Ransomware
Cl0p
Ransomware
15 detections found
Also known as: Clop, TA505, Lace Tempest, FIN11
Cl0p (Clop) is an extortion group linked to the TA505/FIN11 threat cluster, known since 2019 for mass-exploiting file-transfer and enterprise-software vulnerabilities (Accellion FTA, GoAnywhere MFT, and the 2023 MOVEit Transfer campaign) to steal data and extort victims at scale, often without deploying encryptors. The group resurfaced in 2025 exploiting an Oracle E-Business Suite zero-day (CVE-2025-61882) in a widespread extortion campaign disclosed by Mandiant/Google Cloud, naming dozens of victims, and remains highly active into 2026.
Detection & eradication references
Curated links to authoritative sources — MITRE ATT&CK, CISA advisories, law-enforcement takedown announcements, and vendor threat-intel writeups — for removal, remediation, and further technical detail. Sigma Watch does not publish its own removal steps here, since malware behavior and tooling change too fast for a static write-up to stay reliably accurate.
- #StopRansomware: CL0P Ransomware Gang Exploits CVE-2023-34362 MOVEit Vulnerability — CISA/FBI
- Clop, Software S0611 — MITRE ATT&CK
- Oracle E-Business Suite Zero-Day Exploited in Widespread Extortion Campaign — Google Cloud / Mandiant