Zyka targets Windows OS and its method of distribution is currently unknown. Zyka encrypts files using AES and appends .lock to their names. The ransom payment demand is 170 USD or 170 EUR worth of Bitcoin.

  • Enigma Software provides more information about Zyka here.
  • Security researcher Michael Gillespie provides a free decryption tool for Zyka here.

One example of the Zyka variant. Image Source: Enigma Software