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65.21.139.148 has a threat confidence score of 56%. This IP address from Finland (AS24940, Hetzner Online GmbH) has been observed in 1 honeypot sessions targeting TELNET protocols. Detected attack patterns include telnet shell breakout with busybox payload execution. First observed on April 30, 2026, most recently active April 30, 2026.
Telnet session exhibiting privilege escalation and shell breakout attempts (enable, system, linuxshell, shell, sh) followed by execution of /bin/busybox with a non-standard or arbitrary applet name. The combination indicates an automated attempt to escape restricted CLI environments and execute a staged or randomly named payload via BusyBox. This pattern is characteristic of IoT/Linux bot deployment frameworks leveraging BusyBox as a universal execution wrapper.