Disclosure context

About Cryptbb

Cryptbb is a relatively obscure ransomware group that emerged in September 2023, appearing to be financially motivated based on their operational patterns. Little is publicly documented about their origin or potential affiliations, though their limited scale of operations with only 8 known victims suggests they operate as a smaller independent group rather than a sophisticated ransomware-as-a-service operation. Their attack methodology and specific technical capabilities remain largely undocumented in public threat intelligence reporting, with no detailed analysis available from major security firms regarding their initial access vectors, encryption methods, or whether they employ data exfiltration tactics. The group has demonstrated a geographic focus primarily targeting victims across the United States, United Kingdom, India, and Poland, though no specific high-profile campaigns or notable incidents have been publicly reported by law enforcement or security researchers. Given the limited public reporting and recent emergence, Cryptbb appears to remain a low-profile threat actor with current activity status unclear due to insufficient public documentation. The group has been linked to 8 public disclosures across our corpus. First observed on a leak site on September 15, 2023; most recent post September 20, 2023. The operation is currently inactive.

Timeline of this disclosure

September 15, 2023KIRWIN FRYDAY MEDCALF Lawyers LLP listed by Cryptbbon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Real Estate sector. Geographically, KIRWIN FRYDAY MEDCALF Lawyers LLP is reported in United Kingdom, a country with 902 ransomware disclosures in our corpus.

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.

Ransomware victim disclosure

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KIRWIN FRYDAY MEDCALF Lawyers LLP

Claimed by Cryptbb · listed 3 years ago

32m

Age

since listed · data leaked

Status timeline

Listed
Sep 15, 2023
Data leaked

At a glance

Group: Cryptbb
Status: Data leaked
Country: United Kingdom
Sector: Real Estate
Listed on leak site: Sep 15, 2023

About the victim

AI dossier — public-source company profile

Kirwin Fryday Medcalf Lawyers LLP is a UK-based law firm providing a full range of real estate legal services including residential and commercial sales, purchases, and mortgages. The firm also offers corporate commercial services such as business incorporation, acquisition and sale of small businesses, and general business advisory support. No further details on size or location are publicly available from the leak post.

Industry: Legal Services – Real Estate & Corporate Commercial Law

Attack summary

Severity: critical — A law firm handling real estate transactions and corporate commercial matters holds highly sensitive regulated data including client PII, financial records, property transaction details, and confidential legal communications. The disclosed status is data_published, meaning exfiltrated data has already been released, posing serious risk of harm to clients and potential legal/regulatory consequences under UK GDPR.

The Cryptbb ransomware group claims to have published data belonging to Kirwin Fryday Medcalf Lawyers LLP, with the disclosure status recorded as data_published, indicating exfiltration and release of firm data. The specific nature and volume of the published data are not detailed in the post.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Client legal files
Real estate transaction records
Mortgage documentation
Corporate incorporation records
Business acquisition/sale documents
Client PII

What the group claims

The company provide a full range of services in real estate law including residential and commercial sales, purchases and mortgages. The firm also provides comprehensive services in the corporate commercial area including incorporation of businesses, both large and small, acquisition and sales of small businesses and generally assisting our clientele to grow and prosper

Sources

Leak posthttp://basemmnnqwxevlymli5bs36o5ynti55xojzvn246spahniugwkff2pad.onion/company/7890164

Source

Indexed 3 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.