THE OUTSIDER PHISHING KIT: A RESILIENT THREAT IN THE FACE OF LAW ENFORCEMENT ACTION

Summary from the TLDR InfoSec newsletter

Despite recent takedown efforts by Google and the FBI, the ChenLun Outsider Phishing-as-a-Service platform has proven highly resilient, with over 700 new phishing pages deployed in a single month. The platform operates a sophisticated kill chain that utilizes WebSockets to stream victim keystrokes in real time while allowing affiliates to manually push contextual 2FA prompts on demand. Defenders can hunt for this infrastructure across all known templates by looking for the unique GetSyncSetting configuration file and an alphabetical page prefix convention that maps directly to the victim exploitation stage.