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PupkinStealer is a .NET-based information stealer. The provided content references it in malware reporting and newsletters published by Security Affairs on May 18, 2025, including an item titled "PupkinStealer: A .NET-Based Info-Stealer." Beyond identifying it as an infostealer implemented in .NET, the available content does not provide further high-confidence details on its capabilities, infection vectors, associated threat actors, targeted systems or industries, or indicators of compromise.
Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A .NET-based information stealer (infostealer).
A .NET-based information stealer referenced as PupkinStealer.
Match every observed IP, domain, and hash against your live telemetry.
Named campaigns wielding this family, with evidence pinned to each claim.
CVEs this family uses for access and lateral movement.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Every documented technique, ranked by evidence weight.
Reddit, Mastodon, and CTI community discussion around this family.