Experts from the Microsoft Security Intelligence team provided some details on a new massive campaign using COVID-19 themed emails. The messages used weaponized Excel documents, the IT giant observed a spike in the number of malicious documents in malspam campaigns which use Excel 4.0 macros. Once opened the attachment, it will show a graph of Coronavirus cases in the United States and trick the victims into enabling the macros to start the infection. The macros drop a remote access tool (RAT) named NetSupport Manager, it is a legitimate application that is abused by attackers to take control over victim systems.”]
Source: https://securityaffairs.co/wordpress/103626/cyber-crime/massive-phishing-covid-19-campaign.html