Still under development, Bluekit provides users with automated domain registration and an AI Assistant.

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Threat actors are reusing Tycoon 2FA tools across other phishing kits following the platform’s disruption.

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Threat hunters and researchers are racing to contain a wave of voice-phishing attacks targeting single sign-on tools, already leading to data theft and extortion attempts. Multiple cybercrime groups are combining voice calls and advanced phishing kits to trick victims into handing over access — including a group identifying itself as ShinyHunters, which has publicly named alleged targets and posted samples of stolen data.

The attacks share common characteristics with previous campaigns attributed to ShinyHunters, which has abused third-party vendors to gain initial access to multiple company networks, including the attack spree that impacted more than 700 Salesforce customer environments last fall.

“Mandiant is tracking a new, ongoing ShinyHunters-branded campaign using evolved voice phishing techniques to successfully compromise SSO credentials from victim organizations, and enroll threat actor controlled devices into victim multifactor authentication solutions,” Charles Carmakal, chief technology officer at Mandiant Consulting, said in an email to CyberScoop.

“This is an active and ongoing campaign,” Carmakal added. “After gaining initial access, these actors pivot into SaaS environments to exfiltrate sensitive data. An actor that identifies as ShinyHunters has approached some of the victim organizations with an extortion demand.”

Cybercriminals are registering custom domains that mimic legitimate single sign-on portals used by targeted companies, then deploying tailored voice-phishing kits to call victims while remotely controlling which pages appear in the victim’s browser. This lets the attackers sync their spoken prompts with multifactor-authentication requests in real time, increasing the likelihood the victim approves or enters the needed codes on cue.

Okta, one of the single sign-on providers targeted by this campaign, released threat intelligence on phishing kits observed in this campaign and others Thursday. Attackers appearing to be aligned with ShinyHunters have attempted to extort targeted organizations on behalf of a specific initial access broker that used one of these phishing kits.

Brett Winterford, vice president at Okta Threat Intelligence, said researchers have observed at least two phishing kits that demonstrate the real-time capability to mimic the authentication flows of identity providers. 

“This creates a more compelling pretext for asking the user to share credentials and accept multifactor authentication challenges,” he told CyberScoop.

“Okta Threat Intelligence has observed multiple phishing kits developed for the needs of voice phishing operators, each with dedicated panels for impersonation of Google, Microsoft and Okta sign-in flows, as well as cryptocurrency providers,” Winterford added.

A spokesperson for Microsoft said the company has nothing to share on the campaign. Meanwhile, a Google spokesperson said: “At this time, we have no indication that Google itself or its products are affected by this campaign.”

Security experts noted the attacks don’t involve a vulnerability in single sign-on vendors’ products or infrastructure, but rather a persistent weak point in identity and access management. Targeted victims are once again being duped into sharing their credentials with attackers.

These phishing kits allow cybercriminals without deep technical skills to buy the tooling and focus on targeting people and processes, said Cynthia Kaiser, senior vice president of Halcyon’s ransomware research center. 

“While these campaigns occur often, the difference here is the amount of success in the recent campaign is slightly higher. That’s likely because of the believable content and the use of voice phishing versus just phishing,” she said.

“If you’re getting a call and it’s personalized and it’s changing in real time — that feels believable, that’s a different element that people don’t necessarily have their guard up for.”

Investigation ongoing into scope

It’s unclear how many organizations have been impacted by the campaign. A ShinyHunters-branded data leak site, which is currently down, previously listed at least three victims, including two companies that publicly confirmed they were impacted by recent attacks.

SoundCloud said some personally identifiable data on about 20% of its user base, roughly 36 million people, was compromised by an attack it first discovered in mid-December. The company insists sensitive data wasn’t exposed and did not name the attackers, but said users, employees and partners have been flooded with threatening emails. 

“We are aware that a threat actor group has published data online allegedly taken from our organization,” Sade Ayodele, senior director of communications at SoundCloud, said in an email. “Our security team — supported by leading third-party cybersecurity experts — is actively reviewing the claim and published data.”

Betterment, a financial services company, said an attacker gained access to some of its systems via social engineering on Jan. 9. The company said customer data was stolen, but no accounts were accessed and customer credentials weren’t compromised.

The attacker also quickly used access to Betterment’s systems to send a fraudulent cryptocurrency offer to some customers. Betterment did not respond to a request for comment.

Threat intelligence suggests additional victims have been targeted and potentially impacted. Sophos researchers are tracking a cluster of about 150 malicious domains established starting last month, including some used in voice phishing campaigns resulting in data theft and ransom notes demanding a payment, said Rafe Pilling, director of threat intelligence at Sophos Counter Threat Unit.

“We can’t confirm that they have all been used but the threat actors are creating target-specific domains, themed to reflect single-sign on services and impersonating authentication providers like Okta,” Pilling said. The fake domains impersonate organizations in the education, real estate, energy, financial services and retail sectors.

