XinXin is a cybercrime group associated with the Lucid smishing kit. It is part of the broader Chinese-language smishing ecosystem that uses phishing kits delivered through SMS and iMessage lures to steal personal and payment information at scale. Reporting distinguishes XinXin from operators of the Lighthouse kit, noting tactical overlap between the ecosystems but assessing them as separate groups. The group is linked to financially motivated phishing activity centered on mobile-targeted social engineering, spoofed brand and service portals, and credential and payment-card harvesting. Its tradecraft aligns with large-scale smishing operations that rely on kit-based deployment, impersonation of trusted services, and collection of victim data for fraud and downstream monetization. Observed behaviors in the surrounding ecosystem include use of spoofing, credential theft, exfiltration of stolen data, and initial-access techniques via phishing messages. High-confidence reporting in the available material supports XinXin primarily as a smishing-enabled cybercrime actor rather than a state-directed intrusion set.
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Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Attributed origin per open-source reporting.
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Every observed MITRE ATT&CK technique, grouped by tactic.
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