The FBI is investigating an attack on its own systems after ShinyHunters claimed responsibility for the incident, putting the prolific cybercrime group in the most direct conflict yet with agents responsible for investigating data extortion attacks.

The Monday breach, first reported by 404 Media, allowed ShinyHunters to temporarily deface the FBI jobs site. The group claimed it stole “very sensitive data on almost all FBI agents and individuals who filed an application with the FBI for a job,” in a lengthy post on its data-leak site.

“The FBI is aware of claims regarding unauthorized activity affecting FBIjobs.gov and is currently investigating,” a spokesperson for the agency said in a statement.

An alert on the FBI jobs site notes that apply.fbijobs.gov and the Special Agent Application Portal are currently unavailable.

The attack marks a sobering escalation by ShinyHunters, a notorious group that previously targeted major cloud platforms, healthcare organizations, universities, technology companies, retailers and education service providers. Previous victims of ShinyHunters this year include Instructure, Salesforce, Snowflake and McKesson.

“The ShinyHunters ransomware group appears to be actively trying to put a target on their back,” Cynthia Kaiser, senior vice president at Halcyon’s ransomware research center, told CyberScoop. 

ShinyHunters claims it targeted the FBI in response to a public service announcement it says contains false allegations about the group. The FBI issued the PSA following ShinyHunters’ May attack on Instructure, the company behind Canvas, a widely used central hub for K-12 and university coursework, exams and communication. 

The group responded with its own “PSA” on its data-leak site, insisting it is not affiliated with The Com, has never conducted swatting attacks or claimed it had sensitive or compromising information, including embarrassing photos or videos, to extort victims. 

The PSA was addressed to Brett Leatherman, assistant director of the FBI’s cyber division, and FBI Director Kash Patel. 

“While ShinyHunters has in the past been hyperbolic about the criticality of the data they’ve accessed, the group has established itself as a legitimate threat,” Flashpoint analysts told CyberScoop. 

“This attack benefits ShinyHunters by bolstering their reputation as a credible threat,” the analysts added. “In the group’s statement on their leak site regarding the breach, they portray the FBI’s PSA as an “attempt to ‘disrupt’ our operations and hinder clients’ trust in our organization hoping nobody pays us.”

The threat group typically uses social engineering, abuses weaknesses in identity systems or exploits vulnerabilities to gain access to cloud-hosted environments containing troves of sensitive or proprietary data, which it threatens to leak if the victim doesn’t pay a ransom.

ShinyHunters doesn’t appear to be seeking a payoff in this case, but rather a bid to coerce the FBI into amending or removing the May PSA. The group didn’t make any direct threat in the data-leak site post to release the stolen data, but it set a deadline of one week for action.

That coercive approach toward the FBI could backfire, according to experts. 

“Ransomware groups are largely successful because they operate like businesses,” said Kaiser, a former deputy assistant in the FBI’s cyber division. “Targeting other criminal groups or law enforcement — especially in ways intended to publicly shame — demonstrates a lack of discipline that historically has led to takedowns, takeovers or defections.”

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McKesson said its business and distribution centers remain operational in the wake of a cyberattack it disclosed Friday that resulted in data theft and temporary service interruptions.

Attackers gained access to some of the health care vendor’s third-party applications and stole data associated with a subset of customers in the company’s oncology, multispecialty and medical-surgical business units, Francisco Fraga, chief information and technology officer at McKesson, said in a statement Saturday. 

McKesson is a major player in the healthcare sector, claiming it distributes about one-third of all pharmaceuticals used throughout North America. It reported $403.4 billion in revenue for the one-year period ending in March. 

The company’s size and critical role it serves also makes it a high-profile target for cybercriminals. McKesson did not identify the group behind the attack, but ShinyHunters, a cybercrime group known for targeting large organizations with extortion demands after stealing massive amounts of sensitive data, claimed responsibility.

The company declined to answer questions about ShinyHunter’s claims. Yet, on Friday, McKesson disclosed the attack in a regulatory filing while ShinyHunters added the company to its data-leak site. 

McKesson said it discovered the attack Aug. 25. A period of widespread data theft was over by then, following a four-day intrusion beginning Aug. 21, according to researchers.

“Upon discovery, we immediately activated our incident response protocols, launched an investigation, and engaged leading cybersecurity industry experts to support our response,” Fraga said in a statement. 

“We have reasonable assurance of no ongoing unauthorized activity in our systems. Customers can continue to connect to and use our systems and services as intended,” he added. 

While McKesson’s investigation continues, it faces a more urgent deadline of Sept. 1 from ShinyHunters, which is reportedly seeking a ransom demand in excess of $55 million. 

The company did not answer questions about any ransom demand or whether it responded to the alleged attackers. 

The circumstances of the attack against McKesson are similar to other recent victims of ShinyHunters. The threat group typically uses social engineering or abuses weaknesses in identity to gain access to cloud-hosted environments containing troves of sensitive or proprietary data, which it threatens to leak if the victim doesn’t pay a ransom. 

“Opportunistic data extortionists have been able to identify weaknesses within identity and access management, making these campaigns both cheap and scalable,” said Ian Gray, vice president of cyber threat intelligence at Flashpoint. 

“These attacks are particularly difficult to detect early because they often occur entirely within vendor-hosted environments using valid, socially-engineered credentials,” he added. “Since this activity mimics normal support or data-warehouse tasks, it typically doesn’t trip traditional malware alerts or show anomalies, meaning organizations often remain unaware of the breach until the extortionists make contact.”

Researchers have linked ShinyHunters to multiple attack sprees targeting major cloud platforms, including Oracle, Salesforce and Snowflake. The decentralized crew of cybercriminals was also linked to an expansive compromise last summer impacting hundreds of Salesloft Drift customers that put any platform integrated with the AI chat agent at risk as well. 

In April, ShinyHunters broke into the systems of Canvas — a central hub for K-12 and university coursework, exams, grades and communication — causing widespread outages and data theft. When an early deadline passed without payment, ShinyHunters escalated its pressure on Instructure, the company behind Canvas, by defacing the platform’s login pages with an extortion message that was visible to hundreds of schools.

Instructure ultimately relented and said it reached an agreement with the cybercriminals, insisting the stolen data was returned with assurances that other copies were destroyed.

The FBI issued a public service announcement about ShinyHunters days later, warning potential downstream victims of the threat group’s pressure tactics and claims.

In late July, less than a month before McKesson was hit, Health-ISAC warned organizations in the sector of an increase in successful attacks by ShinyHunters.

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