting Huawei HG532 devices, demonstrating typical IoT-focused botnet characteristics.
Created: 2026-05-17
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