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

December 26, 2022TPI Corporation listed by Avoslockeron the group's public leak site

Data size: 1 TB

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 2,640 disclosures indexed across all operators we track.

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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TPI Corporation

Claimed by Avoslocker · listed 3 years ago

1 TB

Data size

41m

Age

since listed · data leaked

Status timeline

Listed
Dec 26, 2022
Data leaked

At a glance

Group: Avoslocker
Status: Data leaked
Sector: Business Services
Listed on leak site: Dec 26, 2022
Data size: 1 TB

About the victim

AI dossier — public-source company profile

TPI Corporation (also referenced as TPI Fostoria Corporation in leaked documents) appears to be an industrial manufacturing and engineering company engaged in projects involving process heat equipment, custom paper tubes, and NVH (noise, vibration, harshness) engineering. The company has business relationships with firms such as Federal Mogul and ProcessHeat, suggesting involvement in industrial or automotive-adjacent manufacturing. Its Fostoria-referenced entity suggests operations in the Midwest United States.

Industry: Industrial Manufacturing & Engineering

Attack summary

Severity: critical — Confirmed exfiltration and public publication of approximately 1 TB of data encompassing regulated financial records (IRS documents, financial statements), confidential legal agreements, personally identifiable contact information, and sensitive business communications, with proof files already released publicly.

AvosLocker claims to have exfiltrated approximately 1 TB of confidential data from TPI Corporation, including NDA agreements, financial statements, IRS notices, legal documents, accounting records, email archives, and engineering project files, and has published a sample archive (TPI-Part1.zip) containing proof files for public review.

critical

Data the group says was taken

AI dossier — extracted from the leak post

NDA agreements
Financial statements
IRS notices
Email archives (.msg files)
Private business communications
Engineering project files
Legal statements
Accounting statements
Insurance distribution documents
Bankruptcy-related documents
Employee/contact personal information

The group's post references roughly 11 proof files.

What the group claims

Data Stolen: ~1TB of confidential data were NDA-agreemtents, email-bases, private conversations .msg, financial statements, IRS, confidential business information, engineering projects, legal statements, accounting statements etc. We uploaded small size of Stolen data in TPI-Part1.zip archive for public review: 2022-03-31 TPI Financial STMTS.pdf 2021-08-30 IRS CP216F Notice.pdf 2021-03-31 Mutual NDA - Hearn TPIFostoria Corporation v1.0 (Executed).pdf 2021-03-31 Headliner NVH Project.msg 2020-07-10 Mission National Ins. Co, 2020 Distribution.pdf 2020-03-16 Oliver's of Oregon Bankruptcy.pdf 2019-02-22 ProcessHeat - Project Thermo Countersigned CA - TPI.pdf 2019-02-15 TPICorpFostoriaProcessEquipment&CustomPaperTubesouthwest-Mutual Non-disclosure Agreement.msg 2013-04-15 Federal Mogul Mutual Confidentiality Agreement.pdf 2012-12-21 Emitted Energy Corp Mutual Non-Disclosure Agreement.pdf Peter Wang Contact Info.pdf

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.