Cybersecurity News

North Korea-linked Actors Exploit React2Shell to Deploy New EtherRAT Malware

Tue, 09 Dec 2025 23:55:00 +0530
The Hacker News

Threat actors with ties to North Korea have likely become the latest to exploit the recently disclosed critical React2Shell security flaw in React Server Components (RSC) to deliver a previously undocumented remote access trojan dubbed EtherRAT. "EtherRAT leverages Ethereum smart contracts for command-and-control (C2) resolution, deploys five independent Linux persistence mechanisms, and

Four Threat Clusters Using CastleLoader as GrayBravo Expands Its Malware Service Infrastructure

Tue, 09 Dec 2025 21:31:00 +0530
The Hacker News

Four distinct threat activity clusters have been observed leveraging a malware loader known as CastleLoader, strengthening the previous assessment that the tool is offered to other threat actors under a malware-as-a-service (MaaS) model. The threat actor behind CastleLoader has been assigned the name GrayBravo by Recorded Future's Insikt Group, which was previously tracking it as TAG-150. The