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Things we have learned about Petna, the Petya-based malware

Earlier this week, we saw another mass ransomware attack happen, less than two months after the WannaCry outbreak. In the hours and days after the attack, this strain was given many different names, including Petya, Petna, NotPetya, EternalPetya, Nyetya, and many more. We originally referred to it as Petya-based, but for simplicity, let’s call it Petna.

Petya-based ransomware using EternalBlue to infect computers around the world

Further to reports of a massive cyber attack hitting a number of companies in Ukraine, including banks, energy companies and transport services as well as the government, we believe this is another example of the Petya-based ransomware, which was first…

WannaCry WannaBe targeting Android smartphones

Avast is now detecting mobile ransomware, which we will refer to as “WannaLocker” from now on. The ransomware is targeting Chinese Android users. WannaLocker’s ransom message screen may look familiar to you and that’s because it looks just like the WannaCry ransomware screen, the ransomware that spread like wildfire around the world mid-May. Another interesting aspect is that WannaLocker encrypts files on the infected device’s external storage, something we haven’t seen since Simplocker in 2014.WannaLocker ransom message.jpg