A phishing kit built using pieces of code copied from other kits, some available for sale through publicly accessible scam sellers or are reused and repackaged by other kit resellers, provides rich insight into the state of the economy that drives phishing and email threats today. We uncovered this phishing kit while examining an extensive series of credential phishing campaigns that all sent credentials to a set of endpoints operated by the attackers.
We named the kit “TodayZoo” because of its curious use of these words in its credential harvesting component in earlier campaigns, likely a reference to phishing pages that spoofed a popular video conferencing application. Our prior research on phishing kits told us TodayZoo contained large pieces of code copied from widely circulated ones. The copied code segments even have the comment markers, dead links, and other holdovers from the previous kits.