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210.139.97.76 has a high threat confidence level of 62%, originating from Noe, Japan, on the NTT PC Communications, Inc. network (2514). It has been observed across 3 sessions targeting TELNET, with detected attack patterns including telnet shell escalation with busybox execution attempt, First observed on February 11, 2026, most recently active February 14, 2026.
Telnet session exhibiting privilege escalation and shell breakout commands (enable, system, shell, sh) followed by execution of /bin/busybox with a non-standard or arbitrary applet name. The sequence indicates an attempt to escape restricted CLI environments and execute a staged or randomly named payload via BusyBox. The presence of an unknown BusyBox applet strongly suggests automated bot deployment logic rather than legitimate administrative activity.