Cyber Threat Intelligence
CTI Academy Sponsor CTI Academy
ME
Ransomware Victim Manufacturing

Mefa Group www.mefagroup.com.tr / MEFA Endüstri www.mefaendustri.com / and (Efachem, Eco...

Ransomware attack by Blacknevas · Disclosed September 8, 2026 · 🇹🇷 Turkey

mefagroup.com.tr

Date Disclosed
Sep 8, 2026
2026
Threat Group
Blacknevas
47 total victims
Country
🇹🇷 Turkey
Industry
Manufacturing

ThreatAI Analysis

Compiled from this incident record and the threat intelligence profile for Blacknevas. Figures and technique mappings are quoted from the source data, not inferred.

About Mefa Group www.mefagroup.com.tr / MEFA Endüstri www.mefaendustri.com / and (Efachem, Eco...

of files. For details and cooperation, write to Telegram https://t.me/BlackNevas or email [email protected] Group is a Turkish industrial group (headquartered in Ankara), founded in 2006. It operates in industrial manufacturing, plastics, rubber, processing, and logistics. The group has over 115,000 m² of production space, over 2,000 employees, and several facilities in Turkey, Romania, and Poland. Its main areas of focus are the automotive industry, white goods, and related industries.MILKRUN — Milkrun Lojistik, the group's logistics division. It provides integrated and smart logistics solutions for group companies and partners (focusing on efficiency, digitalization, and sustainability). It is not the Australian grocery delivery service of a similar name.Efachem, a division specializing in plastic and rubber compounds (compound solutions), develops customized formulas to meet customer needs, ensuring compatibility with production processes and consistent quality.Ecopolymer, a division specializing in raw materials processing and technology, utilizes cutting-edge recycling technologies, converting plastic waste into high-performance raw materials within the framework of a circular economy.All these companies operate as a single ecosystem: production (MEFA Endüstri), raw materials/compounds (Efachem), processing (Ecopolymer), and logistics (Milkrun).

Source record: ransomware.live

About the Blacknevas group

BlackNevas is a ransomware group first observed in November 2024, believed to be derived from the Trigona ransomware family, targeting telecommunications, manufacturing, medical, and legal industries primarily in Asia-Pacific, the UK, Italy, and Lithuania using double-extortion with a dual AES/RSA encryption scheme. Blacknevas has listed 46 victims since April 2023.

Incident Analysis

Mefa Group www.mefagroup.com.tr / MEFA Endüstri www.mefaendustri.com / and (Efachem, Eco... was targeted by Blacknevas ransomware, one of the most active ransomware groups in our database with 47 confirmed victims globally. The attack was disclosed on September 8, 2026, when Mefa Group www.mefagroup.com.tr / MEFA Endüstri www.mefaendustri.com / and (Efachem, Eco... appeared on the group's dark web leak site.

Mefa Group www.mefagroup.com.tr / MEFA Endüstri www.mefaendustri.com / and (Efachem, Eco... is based in Turkey , operating in the Manufacturing sector. Turkey ranks #19 globally for ransomware attacks, with 155 victims in our database.

Sector context: Manufacturing companies are frequently targeted because production downtime directly translates to financial loss. Ransomware operators exploit this time-sensitivity to demand higher ransoms and faster payment.

Blacknevas typically employs a double extortion model: first exfiltrating sensitive data from the victim's systems, then deploying ransomware to encrypt files. Victims face two simultaneous threats — paying to restore access and paying to prevent publication of stolen data. The group's leak site publishes victim names and exfiltrated data as leverage.

Data source: This incident record is sourced from public ransomware group leak site disclosures aggregated via the ransomware.live API. Disclosure date reflects when the victim was published on the leak site, which may differ from the initial date of compromise. This platform does not publish or link to stolen data. Last data update: Sep 20, 2026 22:00 UTC.

Frequently Asked Questions

Was Mefa Group www.mefagroup.com.tr / MEFA Endüstri www.mefaendustri.com / and (Efachem, Eco... attacked by ransomware?

Yes. Mefa Group www.mefagroup.com.tr / MEFA Endüstri www.mefaendustri.com / and (Efachem, Eco... was listed as a victim of the Blacknevas ransomware group on September 8, 2026. The organisation is based in Turkey and operates in the Manufacturing sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Mefa Group www.mefagroup.com.tr / MEFA Endüstri www.mefaendustri.com / and (Efachem, Eco...?

Mefa Group www.mefagroup.com.tr / MEFA Endüstri www.mefaendustri.com / and (Efachem, Eco... was attacked by Blacknevas ransomware. Blacknevas is one of the most active ransomware groups, having claimed 47 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Mefa Group www.mefagroup.com.tr / MEFA Endüstri www.mefaendustri.com / and (Efachem, Eco... ransomware attack occur?

The ransomware attack on Mefa Group www.mefagroup.com.tr / MEFA Endüstri www.mefaendustri.com / and (Efachem, Eco... was disclosed on September 8, 2026. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the Mefa Group www.mefagroup.com.tr / MEFA Endüstri www.mefaendustri.com / and (Efachem, Eco... ransomware attack?

The specific data stolen from Mefa Group www.mefagroup.com.tr / MEFA Endüstri www.mefaendustri.com / and (Efachem, Eco... has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Manufacturing organisation, Mefa Group www.mefagroup.com.tr / MEFA Endüstri www.mefaendustri.com / and (Efachem, Eco... likely held sensitive business data, client information, and operational records.

How can organisations protect against Blacknevas attacks?

To defend against Blacknevas and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.