Cybersecurity researchers are drawing consideration to a brand new marketing campaign that is utilizing reliable generative synthetic intelligence (AI)-powered web site constructing instruments like DeepSite AI and BlackBox AI to create reproduction phishing pages mimicking Brazilian authorities companies as a part of a financially motivated marketing campaign.
The exercise includes the creation of lookalike websites imitating Brazil’s State Division of Site visitors and Ministry of Schooling, which then trick unsuspecting customers into making unwarranted funds via the nation’s PIX cost system, Zscaler ThreatLabz mentioned.
These fraudulent websites are artificially boosted utilizing search engine marketing (website positioning) poisoning strategies to reinforce their visibility, thereby growing the chance of success of the assault.
“Supply code evaluation reveals signatures of generative AI instruments, corresponding to overly explanatory feedback meant to information builders, non-functional components that might sometimes work on an genuine web site, and tendencies like TailwindCSS styling, which is completely different from the standard phishing kits utilized by menace actors,” Zscaler’s Jagadeeswar Ramanukolanu, Kartik Dixit, and Yesenia Barajas mentioned.
The tip purpose of the assaults is to serve bogus kinds that accumulate delicate private data, together with Cadastro de Pessoas Físicas (CPF) numbers, Brazilian taxpayer identification numbers, residential addresses, and persuade them to make a one-time cost of 87.40 reals ($16) to the menace actors through PIX below the guise of finishing a psychometric and medical examination or safe a job provide.
To additional enhance the legitimacy of the marketing campaign, the phishing pages are designed such that they make use of staged information assortment by progressively requesting extra data from the sufferer, mirroring the conduct of the genuine web sites. The collected CPF numbers are additionally validated on the backend via an API created by the menace actor.
“The API area recognized throughout evaluation is registered by the menace actor,” Zscaler mentioned. “The API retrieves information related to the CPF quantity and mechanically populates the phishing web page with data linked to the CPF.”
That mentioned, the corporate famous that it is potential the attackers might have acquired CPF numbers and consumer particulars via information breaches or by leveraging publicly uncovered APIs with an authentication key, after which used the knowledge to extend the credibility of their phishing makes an attempt.
“Whereas these phishing campaigns are at present stealing comparatively small quantities of cash from victims, comparable assaults can be utilized to trigger way more harm,” Zscaler famous.
Mass mailing Marketing campaign Distributes Efimer Trojan to Steal Crypto
Brazil has additionally grow to be the main focus of a malspam marketing campaign that impersonates attorneys from a significant firm to ship a malicious script referred to as Efimer and steal a sufferer’s cryptocurrency. Russian cybersecurity firm Kaspersky mentioned it detected the mass mailing marketing campaign in June 2025, with early iteration of the malware relationship all the best way again to October 2024 and unfold through contaminated WordPress web sites.
“These emails falsely claimed the recipient’s area title infringed on the sender’s rights,” researchers Vladimir Gursky and Artem Ushkov mentioned. “This script additionally consists of extra performance that helps attackers unfold it additional by compromising WordPress websites and internet hosting malicious recordsdata there, amongst different strategies.”
Efimer, moreover propagating through compromised WordPress websites and electronic mail, leverages malicious torrents as distribution vector, whereas speaking with its command-and-control (C2) server through the TOR community. Moreover, the malware can prolong its capabilities with extra scripts that may brute-force passwords for WordPress websites and harvest electronic mail addresses from specified web sites for future electronic mail campaigns.
“The script receives domains [from the C2 server] and iterates via every one to seek out hyperlinks and electronic mail addresses on the web site pages,” Kaspersky mentioned, noting it additionally serves as a spam module engineered to fill out contact kinds on course web sites.
Within the assault chain documented by Kaspersky, the emails come fitted with ZIP archives containing one other password-protected archive and an empty file with a reputation specifying the password to open it. Current inside the second ZIP file is a malicious Home windows Script File (WSF) that, when launched, infects the machine with Efimer.
On the similar time, the sufferer is displayed an error message stating the doc can’t be opened on the gadget as a distraction mechanism. In actuality, the WSF script saves two different recordsdata, “controller.js” (the trojan element) and “controller.xml,” and creates a scheduled activity on the host utilizing configuration extracted from “controller.xml.”
The “controller.js” is a clipper malware that is designed to interchange cryptocurrency pockets addresses the consumer copies to their clipboard with the pockets handle below the attacker’s management. It could possibly additionally seize screenshots and execute extra payloads acquired from the C2 server by connecting over the TOR community after putting in a TOR proxy consumer on the contaminated pc.
Kaspersky mentioned it additionally found a second model of Efimer that, together with clipper options, additionally incorporates anti-VM options and scans net browsers like Google Chrome and Courageous for cryptocurrency pockets extensions associated to Atomic, Electrum, and Exodus, amongst others, and exfiltrates the outcomes of the search again to the C2 server.
The marketing campaign is estimated to have impacted 5,015 customers, primarily based on its telemetry, with a majority of the infections concentrated in Brazil, India, Spain, Russia, Italy, Germany, the U.Ok., Canada, France, and Portugal.
“Whereas its main purpose is to steal and swap cryptocurrency wallets, it will possibly additionally leverage extra scripts to compromise WordPress websites and distribute spam,” the researchers mentioned. “This permits it to determine an entire malicious infrastructure and unfold to new gadgets.”
“One other fascinating attribute of this Trojan is its try to propagate amongst each particular person customers and company environments. Within the first case, attackers use torrent recordsdata as bait, allegedly to obtain in style motion pictures; within the different, they ship claims in regards to the alleged unauthorized use of phrases or phrases registered by one other firm.”
