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Summary
BlackCat (a.k.a. ALPHV and Noberus) is a Ransomware-as-a-Service (RaaS) group that emerged in November 2021, making headlines for being a sophisticated ransomware written in Rust. It has both Windows and Linux variants and the payload can be customized to adapt to the attacker’s needs. BlackCat is also believed to be the successor of the Darkside and BlackMatter ransomware groups. They work with a double-extortion scheme, where data is stolen, encrypted, and leaked if the ransom isn’t paid, which is a common methodology implemented by RaaS groups.
According to Microsoft, BlackCat was found targeting different countries and regions in Africa, the Americas, Asia, and Europe, having at least two known affiliates: DEV-0237 (previously associated with Ryuk, Conti, and Hive), and DEV-0504 (previously associated with Ryuk, REvil, BlackMatter, and Conti). However, due to the diversity of affiliates and targets, BlackCat may present different TTPs across the attacks. Recently, in September 2022, BlackCat claimed to have breached a contractor that provides s