Trend Micro researchers have spotted a new ransomware group called Charon.
Researchers say the ransomware was spotted in targeted attacks against the Middle East's public sector and aviation industry.
It also exhibits advanced APT-style techniques.

New Ransomware Charon Uses Earth Baxia APT Techniques to Target Enterprises
We uncovered a campaign that makes use of Charon, a new ransomware family, and advanced APT-style techniques to target organizations with customized ransom demands.
Trend Micro (www.trendmicro.com)