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CoGUI is a phishing kit associated with Chinese-speaking threat actors and used in phishing-as-a-service style operations. It is notable for advanced anti-analysis and evasion features designed to reduce automated detection and hinder security research. Reported defensive bypass measures include geofencing, header-based filtering, and device fingerprinting to selectively present phishing content only to intended victims while excluding scanners and analysis systems. CoGUI has been used to impersonate major consumer and e-commerce brands including Amazon, PayPal, Rakuten, and Apple in credential-harvesting campaigns. Available reporting indicates that, unlike some adversary-in-the-middle phishing kits, CoGUI is not known for capturing multi-factor authentication credentials. Its observed tradecraft is most consistent with financially motivated phishing activity focused on credential theft and defense evasion rather than espionage or destructive operations.
Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
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