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, 2023Memtech Acoustical listed by Avoslockeron the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Construction sector, which has 415 disclosures indexed across all operators we track. Geographically, Memtech Acoustical is reported in United States, a country with 7,392 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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Memtech Acoustics

listed as Memtech Acoustical · 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 States
Sector: Construction
Listed on leak site: Feb 11, 2023

About the victim

AI dossier — public-source company profile

Memtech Acoustics is a Michigan-based (phone area code 248) provider of integrated acoustic solutions, specializing in engineered noise and vibration control products, system design, and professional services for commercial, industrial, government, healthcare, and environmental applications. The company has over 25 years of client service history and more than 50 years of combined engineering experience, having completed 2,000+ projects. They serve Fortune 500 firms, manufacturers, municipalities, and developers across the United States.

Industry: Engineered Noise & Vibration Control Products and Services
Employees: 11-50

Attack summary

Severity: high — Data has been confirmed published by the threat actor, indicating successful exfiltration of business data. The company serves government, healthcare, and Fortune 500 clients, raising the potential sensitivity of project and client records, though no explicit regulated PII at scale is confirmed.

Avoslocker claims to have compromised Memtech Acoustical and has published data (disclosed status: data_published), indicating exfiltration of company data; no ransom amount or specific data volume was stated in the post.

high

Data the group says was taken

AI dossier — extracted from the leak post

Internal business documents
Client project records
Engineering and design files
Procurement and vendor data
Employee records

What the group claims

Memtech Acoustical is your 'one-stop' source for acoustic services, noise control and acoustic material installation. There is no need to coordinate consultants, order materials and arrange for installation. Memtech does it all. Memtech Acoustical Industrial, Commercial, and Acoustic Noise Control Solutions

Sources

Victim sitememtechacoustical.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.