BambooToken malware uses MQTT protocol for Windows/Linux C2

Tue, 15 Sep 2026 15:32:56 +0000

Engineer — Learn: MQTT as a C2 channel is an emerging evasion technique worth noting for threat modeling — if you run MQTT brokers or IoT infrastructure, review whether outbound MQTT to external brokers is permitted and consider blocking or monitoring it.
SOC/IR — Plan: Build or tune detections for MQTT (port 1883/8883) traffic from endpoints to external brokers as a C2 indicator; the summary lacks published IOCs, but MQTT is not typically monitored in most SIEM/EDR rulesets and this framework’s activity dates to 2023.
Leader — Skip

Mqtt on CuraSec