A Ukrainian cybercrime unit identified two people who handled technical tasks for a ransomware network, focusing on breaking into secured systems. These individuals worked by uncovering encrypted passwords through dedicated tools. Their job was to unlock access codes so others could move deeper. With those login details, associates entered company servers without permission. They installed malicious encryption programs afterward. Victims then faced demands for money before files would be released.
Finding hidden data drives inside apartments across Ivano-Frankivsk and Lviv opened a path toward tracking illegal transactions. Though police stayed silent on custody details, they emphasized digital trails now feed directly into active probes.
Emerging in April 2022, Black Basta quickly rose as a leading ransomware force worldwide. Over 500 businesses in North America, Europe, and Australia faced its attacks, bringing in hundreds of millions through crypto ransoms. Instead of acting alone, the group used a service-based approach, pulling in partners who received profit cuts for launching assaults on their behalf.
Early in 2025, internal chat records from Black Basta were made public, showing how the group operated and naming those involved. Nefedov emerged as the central figure behind the network; his known aliases included Tramp, Trump, GG, and AA. Evidence within the files suggested ties between him and high-level individuals in Russian politics. Links to state security bodies like the FSB and GRU appeared in some messages.
Such affiliations might explain why legal action against him never moved forward. The disclosure offered rare insight into an otherwise hidden criminal ecosystem.
A report from June 2024 noted a short detention of Nefedov in Yerevan, Armenia; authorities let him go afterward. Although listed internationally as a fugitive, where he is now has not been confirmed - evidence suggests Russia may be harboring him.
Some researchers connect Nefedov to Conti, a well-known ransomware outfit that ended in 2022. When Conti broke apart, new groups appeared - Black Basta, BlackByte, and KaraKurt among them. Following the split, ex-Conti members moved into different ransomware efforts, though certain ones eventually stopped operating.
A different analysis by Analyst1 showed Black Basta made frequent use of Media Land - an internet host blacklisted by U.S., British, and Australian governments in late 2025 due to its resistance to takedown requests.
According to officials in Germany, Nefedov was responsible for choosing victims, bringing in new people, handling payment talks after attacks, then splitting the money taken with others involved.
After the leaks, activity from Black Basta's systems stopped. Its public leak page vanished by February.
Still, security analysts note such criminal networks frequently reappear under different names or combine forces elsewhere. Data collected by ReliaQuest together with Trend Micro points toward ex-members possibly joining CACTUS. A sharp increase in victims claimed by CACTUS emerged right when Black Basta faded.
