Question: What Is Eternal Blue?

How was Eternal Blue stolen?

The EternalBlue exploit was allegedly stolen from the National Security Agency (NSA) in 2016 and leaked online on April 14, 2017 by a group known as Shadow Brokers.

The exploit targets a vulnerability in Microsoft’s implementation of the Server Message Block (SMB) protocol, via port 445..

What port does Eternal Blue use?

The attack uses SMB version 1 and TCP port 445 to propagate.

Why is SMB so vulnerable?

A vulnerability has been discovered in Microsoft Windows SMB Server that could allow for remote code execution. This vulnerability is due to an error in handling maliciously crafted compressed data packets within version 3.1. … An exploited SMB server could then be leveraged to exploit SMB clients.

What is SMB attack?

Some of the most devastating ransomware and Trojan malware variants depend on vulnerabilities in the Windows Server Message Block (SMB) to propagate through an organization’s network. Windows SMB is a protocol used by PCs for file and printer sharing, as well as for access to remote services.

What is SMB used for?

The Server Message Block (SMB) protocol is a network file sharing protocol that allows applications on a computer to read and write to files and to request services from server programs in a computer network. The SMB protocol can be used on top of its TCP/IP protocol or other network protocols.

What is eternal blue attack?

EternalBlue is a cyberattack exploit developed by the U.S. National Security Agency (NSA). … On May 12, 2017, the worldwide WannaCry ransomware used this exploit to attack unpatched computers. On June 27, 2017, the exploit was again used to help carry out the 2017 NotPetya cyberattack on more unpatched computers.

How did eternal blue work?

How Is Eternalblue Used? … Essentially, Eternalblue allowed the ransomware to gain access to other machines on the network. Attackers can leverage DoublePulsar, also developed by the Equation Group and leaked by the Shadow Brokers, as the payload to install and launch a copy of the ransomware on any vulnerable target.

What is EternalBlue SMB exploit?

EternalBlue is an exploit that allows cyber threat actors to remotely execute arbitrary code and. gain access to a network by sending specially crafted packets. It exploits a software vulnerability. in Microsoft’s Windows operating systems (OS) Server Message Block (SMB) version 1 (SMBv1)

How was WannaCry stopped?

The attack was halted within a few days of its discovery due to emergency patches released by Microsoft and the discovery of a kill switch that prevented infected computers from spreading WannaCry further.

What is the most dangerous hacker tool?

John the Ripper. … THC Hydra. … OWASP Zed. … Wireshark. … Aircrack-ng. … Maltego. … Cain and Abel. Cain & Abel is a password recovery tool for Microsoft Operating Systems. … Nikto Website Vulnerability Scanner. Nikto is another classic ‘Hacking Tool’ that a lot of pentesters like to use.More items…

Who hacked NSA?

NSA insider threat In October 2016, The Washington Post reported that Harold T. Martin III, a former contractor for Booz Allen Hamilton accused of stealing approximately 50 terabytes of data from the National Security Agency (NSA), was the lead suspect.

Why is SMB used?

The Server Message Block Protocol (SMB protocol) is a client-server communication protocol used for sharing access to files, printers, serial ports and other resources on a network. It can also carry transaction protocols for interprocess communication.