New Agent Tesla Malware Variant Using ZPAQ Compression in Email Attacks

A new version of the Agent Tesla malware is being delivered through the ZPAQ file compression format, targeting multiple email clients and web browsers. The malware, initially identified in 2014, is often used to provide remote access to a compromised system for downloading other, more complex tools, such as ransomware. This recent development highlights possible experimenting with unusual file formats for malware delivery.