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An investigation into domains associated with the LummaC2 infostealing-malware campaign revealed a broader network of nearly 500 domains with highly malicious risk scores. These domains share similar registration patterns, including the use of Eastern European names and the inbox[.]eu email domain. The domains predominantly advertise technical education courses, but are likely lures for malware delivery. Four domains were identified as LummaC2 login panels. The campaign's infrastructure uses specific TLDs, naming conventions, and a Hong Kong address linked to OFAC-sanctioned entities. Security teams are advised to monitor for similar domain patterns, scrutinize suspicious training sites, and educate users about the risks.

The LummaC2 campaign represents a sophisticated infostealing malware operation that leverages an extensive and covert domain infrastructure to facilitate malware delivery and command-and-control (C2) activities. Investigations have uncovered nearly 500 domains linked to this campaign, characterized by highly malicious risk scores and consistent registration patterns. These domains predominantly use Eastern European personal names and the inbox[.]eu email domain for registration, suggesting a coordinated effort to mask the true operators. The domains primarily masquerade as providers of technical education courses, a tactic designed to lure victims into engaging with malicious content under the guise of legitimate training resources. Among these, four domains have been identified as actual LummaC2 login panels, serving as interfaces for threat actors to manage infected systems or distribute malware payloads. The infrastructure employs specific top-level domains (TLDs) and naming conventions, and intriguingly, includes a Hong Kong address linked to entities sanctioned by the Office of Foreign Assets Control (OFAC), indicating potential geopolitical or regulatory evasion strategies. The campaign aligns with several MITRE ATT&CK techniques, including spearphishing via service (T1566.002), establishing and using infrastructure (T1583.001), domain generation algorithms or domain fronting (T1589.002), and leveraging compromised or malicious domains (T1585, T1584.001). Although no known exploits are currently active in the wild, the campaign’s infrastructure and tactics pose a significant risk for credential theft, data exfiltration, and further malware dissemination. Security teams are advised to monitor for domain registration patterns similar to those identified, scrutinize suspicious technical education websites, and implement user awareness programs to mitigate the risk of social engineering attacks associated with this campaign.

Detailed information about Part 2: Tracking LummaC2 Infrastructure. Get real-time updates, technical details, and mitigation strategies.

Part 2: Tracking LummaC2 Infrastructure - Live Threat Intelligence - Threat Radar | OffSeq.com

Part 2: Tracking LummaC2 Infrastructure

A campaign targeting the Google Chrome Web Store has deployed over 100 malicious browser extensions masquerading as legitimate tools like VPNs, AI assistants, and crypto utilities. These extensions, while offering some promised functionality, secretly connect to threat actor infrastructure to steal user information and execute remote scripts. They can modify network traffic, deliver ads, perform redirections, and act as proxies. The campaign, discovered by DomainTools researchers, involves numerous fake domains promoting these tools. The extensions request permissions that enable cookie theft, DOM-based phishing, and dynamic script injection. Risks include account hijacking, data theft, and browsing activity monitoring. Some extensions remain on the Chrome Web Store despite Google's removal efforts.

This threat involves a large-scale campaign targeting the Google Chrome Web Store, where over 100 malicious browser extensions have been identified masquerading as legitimate tools such as VPN services, AI assistants, crypto utilities, and even well-known brands like Fortinet and YouTube. These extensions are designed to deceive users by offering some promised functionality to appear legitimate, while covertly performing malicious activities. Once installed, the extensions request extensive permissions that allow them to intercept and modify network traffic, steal cookies, inject dynamic scripts, and perform DOM-based phishing attacks. This enables the threat actors to harvest sensitive user information, including authentication tokens, browsing activity, and potentially credentials, which can lead to account hijacking and further compromise. The extensions also have capabilities to deliver unwanted advertisements, redirect users to malicious or phishing sites, and act as proxies to obfuscate attacker infrastructure. Despite Google's ongoing efforts to detect and remove these extensions, some remain active on the Chrome Web Store, facilitated by the use of numerous fake domains promoting these tools to lure victims. The campaign leverages multiple attack techniques including remote script execution (T1059.007), user execution (T1204.002), command and control over web protocols (T1071), and credential access via input capture and cookie theft (T1056, T1189). The threat is notable for its scale, persistence, and the exploitation of trusted platforms and brands to increase user trust and installation rates.

Detailed information about Data-stealing Chrome extensions impersonate Fortinet, YouTube, VPNs. Get real-time updates, technical details, and mitigation strateg

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