|Family||Pulsar (backdoor family)|
DoublePulsar is a backdoor implant tool developed by the U.S. National Security Agency's (NSA) Equation Group that was leaked by The Shadow Brokers in early 2017. The tool infected more than 200,000 Microsoft Windows computers in only a few weeks, and was used alongside EternalBlue in the May 2017 WannaCry ransomware attack. A variant of DoublePulsar was first seen in the wild in March 2016, as discovered by Symantec. 
Sean Dillon, senior analyst of security company RiskSense Inc., first dissected and inspected DoublePulsar. He said that the NSA exploits are "10 times worse" than the Heartbleed security bug, and use DoublePulsar as the primary payload. DoublePulsar runs in kernel mode, which grants cybercriminals a high level of control over the computer system. Once installed, it uses three commands: ping, kill, and exec, the latter of which can be used to load malware onto the system.
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- Sterling, Bruce. "Double Pulsar NSA leaked hacks in the wild".
- "Seriously, Beware the 'Shadow Brokers'". 4 May 2017 – via www.bloomberg.com.
- "Wana Decrypt0r Ransomware Using NSA Exploit Leaked by Shadow Brokers Is on a Rampage".
- ">10,000 Windows computers may be infected by advanced NSA backdoor".
- Cameron, Dell. "Today's Massive Ransomware Attack Was Mostly Preventable; Here's How To Avoid It".
- Fox-Brewster, Thomas. "How One Simple Trick Just Put Out That Huge Ransomware Fire".
- "Player 3 Has Entered the Game: Say Hello to 'WannaCry'". blog.talosintelligence.com. Retrieved 2017-05-15.
- "Stolen NSA hacking tools were used in the wild 14 months before Shadow Brokers leak". arstechnica.com. Retrieved 2019-05-07.
- "DoublePulsar Initial SMB Backdoor Ring 0 Shellcode Analysis". zerosum0x0.blogspot.com. Retrieved 2017-05-16.
- "NSA's DoublePulsar Kernel Exploit In Use Internet-Wide". threatpost.com. Retrieved 2017-05-16.
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