Researchers from the Microsoft Security Intelligence team provided some details on a new massive phishing 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.
“For several months now, we’ve been seeing a steady increase in the use of malicious Excel 4.0 macros in malware campaigns. In April, these Excel 4.0 campaigns jumped on the bandwagon and started using COVID-19 themed lures.” states Microsoft in a Tweet.
