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220.88.75.74 has a very high threat confidence level of 93%, originating from Osan, South Korea, on the Korea Telecom network (4766). It has been observed across 19 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 7, 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.
| Date | Category | Protocol | Comment |
|---|---|---|---|
| Mar 6, 2026 | Brute Force | TELNET | SikkerGuard: 2 blocked packets |