Cybercriminals are constantly coming up with new tactics for stealing credentials and other sensitive information. Phishing is one of the main ways that this is achieved, but most businesses have spam filters that block these malicious messages. If a phishing email is developed that can bypass email security measures and land in the inboxes of a business, there is a good chance that the emails will be clicked and at least some accounts can be compromised.
Spam filters such as SpamTitan incorporate a range of advanced measures for detecting phishing emails, including reputation checks of IP addresses, analyses of the message headers and bodies, and machine learning algorithms are used to determine the probability that an email is malicious. Dual anti-virus engines are used for detecting known malware, sandboxing is used to detect zero-day malware threats by analyzing the behavior of files, and hyperlinks in emails are scanned to determine if they are malicious.
To bypass email security solutions, threat actors may link a legitimate website in an email, such as providing a URL for SharePoint, Google Drive, Dropbox, or another legitimate platform. These URLs are more difficult to identify as malicious as these websites pass reputation checks. Malicious URLs on these platforms are often reported and are then blocked by email security solutions, but the URLs often change and are never used for long.
A campaign has recently been detected that uses this tactic and attempts to direct users to the genuine Facebook.com site, with the phishing emails containing a link to a Facebook post. The phishing email comes from a legitimate-looking domain – officesupportonline.com – and warns the user that some of the features of their Facebook account have been deactivated due to copyright-infringing material. Like many phishing emails, the user is told they must take urgent action to prevent the deletion of their account. In this case, they are threatened with the deletion of their account if there is no response within 48 hours.
A link is supplied to a post on Facebook.com that the user is required to click to appeal the decision. The post masquerades as a Facebook.com support page from Facebook Page Support, which provides a link to an external webpage that the user is required to click to “Appeal a Page Copyright Violation”. The URL includes the name of Facebook’s parent company, Meta, although the domain is actually meta.forbusinessuser.xyz – A domain that is not owned by Meta or Facebook. URL shortening services are used in these campaigns to hide the true URL.
If the user clicks the link they will be directed to a page that closely resembles the genuine Facebook copyright appeal page. In order to appeal the decision, the user must complete a form that asks for their full name, email address, phone number, and Facebook username. If that information is submitted through the form, geolocation information is also collected along with the user’s IP address, and the information is sent to the scammer’s Telegram account.
The next stage of the scam sees the user redirected to another page where they are asked to provide a 6-digit one-time password, which they are told is required when a user attempts to sign into their account from a new device or browser. This is a fake 2-factor authentication box, and if the user enters any 6-digit code it will produce an error, but the code entered will be captured by the attacker. The user will be directed to the genuine Facebook site if they click the “need another way to authenticate?” option on the page.
Campaigns such as this highlight the importance of layered defenses. Spam filters are effective at blocking the majority of spam and phishing emails, but some messages will bypass spam filters and will be delivered to inboxes. One of the best ways to augment your phishing defenses is to provide security awareness training to your workforce, and this is key to combatting new phishing tactics such as this Facebook phishing scam.
Employees should be taught how to identify phishing attempts and what to do if a potentially malicious email is received. In addition to providing training, phishing simulations should be conducted on the workforce to give employees practice at identifying phishing threats while they are completing their usual work duties. If a simulation is failed, the employee can be told what went wrong and how they could identify similar threats in the future.
TitanHQ offers businesses a comprehensive security awareness training and phishing simulation platform called SafeTitan. The platform includes an extensive range of training content on all aspects of security, and a phishing simulation platform with hundreds of phishing templates taken from real-world phishing attacks. SafeTitan automates the provision of training and is the only behavior-driven security awareness training platform that delivers intervention training in real-time in response to security mistakes by employees, ensuring training is provided at the time when it is likely to be most effective at changing employee behavior.