Cl0p ^_- Til You Drop - 6 years, 9 Campaigns, 7 0-Days

Cl0p has executed at least nine major exploitation campaigns since 2020, targeting file transfer and edge devices from Accellion to MOVEit to Centrestack. Each campaign looks different on the surface, different CVEs, different victims, different tooling. But their infrastructure tells a different story.

This talk presents the results of a multi-year infrastructure reconnaissance effort tracking Cl0p's hosting, ASN usage, and operational patterns across all known campaigns. By mining passive DNS data, network telemetry, and hosting records, I mapped the infrastructure behind each campaign and identified patterns the group can't seem to shake — including a favorite bulletproof hosting provider used across four separate campaigns, a finding that roughly one-third of their ASNs get recycled, and pre-attack reconnaissance probing observed as far as two years before exploitation.