RedCurl Shifts from Espionage to Ransomware with First-Ever QWCrypt Deployment
Mar 26, 2025
Ransomware / Endpoint Security
The Russian-speaking hacking group called RedCurl has been linked to a ransomware campaign for the first time, marking a departure in the threat actor's tradecraft. The activity, observed by Romanian cybersecurity company Bitdefender, involves the deployment of a never-before-seen ransomware strain dubbed QWCrypt. RedCurl , also called Earth Kapre and Red Wolf, has a history of orchestrating corporate espionage attacks aimed at various entities in Canada, Germany, Norway, Russia, Slovenia, Ukraine, the United Kingdom, and the United States. It's known to be active since at least November 2018. Attack chains documented by Group-IB in 2020 entailed the use of spear-phishing emails bearing Human Resources (HR)-themed lures to activate the malware deployment process. Earlier this January, Huntress detailed attacks mounted by the threat actor targeting several organizations in Canada to deploy a loader dubbed RedLoader with "simple backdoor capabilities." Then l...