The group first appeared online in August and claimed that it had access to the arsenal of a cyberespionage group known in the security industry as the Equation, widely believed to be a hacking division of the NSA.
Stolen network information from Russian, Chinese, Iranian, and North Korean nuclear missile programs.
In the post, which will worry security agencies and companies around the world, the Shadow Brokers said: "In June, TheShadowBrokers is announcing "TheShadowBrokers Data Dump of the Month" service".
It has not responded to repeated requests for comment about the ransomware attack. Each month peoples can be paying membership fee, then getting members only data dump each month.
According to the hackers, data that will be leaked monthly through the new subscription service could include exploits for web browsers, routers, mobile devices, and Windows 10, as well as data extracted by the Equation during its cyberespionage operations.
Even though the crooks behind the real WannaCry infection are still unknown, one thing is certain and this is the fact that Shadow Brokers stole the malware from the NSA.
The cyber security community has been combing through the blog post and other indicators for the Shadow Broker's intentions.
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It said it was set to sell access to previously undisclosed vulnerabilities, known as zero-days, that could be used to attack Microsoft Corp's latest software system, Windows 10.
The WannaCry attack stoked fears that the spy agency's powerful cyber weapons could now be turned to criminal use, ratcheting up cyber security threats to a new level.
"ShadowBrokers are back" tweeted Matthieu Suiche, a French hacker and founder of the United Arab Emirates-based cyber security firm Comae Technologies, who has studied the Shadow Broker releases and believes the group has access to NSA files.
Shadow broker the hacking group which was behind the last week's Wannacry Ransomware attacks in the world.
"Because simply by threatening another leak after leaking two sets of Microsoft exploits, Shadow Brokers will ratchet up the hostility between Microsoft and the government".
Spokesperson from Microsoft has already said that they will be preparing a response for this claim from the hacking group.
Shadow Brokers directly attacks Microsoft exec Brad Smith, whose name was on the company's statement, calling him a "scumbag" and questioning his company's links to the NSA.