Today’s Cobalt Strike release is the result of notes and my first-hand experience from five different exercises. There’s a lot of great stuff here, particularly for Beacon users.
Beacon’s HTTP stager uses WinINet to communicate [even before this update]. This has a benefit. The HTTP stager will authenticate to a proxy server when stored credentials are available. Sometimes, the current process does not know the credentials needed to get through a web proxy server. Beacon’s HTTP stager now detects this situation and prompts the user for credentials. The dialog is the same one Internet Explorer uses. Between Beacon’s new HTTP stager and DNS stager—you now have the tools to defeat most tough egress restrictions.
Cobalt Strike is one of my favorite tools. It makes the Team's life easier.