VShell is a post-exploitation command and control framework increasingly observed in intrusions targeting government and critical infrastructure sectors. Following NVISO’s initial research and publication, we continued tracking VShell infrastructure globally to understand how it is deployed and operated by state-linked threat actors. This session opens with a concise technical overview of VShell: how it works and what makes it attractive to adversaries. We then focus on what happened after disclosure. We demonstrate how VShell C2 infrastructure can still be fingerprinted at scale, how combined netflow analysis enables victim identification, and how network communication encryption can be reversed to provide on-the-wire visibility into attacker activity, directly relevant for law enforcement and defenders & incident responders. The session closes with a practitioner’s reflection: does publishing threat research actually change attacker behaviour, or do detection and tracking opportunities persist long after disclosure?
