One specific aspect of malware and one vulnerability continues to develop as security companies have been reconstructing the highest trends in the past weeks that is - WannaCry and EternalBlue. WannaCry spreads quickly since Windows Server Message Block Version 1, also known as EternalBlue, had a vulnerability to a broad flaw. Microsoft had already fixed the vulnerability, CVE-2017-0143 - effectively, shortly before WannaCry was released - with its system update MS17-010.
For example, the security agency Trend Micro claims that WannaCry, trailed by cryptocurrency miners, and Emotet has been the most popular form of malware family found last year. Whereas Emotet was newly disrupted by police departments.
“The one thing that really keeps WannaCry prevalent and active is the fact that it is wormable ransomware,” says Rik Ferguson, vice president of security research at Trend Micro. "Couple that with the fact that Shodan showed me just now that there remain 9,131 internet-facing machines vulnerable to MS17-010 and you quickly begin to understand why it continues to propagate."
The National Security Agency, which apparently developed the exploit for the SMB v1 flaw, seems to have started the EternalBlue. This exploit was then leaked or robbed by the Shadow Brokers Party in 2017 and eventually obtained and leaked. Two months later, EternalBlue-targeting was released, with many analysts claiming it was created by North Korean hackers, who then might have lost all control of the WannaCry.
Although WannaCry seems to be the malware frequently detected, it does not imply that it is the most harmful or even most of the devices contain it. Not all such codes are published and even if they are, they don't guarantee succes ..
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