Four Seconds to Botnet - Analyzing a Self Propagating SSH Worm with Cryptographically Signed C2 [Guest Diary], (Wed, Feb 11th)
Summary
The article discusses an SSH worm that self-propagates in approximately four seconds and utilizes cryptographically signed command and control (C2). It's authored by a SANS Internet Storm Center intern, Johnathan Husch, and analyzes the worm's rapid spread and sophisticated C2 infrastructure. The worm is notable for its speed and the use of cryptographic signatures to protect its C2 communication.
IFF Assessment
The discovery of a rapidly propagating SSH worm with cryptographically signed C2 is bad news for defenders.
Severity
Defender Context
Defenders need to be aware of the rapid propagation speed and the use of cryptographically signed C2 channels. This combination makes detection and mitigation more challenging. Defenders should monitor SSH traffic for anomalous activity and implement strong SSH security practices, including key-based authentication and timely patching.