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79.100.204.121 has a very high threat confidence level of 91%, originating from Nesebar, Bulgaria, on the Vivacom Bulgaria EAD network (8866). It has been observed across 46 sessions targeting TELNET, with detected attack patterns including telnet shell escalation with busybox execution attempt, First observed on January 21, 2026, most recently active March 10, 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.