Researchers reported Tuesday that they found two email phishing attacks targeting at least 10,000 mailboxes at FedEx and DHL Express that look to extract a user’s work email account.
In a blog released by Armorblox, the researchers said one attack impersonates a FedEx online document share and the other pretends to share shipping details from DHL. The phishing pages were hosted on free services such as Quip and Google Firebase to trick security technologies and users into thinking the links were legitimate.
According to the researchers, the two email attacks employed a broad range of techniques to get past traditional email security filters and pass the “eye tests” of unsuspecting end users:
Chris Hazelton, director of security solutions at Lookout, said there are few brands like FedEx and DHL (also UPS) that can quickly capture the attention of targets. With most people stuck at home – many recipients anticipate something they bought online being delivered to them. This includes business transactions where threat actors are mimicking delivery services to trick people into giving up credentials to their organization's cloud services.
“They want to get people to click what they think is a valid link and then present them with a fake login page that they will recognize,” Hazelton said. “If the fake page appears convincing enough, then many users will login without thinking about it. These are the risks of cloud services – while they are accessible from any browser, many users inherently trust login screens they recognize. Hackers will also send text messages instead of email because many users don't think about phishing attacks on mobile, so they're more likely to respond to a phishing text than email.”
Tom Pendergast, chief learning officer at MediaPro, added that Armorblox does a good job of identifying the technical details of this phish, but there’s also the human side and that’s the same old story: phishes preying on the trust humans place in known brands.
“People trust brands the way they trust friends—and thus they tend to overlook some oddities in behavior that they’d never accept from a ‘stranger,’” Pendergast said. “That’s why we have to be so diligent about not taking anything in our inbox or online at face value.”