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Sanko Fastem (Vietnam) Co., Ltd.

listed as www.sankovn.com · Claimed by Krybit · listed 2 hours ago

Today
Age
since listed · data leaked

Status timeline

  1. ListedAug 26, 2026
  2. Data leakeddate unknown

At a glance

Group
Krybit
Status
Data leaked
Country
Vietnam
Listed on leak site
Aug 26, 2026

About the victim

AI dossier — public-source company profile

Sanko Fastem (Vietnam) Co., Ltd. is a Vietnamese subsidiary of Sanko Fastem (Thailand), part of the Sanko Techno Group (Japan). Established to distribute high-quality Japanese anchor bolt systems, concrete drill bits, chemical anchors, and construction fastening products certified by JCAA. The company supplies M&E installation materials to high-rise buildings, factories, and construction projects across Vietnam.

Industry
Construction Fastening & Anchor Systems Manufacturing
Address
Room No. 29, 8th Floor, Detech II Tower, No. 107 Nguyen Phong Sac Street, Cau Giay Ward, Hanoi, Vietnam

Attack summary

Severity: low — The disclosure is an announcement/listing only with no proof files, screenshots, or technical details provided. No data inventory is described, no operational disruption is claimed, and the nature of the attack (encryption vs. exfiltration) is unstated. This appears to be a claim without substantiation.

The krybit group claims to have conducted an attack on Sanko Fastem (Vietnam). The leak post does not specify whether data was encrypted, exfiltrated, or both, nor does it detail what data is at stake.

low

What the group claims

Sanko Fastem (Vietnam) Co., Ltd. is a Vietnamese subsidiary of Sanko Fastem (Thailand) under the Sanko Techno Group (Jap...

The leak post

captured from the group's site
Sanko Fastem (Vietnam) Co., Ltd. is a Vietnamese subsidiary of Sanko Fastem (Thailand) under the Sanko Techno Group (Japan), a leading Japanese manufacturer with over 50 years of experience, established in Vietnam to distribute high-quality Japanese anchor bolt systems and construction fastening products. The company specializes in supplying expansion anchor bolts (bu lông nở), concrete drill bits (mũi khoan bê tông), chemical anchors (hóa chất cấy thép), threaded rod connectors, hangers, and other auxiliary sub-materials for M&E (Mechanical & Electrical) installation works in high-rise buildings, factories, and construction projects across Vietnam. All products are certified by JCAA (Japan Construction Anchor Association), ensuring Japanese quality standards. The company also provides technical training programs conducted by JCAA-certified experts from Sanko Techno Group Japan.
Office: Room No. 29, 8th Floor, Detech II Tower, No. 107 Nguyen Phong Sac Street, Cau Giay Ward, Hanoi, Vietnam
TEL: +84 (0) 972 426 832
TEL (alt): +84 (024) 39590262
Parent Company: Sanko Techno Group (Japan) via Sanko Fastem (Thailand)
Certifications: JCAA (Japan Construction Anchor Association)
Employees…

Sources

Source

Indexed 2 hours 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.

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Disclosure context

About krybit

Krybit is an emerging ransomware group that was first observed in April 2026, operating with apparent financial motivations based on their limited documented attacks against diverse sectors. The group's origin and affiliations remain unclear due to limited public intelligence, and it is unknown whether they operate as a Ransomware-as-a-Service model or as an independent entity. With only four known victims documented across geographically diverse regions including Mexico, Austria, Japan, and Botswana, the group appears to employ broad targeting rather than focused regional or sector-specific campaigns, though their attack methodology, encryption techniques, and data exfiltration practices have not been publicly documented by major security firms or law enforcement agencies. No notable high-profile campaigns or significant ransoms have been publicly reported, and no law enforcement actions against the group have been documented. Given the recent emergence of this group and extremely limited public reporting, Krybit's current operational status and capabilities remain largely unknown to the broader cybersecurity community. The group has been linked to 119 public disclosures across our corpus. First observed on a leak site on April 3, 2026; most recent post August 26, 2026. The operation is currently active.

Timeline of this disclosure

  • August 26, 2026www.sankovn.com listed by krybiton the group's public leak site

Other recent disclosures by krybit

krybit has been linked to 119 public victims on Darkfield. A sample of the most recent:

See the full krybit dossier →

Sector and geography

Geographically, www.sankovn.com is reported in Vietnam, a country with 16 ransomware disclosures in our corpus.

If your organisation is affected

A listing by krybit means www.sankovn.com appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

  • Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
  • Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
  • Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
  • Monitor for the data appearing on krybit's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

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.