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    New Phishing-as-a-Service Platform Lets Cybercriminals Generate Convincing Phishing Pages

    justmattgBy justmattgMay 13, 2023No Comments3 Mins Read

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    May 13, 2023Ravie Lakshmanan

    phishing-as-a-service

    A new phishing-as-a-service (PhaaS or PaaS) platform named Greatness has been leveraged by cybercriminals to target business users of the Microsoft 365 cloud service since at least mid-2022, effectively lowering the bar to entry for phishing attacks.

    “Greatness, for now, is only focused on Microsoft 365 phishing pages, providing its affiliates with an attachment and link builder that creates highly convincing decoy and login pages,” Cisco Talos researcher Tiago Pereira said.

    “It contains features such as having the victim’s email address pre-filled and displaying their appropriate company logo and background image, extracted from the target organization’s real Microsoft 365 login page.”

    Campaigns involving Greatness have mainly manufacturing, health care, and technology entities located in the U.S., the U.K., Australia, South Africa, and Canada, with a spike in activity detected in December 2022 and March 2023.

    Cybersecurity

    Phishing kits like Greatness offer threat actors, rookies or otherwise, a cost-effective and scalable one-stop shop, making it possible to design convincing login pages associated with various online services and bypass two-factor authentication (2FA) protections.

    Specifically, the authentic-looking decoy pages function as a reverse proxy to harvest credentials and time-based one-time passwords (TOTPs) entered by the victims.

    phishing-as-a-service

    Attack chains begin with malicious emails containing an HTML attachment, which, upon opening, executes obfuscated JavaScript code that redirects the user to a landing page with the recipient’s email address already pre-filled and prompts for their password and MFA code.

    The entered credentials and tokens are subsequently forwarded to the affiliate’s Telegram channel for obtaining unauthorized access to the accounts in question.

    The AiTM phishing kit also comes with an administration panel that enables the affiliate to configure the Telegram bot, keep track of stolen information, and even build booby-trapped attachments or links.

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    What’s more, each affiliate is expected to have a valid API key in order to be able to load the phishing page. The API key also prevents unwanted IP addresses from viewing the phishing page and facilitates behind-the-scenes communication with the actual Microsoft 365 login page by posing as the victim.

    phishing-as-a-service

    “Working together, the phishing kit and the API perform a ‘man-in-the-middle’ attack, requesting information from the victim that the API will then submit to the legitimate login page in real time,” Pereira said.

    “This allows the PaaS affiliate to steal usernames and passwords, along with the authenticated session cookies if the victim uses MFA.”

    The findings come as Microsoft has begun enforcing number matching in Microsoft Authenticator push notifications as of May 8, 2023, to improve 2FA protections and fend off prompt bombing attacks.

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