PoisonSeed
PoisonSeed is a threat actor employing an MFA-resistant phishing kit to acquire credentials from individuals and organizations, primarily targeting email infrastructure for cryptocurrency-related spam. They utilize spear-phishing emails with malicious links, automate bulk downloading of email lists, and capture authentication cookies to bypass MFA. PoisonSeed has been linked to campaigns that exploit cross-device sign-in features and employ tactics such as cryptocurrency seed phrase poisoning. Their infrastructure includes domains registered through NICENIC and hosted on Cloudflare, with a focus on phishing CRM and bulk email provider credentials.
CVEs in recent coverage
No CVEs named alongside this actor in the last 90 days.
Recent victims
No leak-site posts on record for this group.
Recent activity
No posts or advisories have named this actor recently.
References
- https://blog.nviso.eu/2025/08/12/shedding-light-on-poisonseeds-phishing-kit/
- https://www.silentpush.com/blog/poisonseed/
From the MISP threat-actor galaxy, MITRE ATT&CK and RansomLook (CC BY 4.0). Activity is any post or advisory Watch Floor collected that names the actor or one of its aliases.