Cybercriminals Abusing Cloudflare R2 for Hosting Phishing Pages, Experts Warn

Danger actors’ use of Cloudflare R2 to host phishing internet pages has witnessed a 61-fold enhance in excess of the previous 6 months.

“The majority of the phishing strategies target Microsoft login qualifications, whilst there are some webpages concentrating on Adobe, Dropbox, and other cloud applications,” Netskope security researcher Jan Michael said.

Cloudflare R2, analogous to Amazon Web Services S3, Google Cloud Storage, and Azure Blob Storage, is a facts storage provider for the cloud.

The improvement will come as the overall number of cloud applications from which malware downloads originate has elevated to 167, with Microsoft OneDrive, Squarespace, GitHub, SharePoint, and Weebly using the top rated 5 spots.

The phishing strategies identified by Netskope not only abuse Cloudflare R2 to distribute static phishing internet pages, but also leverage the firm’s Turnstile supplying, a CAPTCHA substitution, to area these pages powering anti-bot limitations to evade detection.

In accomplishing so, it stops on the net scanners like urlscan.io from achieving the precise phishing site, as the CAPTCHA check final results in a failure.

As an added layer of detection evasion, the malicious web sites are created to load the articles only when particular problems are fulfilled.

“The malicious web site requires a referring web page to contain a timestamp soon after a hash image in the URL to exhibit the true phishing page,” Michael stated. “On the other hand, the referring website needs a phishing web page handed on to it as a parameter.”

In the occasion no URL parameter is passed to the referring web page, site visitors are redirected to www.google[.]com.

The enhancement will come a month soon after the cybersecurity organization disclosed particulars of a phishing marketing campaign that was identified hosting its bogus login webpages in AWS Amplify to steal users’ banking and Microsoft 365 qualifications, alongside with card payment aspects by means of Telegram’s Bot API.

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Some parts of this article are sourced from:
thehackernews.com