Security News > 2023 > August > Phishing-as-a-Service Gets Smarter: Microsoft Sounds Alarm on AiTM Attacks

Microsoft is warning of an increase in adversary-in-the-middle phishing techniques, which are being propagated as part of the phishing-as-a-service cybercrime model.

In addition to an uptick in AiTM-capable PhaaS platforms, the tech giant noted that existing phishing services like PerSwaysion are incorporating AiTM capabilities.

"This development in the PhaaS ecosystem enables attackers to conduct high-volume phishing campaigns that attempt to circumvent MFA protections at scale," the Microsoft Threat Intelligence team said in a series of posts on X. Phishing kits with AiTM capabilities work in two ways, one of which concerns the use of reverse proxy servers to relay traffic to and from the client and legitimate website and stealthily capture user credentials, two-factor authentication codes, and session cookies.

"In AiTM through synchronous relay servers the target is presented with a copy or mimic of a sign-in page, like traditional phishing attacks," Microsoft said.

Greatness was first documented by Cisco Talos in May 2023 as a service that lets cybercriminals target business users of the Microsoft 365 cloud service using convincing decoy and login pages.

"Unlike traditional phishing attacks, incident response procedures for AiTM require revocation of stolen session cookies."

News URL

https://thehackernews.com/2023/08/phishing-as-service-gets-smarter.html