If these services are required, use strong passwords or Active Directory authentication. Disable File and Printer sharing services.Keep operating system patches up-to-date. The Lazarus APT group, also known as Hidden Cobra, has been active since at least 2009 and is widely believed to be a state-sponsored hacking group associated with the North Korean government.Maintain up-to-date antivirus signatures and engines.Any configuration changes should be reviewed by system owners and administrators prior to implementation to avoid unwanted impacts. End TCP session header- RecommendationsĬISA recommends that users and administrators consider using the following best practices to strengthen the security posture of their organization's systems. Proxy-Authorization: NTLM TlRMTVNTUAABAAAAB4IIAAwADAAoAAAADwAPADQAAAAAAAAAAAAAAFdXVy5HT1RPLkNPTVdJTi00OUFUTlVSNjZNVA= User-Agent:Mozilla/4.0 (compatible MSIE 5.5 Win32) This file is a variant of 8d9123cd2648020292b5c35edc9ae22e.ĭisplayed below is the session header of the initial authentication packet, sent to both the source and destination systems: The application is a command-line utility and its primary purpose is to tunnel traffic between two IP addresses. This file is a malicious Windows 32-bit executable. Packers/Compilers/Cryptors Microsoft Visual C++ ?.? Yara Rules hidden_cobra_consolidated.yara The malware can be configured with a proxy server/port and proxy username and password. The malware continuously attempts to reach out to the source and the designation system, which allows either side to initiate a tunneling session. The malware implements a custom protocol that allows traffic to be tunneled between a source and a destination Internet Protocol (IP) address. Group 77, Guardian of Peace, Guardians of Peace, Hastati Group, HIDDEN COBRA, Labyrinth Chollima, Lazarus, NewRomantic Cyber Army Team, NICKEL ACADEMY. This report provides analysis of two malicious 32-bit Windows executable file. Users or administrators should flag activity associated with the malware, report the activity to the DHS National Cybersecurity and Communications Integration Center (NCCIC) or the FBI Cyber Watch (CyWatch), and give the activity the highest priority for enhanced mitigation. This MAR includes malware descriptions related to HIDDEN COBRA, suggested response actions and recommended mitigation techniques. For more information on HIDDEN COBRA activity, visit https//DHS, FBI, and DoD are distributing this MAR to enable network defense and reduce exposure to North Korean government malicious cyber activity. Government refers to malicious cyber activity by the North Korean government as HIDDEN COBRA. Government partners, DHS, FBI, and DoD identified proxy malware variants used by the North Korean government - referred to by the U.S. ![]() ![]() Some organizations track North Korean clusters or groups, such as Bluenoroff, APT37, and APT38 separately, while other organizations track some activity associated with those groups as Lazarus Group.This Malware Analysis Report (MAR) is the result of analytic efforts between the Department of Homeland Security (DHS), the Federal Bureau of Investigation (FBI), and the Department of Defense (DoD). Some organizations use Lazarus Group to refer to any activity attributed to North Korea. North Korean group definitions have significant overlap, and the name Lazarus Group encompasses a broad range of activity. In late 2017, Lazarus Group used the disk-wiping tool KillDisk in an attack against an online casino based in Central America. Malware used by Lazarus Group has correlated to other reported campaigns, including Operation Flame, Operation 1Mission, Operation Troy, DarkSeoul, and Ten Days of Rain. The group has been active since at least 2009, and was reportedly responsible for the November 2014 destructive wiper attack against Sony Pictures Entertainment as part of the campaign Operation Blockbuster, which was named by Novetta. Lazarus Group is a threat group that has been attributed to the North Korean government.
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