A new targeted attack has infected several organizations in Taiwan with a new ransomware family, which we have dubbed ColdLock. This attack is potentially destructive as the ransomware appears to target databases and email servers for encryption.
The information we gathered indicates that this attack started hitting organizations in early May. Analysis of the malware points to similarities between ColdLock and two previously known ransomware families, specifically Lockergoga, Freezing, and the EDA2 “educational” ransomware kit. There have been no indications that this attack has hit any other organization outside of those targeted; we do not believe that this family is currently in widespread use.
Source: Trend Micro