Disclosure context

About Nokoyawa

Nokoyawa is a ransomware group that emerged in December 2022, operating with primarily financial motivations and targeting organizations across multiple sectors including healthcare, non-profit, education, finance, and energy. The group has claimed at least 36 victims since its emergence, with attacks predominantly focused on the United States, Canada, United Kingdom, France, and the Philippines. While detailed technical analysis of Nokoyawa's operations remains limited in public reporting, the group appears to follow conventional ransomware tactics targeting critical infrastructure and essential services sectors. Their targeting of healthcare and educational institutions suggests they operate without the sector restrictions that some other ransomware groups have adopted. Notable campaigns include attacks across their preferred geographic regions, though specific high-profile incidents have not been extensively documented in public threat intelligence reporting from major security firms. As of current reporting, Nokoyawa appears to remain an active threat, though the group's relatively recent emergence means long-term operational patterns and potential law enforcement disruption efforts are still developing. The group has been linked to 36 public disclosures across our corpus. First observed on a leak site on December 9, 2022; most recent post October 8, 2023. The operation is currently inactive.

Timeline of this disclosure

May 23, 2023ePerformax listed by Nokoyawaon the group's public leak site

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. Geographically, ePerformax 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

← All victims

ePerformax

Claimed by Nokoyawa · listed 3 years ago

36m

Age

since listed · data leaked

Status timeline

Listed
May 23, 2023
Data leaked

At a glance

Group: Nokoyawa
Status: Data leaked
Country: United States
Sector: Business Services
Listed on leak site: May 23, 2023

About the victim

AI dossier — public-source company profile

ePerformax (EPX) is a Philippines-based contact center outsourcing company founded in 1988 as the Performance Consulting Group by Teresa Hartsaw in Memphis, TN. Operating in the Philippines since 2002 across three locations, the company employs approximately 7,500 staff and provides end-to-end customer contact, training, and engagement solutions to Fortune 500 clients on an outsourced basis. EPX holds PCI, HIPAA, and SOC 2 Type 2 certifications and serves clients in financial technology, telecommunications, and lending sectors.

Industry: Contact Center & Customer Service Outsourcing
Employees: 5001-10000
Founded: 1988

Attack summary

Severity: critical — ePerformax is HIPAA and PCI certified, meaning it handles regulated health and financial payment data on behalf of Fortune 500 clients. Data has been confirmed published by the threat actor, indicating successful exfiltration of potentially large-scale regulated and sensitive PII across multiple enterprise client environments.

The Nokoyawa ransomware group claims to have attacked ePerformax 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.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Customer contact data
Client business records
Employee records
Potentially HIPAA-regulated health data
PCI-scoped financial/payment data
SOC 2-covered operational data

What the group claims

In 1988 the Performance Consulting Group was founded by Teresa Hartsaw in Memphis, TN as a marketing, training, customer contact and customer engagement company focused on providing end-to-end customer contact solutions for clients on an outsourced basis. The company's goal was simple - to maximize...

Sources

Victim siteeperformax.com
Leak posthttp://nokoleakb76znymx443veg4n6fytx6spck6pc7nkr4dvfuygpub6jsid.onion/leak/645f7c0f48843000772d6bd1

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.