Nefilim ransomware operators leaked data alleged stolen from the Dussmann group

Cyble researchers reported that Nefilim ransomware operators allegedly targeted the Dussmann group, the German largest private multi-service provider

Researchers from threat intelligence firm Cyble reported that Nefilim ransomware operators allegedly targeted the Dussmann group, the German largest private multi-service provider. The Dussmann Group has over 64,500 employees in 22 countries, it is one of the largest private multi-service providers worldwide.

In the past months, the number of ransomware attacks spiked, numerous ransomware operators made the headlines targeting organizations worldwide. One of these crews is behind the Nefilim ransomware that recently targeted the mobile network operator Orange.

During its continuous darkweb and deepweb monitoring, the Cyble Research Team came across the post of Nefilim ransomware operators in which the crew claimed to have breached The Dussmann Group and have exfiltrated sensitive data.

Below the message published by Nefilim ransomware operators to announce the data breach:

Cyble Research Team analyzed the leaked files included in a first batch of documents released by the group. The first archive of files allegedly stolen by the company is around 15.7 GB in size, the ransomware operators leaked a total of 16,805 company’s files.

“The data leak seems to consist of corporate operational documents which include the company’s claim settlement documents, compulsory security mortgages documents, legal contracts, Cooperation and Project agreements, and much more.” reads the post published by Cyble.

The ransomware gang is now threatening the company of releasing other stolen data if it will not pay the ransom.

Below a list of tips provided by Cyble to prevent ransomware attacks:

Never click on unverified/unidentified links
Do not open untrusted email attachments
Only download from sites you trust
Never use unfamiliar USBs
Use security software and keep it updated
Backup your data periodically
Isolate the infected system from the network
Use mail server content scanning and filtering
Never pay the ransom.

[adrotate banner=”9″]

[adrotate banner=”12″]

Pierluigi Paganini

(SecurityAffairs – hacking, Nefilim ransomware)

[adrotate banner=”5″]

[adrotate banner=”13″]

Pierluigi Paganini

Pierluigi Paganini is member of the ENISA (European Union Agency for Network and Information Security) Threat Landscape Stakeholder Group and Cyber G7 Group, he is also a Security Evangelist, Security Analyst and Freelance Writer. Editor-in-Chief at "Cyber Defense Magazine", Pierluigi is a cyber security expert with over 20 years experience in the field, he is Certified Ethical Hacker at EC Council in London. The passion for writing and a strong belief that security is founded on sharing and awareness led Pierluigi to find the security blog "Security Affairs" recently named a Top National Security Resource for US. Pierluigi is a member of the "The Hacker News" team and he is a writer for some major publications in the field such as Cyber War Zone, ICTTF, Infosec Island, Infosec Institute, The Hacker News Magazine and for many other Security magazines. Author of the Books "The Deep Dark Web" and “Digital Virtual Currency and Bitcoin”.