ESET researchers have published an in-depth analysis of the activity of the Evilnum cybercriminal group, the APT (advanced persistent threat) group behind the malware Evilnum.
According to ESET telemetry data, the Evilnum team has focused its attacks on financial technology companies. Most targets are in the European Union and the United Kingdom, however, ESET has identified other attacks in Australia and Canada. 
The Evilnum Group closely monitors its candidate targets to gather financial information about the company and its customers.
"While the Evilnum malware has been spotted 'in the wild' since at least 2018, the information that has been published about the team behind the malware and how it works is minimal," said Matias Porolli, the ESET researcher who leads the research for the Evilnum group. “The toolkit and infrastructure it uses has evolved and now consists of a combination of homegrown malware and tools purchased from Golden Chickens, τον πάροχο Malware-as-a-Service (MaaS) στους κακόβουλους πελάτες του οποίου συγκαταλέγονται οι ομάδες FIN6 και Cobalt Group» συμπληρώνει.
Evilnum steals sensitive information, credit card and address information and details ID cards, spreadsheets and documents with customer lists, investment and trading records, software licenses and credentials for trading software and platforms, email information, and other data. The team also gained access to information related to IT infrastructure, such as VPN configurations.
"The team approaches its targets with phishing emails that contain a link to a .zip file hosted on Google Drive. This file contains many shortcut files that extract and execute a malicious item while displaying a bait document, ”explains Porolli.
These documents appear to be authentic, and are constantly being collected during the group's malicious operations as they try to reach new victims. The Evilnum team targets technical support agents and account managers, who regularly receive ID and credit card documents from their customers.
As with many malware, commands can be sent to the Evilnum malware. Among other things there are orders for the collection and sending passwords stored in Google Chrome, collecting and sending Google Chrome cookies, taking screenshots, stopping malware and removing.
“Evilnum is based on mode of important infrastructures, which include several different servers for different forms of communication" concludes Porolli.
For more technical details about Evilnum malware and the APT team, visit related blogpost in WeLiveSecurity.
