Hackers Deploy Advanced Botnet Over Exposed Docker APIs via Tor (2025)
In September 2025, a sophisticated threat campaign was uncovered targeting exposed Docker APIs, where attackers leveraged the Tor network to obfuscate their activities and deploy a new, evolving botnet. The attackers used automated scanning to discover open Docker API endpoints (commonly on port 2375), then executed a multi-stage infection chain utilizing malicious containers. These payloads established persistent SSH access, blocked further exploitation by others, and launched additional tools for internal scanning, lateral movement, and covert communication. While earlier versions dropped cryptominers, the updated tooling focused on botnet expansion, user monitoring, and groundwork for additional attacks such as credential theft or DDoS. This incident exemplifies the rapid shift toward automation and stealth in cloud-native threats. Its relevance is underscored by the proliferation of misconfigured APIs and cloud workloads, combined with attackers’ increasing use of anonymizing networks (like Tor) and multi-vector attacks. Organizations with exposed or poorly secured container environments are urgently at risk.
Kill Chain