A new breed of ransomware has surfaced according to an article at Arstechnica. Security companies PandaLabs and Kaspersky Lab has identified trojans Sinowal.FY and Gpcode.ai.

These viruses place a readme file where a user can find it if his or her machine become affected.

The file contains a threat that the attackers has encrypted the user’s files and that they are asking for $300. The deadline in the note is July 15.

According to PandaLabs, these are empty threats. A Kaspersky Lab analyst said it has a shelf life between the dates of July 10 and July 15.

An example of how the readme.txt looks like is available at the link below.

Source: Arstechnica