Emotet is a sophisticated Trojan horse predominantly targeting Microsoft Windows computers while featuring macOS compatibility as well. Originally operating as a banking Trojan, it aims to harvest victims’ sensitive information and send it to cybercriminals. Since 2014, when Emotet was discovered, it has been equipped with extra functionality allowing it to drop follow-up malware onto the infected machine. The secondary payloads include other info-stealers, ransomware, and adware, to name a few. This Trojan is polymorphic, which means it can additionally manifest itself as a worm in terms of self-distribution. Once it gains a foothold in a computer network, it can replicate itself to all the nodes in no time. This is a serious roadblock to cleaning up a compromised enterprise or government ecosystem consisting of numerous computers. The polymorphic gist of this pest also allows it to get around traditional signature-based detection. Trojan Emotet maintains communication with its C2 server to perform exfiltration of the collected sensitive data and receive commands of its operators. This interaction is also a means of cross-promoting affiliated threats after the initial incursion, the malicious server being a source of the opportunistic malware downloads. To recap, Emotet is one of the most evasive and harmful Trojans in circulation these days. It poses a serious risk to victims’ financial credentials and disseminates other viruses to ensure a maximum monetization of every infection instance.