Disclosure context

About Avoslocker

**Overview**: AvosLocker is a financially motivated ransomware group that emerged in June 2021, operating as both a Ransomware-as-a-Service (RaaS) platform and conducting direct attacks against organizations worldwide. The group has demonstrated sophisticated capabilities and has targeted over 70 victims across multiple critical sectors. **Origin & Affiliation**: While the exact country of origin remains unclear, AvosLocker operates as a RaaS model, recruiting affiliates to conduct attacks using their ransomware payload and infrastructure. The group has shown no clear ties to state-sponsored activities, appearing to be purely profit-driven cybercriminals. **Attack Methodology**: AvosLocker typically gains initial access through compromised Remote Desktop Protocol (RDP) credentials, VPN vulnerabilities, and phishing campaigns, subsequently deploying tools like Cobalt Strike for lateral movement and persistence. The group employs double extortion tactics, stealing sensitive data before encrypting systems and threatening to publish the information on their leak site if ransom demands are not met. Their ransomware uses strong encryption algorithms and includes capabilities to terminate security processes and delete shadow copies to prevent recovery. **Notable Campaigns**: The group has particularly targeted critical infrastructure sectors including education, manufacturing, finance, healthcare, and transportation, with significant attacks reported against organizations in the United States, Germany, Singapore, Canada, and France. CISA and FBI have issued joint advisories warning about AvosLocker's targeting of critical infrastructure, highlighting the group's impact on essential services. **Current Status**: As of recent threat intelligence reporting, AvosLocker remains active, continuing to recruit affiliates and conduct ransomware operations against organizations globally. The group has been linked to 70 public disclosures across our corpus. First observed on a leak site on June 13, 2021; most recent post February 11, 2023. The operation is currently inactive.

Also tracked as: Avos.

Timeline of this disclosure

February 11, 2023Cambian Group listed by Avoslockeron the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 1,779 disclosures indexed across all operators we track. Geographically, Cambian Group 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

← All victims

CareTech Holdings PLC (parent of Cambian Group)

listed as Cambian Group · Claimed by Avoslocker · listed 3 years ago

39m

Age

since listed · data leaked

Status timeline

Listed
Feb 11, 2023
Data leaked

At a glance

Group: Avoslocker
Status: Data leaked
Country: United Kingdom
Sector: Healthcare
Listed on leak site: Feb 11, 2023

About the victim

AI dossier — public-source company profile

CareTech Holdings PLC is a UK-based social care and education provider established in 1993, delivering specialist support services to children and adults with complex needs across a portfolio of brands including Cambian Group and ByTheBridge. The group operates homes, schools, and therapeutic services throughout the UK. It is described as a billion-dollar corporation with tens of thousands of vulnerable individuals supported across its services.

Industry: Specialist Social Care & Education (Children and Adults)
Address: United Kingdom
Founded: 1993

Attack summary

Severity: critical — The attack targets a large UK social care provider supporting vulnerable children and adults with complex needs across multiple subsidiaries. The disclosed status is 'data_published', indicating confirmed exfiltration and release of data that is highly likely to include sensitive personal and care-related records about vulnerable individuals — a category of regulated, sensitive PII at scale in a healthcare/social care context.

AvosLocker claims to have attacked CareTech Holdings PLC and its subsidiaries (Cambian Group and ByTheBridge), with data published, indicating exfiltration of data belonging to multiple entities within the group including services supporting vulnerable children and adults. No ransom amount was stated and no specific data volume was disclosed.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Data relating to Cambian Group
Data relating to ByTheBridge
Data relating to CareTech Holdings PLC
Potentially sensitive records of vulnerable children and adults
Corporate and operational business data

What the group claims

Includes data from Care Tech Holdings PLC (parent holding company, caretech-uk.com) & ByTheBridge.co.uk & Cambian Group. A billion dollar mega-corporation and British orphans, what could go wrong?

Sources

Victim sitecaretech-uk.com

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.