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The GreedyBear attack group has launched a massive crypto theft operation, utilizing 150 weaponized Firefox extensions, nearly 500 malicious executables, and numerous phishing websites. Their tactics include Extension Hollowing to bypass marketplace security, distributing various malware families, and creating scam sites masquerading as crypto products. The campaign's infrastructure is consolidated to a single IP address, suggesting a centralized backend. The group has expanded from its earlier Foxy Wallet campaign and shows signs of potential growth beyond Firefox. The attackers are leveraging AI to scale their operations, making it challenging for traditional security measures to keep up. The campaign has reportedly stolen over $1 million from victims.

The GreedyBear attack group has orchestrated a large-scale, multifaceted crypto theft campaign leveraging a diverse arsenal of over 650 attack tools, including 150 weaponized Firefox browser extensions, nearly 500 malicious executables, and numerous phishing websites. Their primary tactic, Extension Hollowing, allows them to bypass Firefox marketplace security by injecting malicious code into legitimate extensions, thereby evading detection and facilitating widespread distribution. The campaign infrastructure is notably centralized, with all malicious activities routed through a single IP address, indicating a streamlined backend command and control setup. GreedyBear's operations have evolved from their earlier Foxy Wallet campaign, expanding their scope and potentially targeting platforms beyond Firefox in the near future. The attackers employ artificial intelligence techniques to automate and scale their operations, complicating detection and mitigation efforts by traditional security tools. The campaign encompasses multiple malware families, including Luca Stealer and Lummastealer, and employs tactics such as phishing, scam websites impersonating crypto products, and ransomware deployment. The campaign has reportedly resulted in financial losses exceeding $1 million. The attack techniques correspond to MITRE ATT&CK tactics such as T1583 (Acquire Infrastructure), T1176 (Browser Extensions), T1102 (Web Service), T1608 (Stage Capabilities), T1204 (User Execution), T1056 (Input Capture), T1132 (Data Encoding), T1585 (Establish Accounts), T1588 (Obtain Capabilities), and T1189 (Drive-by Compromise). This coordinated campaign represents a sophisticated threat targeting cryptocurrency users through multiple vectors, leveraging social engineering, technical exploitation, and AI-driven scaling.

Detailed information about 650 Attack Tools, One Coordinated Campaign. Get real-time updates, technical details, and mitigation strategies.

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Threats Tagged 'extension hollowing'

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