FortiGuard Labs discovered an e-mail that included a tax form seemingly from the United States Internal Revenue Service (IRS) in early November that had been sent by the recently resurgent Emotet group. Emotet (aka, Geodo and Heodo) began life as a banking Trojan but has since morphed into a jack-of-all-trades tool that can exploit several vulnerabilities to compromise its victims. Once it has infected a system, it then typically delivers additional payloads. And because it’s modular, it is easily customizable by its users. This flexibility and resiliency are part of why Emotet has managed to survive at least one coordinated industry/law enforcement takedown in 2021.