Following the detection of the WannaCry attack on Friday, "researchers at Proofpoint discovered a new attack linked to WannaCry called Adylkuzz," said Nicolas Godier, a researcher at the computer security firm.
"It uses the hacking tools recently disclosed by the NSA and which have since been fixed by Microsoft in a more stealthy manner and for a different purpose," he said.
Instead of completely disabling an infected computer by encrypting data and seeking a ransom payment, Adylkuzz uses the machines it infects to "mine" in a background task a virtual currency, Monero, and transfer the money created to the authors of the virus.
Virtual currencies such as Monero and Bitcoin use the computers of volunteers for recording transactions. They are said to "mine" for the currency and are occasionally rewarded with a piece of it.
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