Disclosure context

About lamashtu

Based on the limited available information, Lamashtu is an emerging ransomware group that was first observed in April 2026, appearing to be financially motivated based on their operational patterns. The group's origin and potential affiliations remain unclear due to their recent emergence and limited public documentation by major threat intelligence organizations. Lamashtu's attack methodology and specific technical capabilities have not been extensively documented by established security researchers, though their targeting patterns suggest they employ standard ransomware deployment techniques across multiple industry verticals. The group has conducted at least 8 confirmed attacks, demonstrating a geographically diverse targeting approach with victims identified in France, Italy, the United States, Singapore, and Malaysia, while focusing primarily on business services, manufacturing, transportation and logistics, hospitality and tourism, and energy sectors. Given the group's recent first observation in April 2026 and limited public threat intelligence reporting from established sources like CISA, FBI, or major security firms, Lamashtu appears to represent a newly active threat actor whose current operational status and long-term capabilities require further monitoring and analysis. The group has been linked to 30 public disclosures across our corpus. First observed on a leak site on April 13, 2026; most recent post May 19, 2026. The operation is currently active.

Timeline of this disclosure

May 6, 2026WOHA listed by lamashtuon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Hospitality and Tourism sector, which has 159 disclosures indexed across all operators we track. Geographically, WOHA is reported in SG, a country with 33 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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WOHA

Claimed by lamashtu · listed 15 days ago

14d

Age

since listed · data leaked

Status timeline

Listed
May 6, 2026
Data leaked

At a glance

Group: lamashtu
Status: Data leaked
Country: SG
Sector: Hospitality and Tourism
Listed on leak site: May 6, 2026

About the victim

AI dossier — public-source company profile

WOHA is a Singapore-based architectural practice founded in 1994 by Wong Mun Summ and Richard Hassell, headquartered at 29 HongKong Street, Singapore. The firm specialises in integrating environmental and social principles into high-density urban architecture and urban design solutions. It is globally recognised for projects such as Parkroyal Collection Pickering and Kampung Admiralty in Singapore.

Industry: Architecture & Urban Design
Address: 29 HongKong Street, Singapore 059668
Founded: 1994

Attack summary

Severity: medium — Data is marked as published, indicating confirmed exfiltration or release, but no details on the nature, volume, or sensitivity of the data (e.g. PII, financial records) are provided, and no ransom or data size is stated, precluding a higher severity rating.

The ransomware group Lamashtu claims to have compromised WOHA, with the disclosure status recorded as data_published, indicating data has been released or made available. No specific details on encryption or the volume of exfiltrated data were provided in the leak post.

medium

What the group claims

WOHA is a renowned Singapore-based architectural practice founded in 1994 by Wong Mun Summ and Richard Hassell. The firm is globally recognized for its integration of environmental and social principles into high-density urban settings.

Sources

Victim sitewoha.net
Leak posthttp://lamashtux5j74mcm7lwwgn5yrvuwtrpxjoyendif3v3hrztjesfoyayd.onion/post/655b56243673565bcb706f4369c603da

Source

Indexed 15 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.