Disclosure context

About payload

Based on the limited publicly available information, Payload is an emerging ransomware group first observed in February 2026 with a primarily financial motivation, having targeted 19 documented victims across multiple countries and sectors. The group's origin and affiliations remain unclear, with no documented evidence of their operational structure, country of origin, or whether they operate as a Ransomware-as-a-Service model or independent entity. Their attack methodology, encryption techniques, and specific tools used have not been publicly documented by major cybersecurity firms or law enforcement agencies. The group has demonstrated a diverse targeting approach, focusing primarily on victims in the Philippines, United States, United Kingdom, Mexico, and Dominican Republic, with particular emphasis on manufacturing, agriculture and food production, transportation/logistics, and telecommunication sectors, though the specific campaigns and ransom demands remain undisclosed in public threat intelligence reports. Given the group's recent emergence and limited public documentation, Payload appears to be currently active but remains a relatively obscure threat actor with insufficient publicly available data to establish comprehensive intelligence assessments from major cybersecurity organizations or law enforcement agencies. The group has been linked to 46 public disclosures across our corpus. First observed on a leak site on February 17, 2026; most recent post May 19, 2026. The operation is currently active.

Timeline of this disclosure

April 23, 2026Peroni Sosa Tellechea Burt & Narvaja listed by payloadon 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, Peroni Sosa Tellechea Burt & Narvaja is reported in UY.

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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Peroni Sosa Tellechea Burt & Narvaja

Claimed by payload · listed 27 days ago

27d

Age

since listed · data leaked

Status timeline

Listed
Apr 23, 2026
Data leaked

At a glance

Group: payload
Status: Data leaked
Country: UY
Sector: Business Services
Listed on leak site: Apr 23, 2026

About the victim

AI dossier — public-source company profile

Peroni Sosa Tellechea Burt & Narvaja (PSTBN) is described as one of the largest and most prestigious law firms in Paraguay, founded in 1968. The firm serves clients across multiple practice areas including corporate law, tax law, agribusiness, and regulatory compliance. Note: the country field lists Uruguay (UY), though the leak post identifies the firm as operating in Paraguay.

Industry: Legal Services
Founded: 1968

Attack summary

Severity: high — Data has been published (data_published status) from a major law firm, which almost certainly contains privileged attorney-client communications, sensitive corporate and financial records, and confidential client PII — constituting significant business and potentially regulated data exposure.

The group 'payload' claims to have compromised Peroni Sosa Tellechea Burt & Narvaja and has published data (disclosed status: data_published), though the leak post does not specify whether encryption occurred or detail the volume of exfiltrated data.

high

Data the group says was taken

AI dossier — extracted from the leak post

Legal client files
Corporate law documents
Tax records
Regulatory compliance documents
Agribusiness-related legal records

What the group claims

PSTBN Peroni Sosa Tellechea Burt & Narvaja is one of the largest and most prestigious law firms in Paraguay, founded in 1968. The firm is committed to meeting the diverse legal needs of its clients across various practice areas, including corporate law, tax law, agribusiness, and regulatory compliance.

The leak post

captured from the group's site

[ Inteceng.com.my (+ Tsksynergy.com.my + Amemanufacturing.com.my + Woodnova.com.my)  
```
These websites represent a synergistic group of Malaysian companies, such as AME Elite and TSK Synergy, specializing in integrated industrial construction and engineering solutions. They provide end-to-end services, including the design and fabrication of steel structures, mechanical engineering, and the development of large-scale industrial parks. Together, they leverage their combined expertise to deliver "turnkey" manufacturing facilities and infrastructure projects across the region.
```
](http://payloadrz5yw227brtbvdqpnlhq3rdcdekdnn3rgucbcdeawq2v6vuyd.onion/posts/61827d93-eb95-42af-b264-9b84aeecefb7) [ 
```
Gorey Community School is a co-educational, multi-denominational institution located in Gorey, Co. Wexford, under the joint patronage of the Loreto Sisters and Waterford and Wexford ETB
```
](http://payloadrz5yw227brtbvdqpnlhq3rdcdekdnn3rgucbcdeawq2v6vuyd.onion/posts/c9049f7c-de08-4099-a2f7-d8ae8e421682) [ PROM (Peakside Ros Outlet Management)  
```
PROM (Peakside Ros Outlet Management) is a joint venture established by the investment firm Peakside Capital and the operator Ros Retail t…

Screenshot of the leak post

Leak screenshot for Peroni Sosa Tellechea Burt & Narvaja

Sources

Leak posthttp://payloadrz5yw227brtbvdqpnlhq3rdcdekdnn3rgucbcdeawq2v6vuyd.onion/posts/291a9c54-96c1-49ab-bec6-c956261c75dd

Source

Indexed 27 days 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.