Was Kellerhals Ferguson Kroblin PLLC hit by ransomware?

Kellerhals Ferguson Kroblin PLLC was listed by the BianLian ransomware operation (United States), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the BianLian ransomware group?

BianLian is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the Kellerhals Ferguson Kroblin PLLC breach?

BianLian published data attributed to Kellerhals Ferguson Kroblin PLLC. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Kellerhals Ferguson Kroblin PLLC

Claimed by BianLian · listed 2 years ago

20m

Age

since listed · data leaked

Status timeline

ListedNov 21, 2024
Data leakeddate unknown

At a glance

Group: BianLian
Status: Data leaked
Country: United States
Listed on leak site: Nov 21, 2024

About the victim

AI dossier — public-source company profile

Kellerhals Ferguson Kroblin PLLC is a full-service law firm with offices in the U.S. Virgin Islands and New York. The firm serves a diverse client base including investment managers, real estate developers, governments, high-tech manufacturers, e-commerce businesses, commercial tour operators, restaurants, and major banking and financial institutions.

Industry: Legal Services
Address: U.S. Virgin Islands and New York, New York

Attack summary

Severity: high — Law firm breach with confirmed data exfiltration and publication. Clients include financial institutions and government entities, indicating access to sensitive financial, legal, and potentially government-related information. Legal privilege documents and client confidentiality are at risk.

BianLian claims to have breached Kellerhals Ferguson Kroblin PLLC and exfiltrated data. The group has published data from the firm without disclosing specific details of the attack method or precise data categories compromised.

high

Data the group says was taken

AI dossier — extracted from the leak post

client communications
legal documents
financial records
business information

What the group claims

Kellerhals Ferguson Kroblin PLLC (KFK) a full service law firm with offices in the U.S. Virgin Islands and New York, New York. KFK clients include investment managers, real estate developers, governments, high-tech manufacturers, e-commerce businesses, commercial tour operators, restaurant proprietors, as well as many large banking and financial institutions.

Sources

Victim sitekellfer.com
Leak posthttp://bianlianlbc5an4kgnay3opdemgcryg2kpfcbgczopmm3dnbz3uaunad.onion/companies/kellfer.com/

Source

Indexed 2 years ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

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Disclosure context

About BianLian

**Overview:** BianLian is a financially motivated ransomware group that emerged in July 2022, quickly establishing itself as a significant threat to organizations across multiple sectors. The group operates with a primary focus on extorting victims for financial gain through data encryption and exfiltration tactics. **Origin & Affiliation:** While the exact country of origin remains unconfirmed by public reporting, BianLian appears to operate as an independent ransomware group rather than following a traditional Ransomware-as-a-Service model. Security researchers have not established definitive links between BianLian and other known ransomware families or cybercriminal organizations. **Attack Methodology:** BianLian typically gains initial access through compromised Remote Desktop Protocol (RDP) credentials and exploits of public-facing applications, according to security researchers. The group employs double extortion tactics, stealing sensitive data before encrypting victim systems, and threatens to publish exfiltrated information on their leak site if ransom demands are not met. Their operations demonstrate sophisticated understanding of network environments and data exfiltration techniques. **Notable Campaigns:** Since its emergence, BianLian has successfully compromised over 670 organizations globally, with documented cases spanning critical infrastructure and major corporations across their primary target sectors. The group has been particularly active in targeting healthcare organizations, prompting attention from cybersecurity agencies due to the critical nature of these attacks. **Current Status:** As of recent threat intelligence reporting, BianLian remains an active ransomware threat, continuing to target organizations primarily in the United States, United Kingdom, Canada, India, and Australia. The group has been linked to 668 public disclosures across our corpus. First observed on a leak site on July 14, 2022; most recent post March 31, 2025. The operation is currently inactive.

Also tracked as: Hydra.

Timeline of this disclosure

November 21, 2024Kellerhals Ferguson Kroblin PLLC listed by BianLianon the group's public leak site

Other recent disclosures by BianLian

BianLian has been linked to 668 public victims on Darkfield. A sample of the most recent:

See the full BianLian dossier →

Sector and geography

Geographically, Kellerhals Ferguson Kroblin PLLC is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by BianLian means Kellerhals Ferguson Kroblin PLLC appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, CISA (United States), as required for your jurisdiction.
Monitor for the data appearing on BianLian's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.