2/26/2023 0 Comments Private profile redirectorGiven a CSV file with the from and to redirect values comma separated (no header), it'll create S3 objects with the appropriate metadata so that they redirect properly when hitting those routes. Routing rules have a max limit whereas this does not. Based in Arlington, VA, the company is privately held and is funded by Gula Tech Adventures, Paladin Capital, Evolution Equity, and private industry investors.Uses the x-amz-website-redirect-location to set bulk redirects for a given S3 bucket. Customers are in turn enabled to validate the risk posture and exposure of their business and employees and the performance of enterprise security teams and existing security solutions. The SCYTHE platform enables Red, Blue, and Purple teams to build and emulate real-world adversarial campaigns in a matter of minutes. SCYTHE provides an advanced attack emulation platform for the enterprise and cybersecurity consulting market. In addition, he has programmed custom Golang ransomware C2 and built a comprehensive ransomware readiness services offering to validate customer security controls around ransomware. He has developed the NTH Generations Endpoint security posture program written in GO. Derek has designed and implemented cybersecurity solutions in a range of industries including education, manufacturing, and insurance. Using Nth Generation’s exclusive cybersecurity lab and threat research, he focuses on strengthening security posture to defend against advanced virtual threats. Derek specializes in providing penetration testing services, red teaming, and other ethical hacking services. SCYTHE wants to thank Derek Johnson from NTH Generation Computing for the core content of this guest post.ĭerek Johnson is a Senior Cybersecurity Engineer at NTH Generation Computing. We also cover methods to detect and respond to domain fronting. This post covers how to leverage Azure’s Content Delivery Network (CDN) to bypass outbound controls at the target organization and how to set it up in your SCYTHE campaign. Leveraging domain fronting is one method of doing just that. Proxying C2 traffic through various hosts/domains is ideal to not expose your SCYTHE server to the target organization directly. The caveat, in this case, is that we are using legitimate Microsoft Azure domain names. If TLS inspection is in place, the HTTP Host field of the HTTP header can be checked and matched to the Server Name Indication (SNI) or against a deny/allow list of domain names.This is also known as TLS decryption or inspection. Inspect HTTPS traffic leaving your organization’s perimeter.As per MITRE ATT&CK, here are some options: A multitude of legitimate web sites and services leverage CDNs and therefore the detection of Command and Control (C2) through a CDN will generate a significant amount of events. Use the top search bar to search for “CDN” and select CDN profiles.ĭomain Fronting is one of the toughest techniques to detect and respond to due to the amount of traffic most organizations will have outbound to Content Delivery Networks (CDNs). Warning: Microsoft may not like you using their CDN for C2ġ.A public DNS A record, for your custom domain that points to your SCYTHE Server public IP address.The SCYTHE Server should be set up with both a SSL certificate and domain name.When SCYTHE uses Azure CDN it will make its first DNS request to the Endpoint Hostname (.) then traffic will be directed to the Origin Hostname ( Pre-requisites There are two major components within Azure CDN that makes this work. Using Azure CDN to hide C2 traffic is a great way to egress out of a network and obscure traffic. In this guest post by a SCYTHE Consulting Partner, we cover how to use the Microsoft Azure CDN to proxy C2 traffic from the target to your SCYTHE server. The Domain Fronting method allows the traffic to go from the target organization to a CDN that is rarely blocked. SCYTHE provides multiple redirectors/relays to proxy traffic (T1090) through domains and hosts that the target organization allows outbound. Proxying C2 traffic through various hosts/domains is an ideal technique to not expose your SCYTHE (or any C2) server to the target organization directly. Guest blog post by one of our partners, Derek Johnson - Senior Cybersecurity Engineer at NTHĭomain Fronting is a MITRE ATT&CK technique (T1090.004) where the attacker takes advantage of the routing mechanism of Content Delivery Networks (CDNs) to bypass egress (outbound) controls and establish Command and Control (C2).
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