Cicada3301 Ransomware Claims Attack on French Peugeot Dealership

Category	Details
Threat Actors	Cicada3301 (Ransomware group operating under Ransomware-as-a-Service model)
Campaign Overview	Breach of Concession Peugeot; theft of 35GB of sensitive data including invoices, passports, and communications
Target Regions/Victims	French automotive dealership associated with Peugeot
Methodology	– Ransomware attack targeting dealership’s systems – Use of RaaS model by affiliates
Product Targeted	Concession Peugeot systems (Windows and Linux/ESXi platforms)
Malware Reference	Cicada3301 ransomware
Tools Used	Written in Rust, leveraging ChaCha20 encryption, cross-platform ransomware
Vulnerabilities Exploited	Weak security protocols in targeted dealership systems
TTPs	– Cross-platform targeting (Windows and Linux/ESXi) – File encryption using ChaCha20 – Data exfiltration and public leaks
Attribution	Cicada3301 ransomware group with similarities to ALPHV/BlackCat
Recommendations	– Strengthen dealership and brand-wide cybersecurity measures – Monitor subdomain security – Regular system patching and cross-platform security audits – Establish incident response plans for high-value data breaches
Source	Hackread

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