While one of the groups behind this campaign identifies itself as ShinyHunters, researchers have yet to confirm that claim or formally attribute the attacks to a specific group or person. 

“ShinyHunters typically has a mix of real victims and recycled information or exaggerated claims,” Kaiser said. 

Moreover, the names adopted or reused by some cybercriminals has lost relevance, said Ian Gray, vice president of intelligence at Flashpoint. 

A cybercriminal or group can use any username they choose and apply that to a data-leak site, but that doesn’t prove a direct link. 

“While ShinyHunters have claimed credibility for the campaign,” Gray said, “it is equally important that we examine the tactics, techniques and procedures being employed and how they relate to previous campaigns.”

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The phishing kit Lighthouse, which has aided text scams like those soliciting victims to pay unpaid road tolls, appears to have been hampered shortly after Google filed a lawsuit aimed at its creators.

Google said on Thursday that Lighthouse had been shut down. Two other organizations that have tracked the suspected Chinese operators of Lighthouse said they saw signs it had at least been disrupted.

“This shut down of Lighthouse’s operations is a win for everyone,” said Halimah DeLaine Prado, general counsel at Google. “We will continue to hold malicious scammers accountable and protect consumers.”

Members of the syndicate, known to some by the name Smishing Triad, had been corresponding on Telegram channels.

“We can confirm that all Lighthouse Telegram channels previously tracked have been deleted or taken down due to Telegram TOS violations,” Kasey Best, the director of threat intelligence at Silent Push, told CyberScoop. “We are tracking many websites still active and using Lighthouse kit code, as well as phishing kits used by other Smishing Triad threat actors, but there could be backend changes with Lighthouse or other disruptions in this criminal ecosystem which are just starting to be seen.

“Either way, this is a positive sign for Google’s lawsuit, and we look forward to increased pressure against smishing threat actors based mostly in China,” Best continued.

Ford Merrill, lead researcher at SecAlliance, told CyberScoop that it “can confirm that several domains historically associated with Lighthouse infrastructure appear to no longer be resolving to DNS requests at present.”

Google filed its lawsuit in the U.S. District Court for the Southern District of New York. They allege that 25 unnamed individuals behind Lighthouse have violated racketeering, trademark and anti-hacking laws with their prolific SMS phishing, or “smishing,” platform.

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Google on Wednesday filed a lawsuit against pesky text message scammers — like those who flood targets with notices that they have unpaid road tolls, or have a package waiting — in an attempt to disrupt a “phishing for dummies” operation the company accuses of victimizing more than 1 million people.

The lawsuit against 25 unnamed individuals believed to reside in China takes aim at those behind the phishing-as-a-service kit known as Lighthouse and its “staggering” scale.

“Defendants are a group of foreign cybercriminals who have engaged in relentless phishing attacks against millions of innocent victims, including Google customers, to steal personal and financial information,” the lawsuit filed in the U.S. District Court for the Southern District of New York reads. “These attacks have collectively swindled innocent victims out of millions of dollars and harmed Google through the unauthorized use of its trademarks and services.”

Google alleges that the defendants violated multiple laws in their SMS phishing, or “smishing,” operation: the Racketeer Influenced and Corrupt Organizations Act, the Lanham Act that governs trademark law and the main federal anti-hacking statute, the Computer Fraud and Abuse Act. Some of the smishing messages make use of Google product logos, and target Google customers.

The civil suit seeks a temporary restraining order and damages against the unnamed individuals. Google is asking the court to compel hosting providers to block Lighthouse-connected IP addresses and fraudulent domains from using those services. The company also hopes that it can help raise user awareness by filing the suit.

Other organizations have tracked the scope of Lighthouse and its ilk. One firm found that in a 20-day period, 200,000 Lighthouse-created websites attracted more than 1 million victims in 121 countries.

Another said that between July 2023 and October 2024, Chinese smishing syndicates compromised between 12.7 million and 115 million payment cards in the United States alone.  Over that same timeframe, Google’s suit states, Lighthouse users also launched 32,094 distinct U.S. Postal Service phishing sites.

“The scam is simple: criminals send a text message, prompting recipients to click a link and share information such as email credentials, banking information and more,” Google explained in a blog post announcing the suit. “They exploit the reputations of Google and other brands by illegally displaying our trademarks and services on fraudulent websites.”

In addition to the lawsuit, Google on Wednesday endorsed three bills from House and Senate members to combat fraud. Those bills are the Guarding Unprotected Aging Retirees from Deception (GUARD) Act, which would permit state and local law enforcement to use federal grants to investigate financial scams aimed at retirees; the Foreign Robocall Elimination Act, which would create a task force to fight foreign-originated robocalls; and the Scam Compound Accountability and Mobilization (SCAM) Act, which would direct an executive branch national strategy to counter scam compounds.

“Legal action can address a single operation; robust public policy can address the broader threat of scams,” Halimah DeLaine Prado, general counsel for Google, wrote in the blog post.

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