A new malware campaign was responsible for sending 23 million emails containing Locky ransomware in just 24 hours earlier this week.
ZDNet reports the frequency of attacks spiked just as employees arrived to work Monday morning.
The malware payload is embedded in a ZIP file that contains a Visual Basic Script (VBS) file, which when clicked will download the latest ransomware variant (Lukitus).
According to the security researchers at AppRiver who discovered the campaign, the attack was “one of the largest malware campaigns seen in the latter half of 2017”.
Check out our related article on PyLocky ransomware, a family of ransomware written in Python that masquerades as a Locky ransomware variant.