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The simple act of getting on the Internet and downloading email or going to a Web page can expose your computer to malicious crackers who would love to take over your machine for their own use. Originally, the Security Tango was mostly for Windows-based computers. Government refers to malicious cyber activity by the North Korean government as HIDDEN COBRA.
To dance the Security Tango, click the Let's Dance link up above. I'm sure that those of you running Linux or a Macintosh used to laugh yourselves sick at all the machinations that your Windows-using friends had to go through to keep themselves safe. As Linux and the Mac have become more popular, we've see more viruses for them. government partners, DHS and FBI identified Internet Protocol (IP) addresses and other indicators of compromise (IOCs) associated with a Trojan malware variant used by the North Korean government—commonly known as Volgmer. For more information on HIDDEN COBRA activity, visit https://
When reviewing network perimeter logs for the IP addresses, organizations may find instances of these IP addresses attempting to connect to their systems.
For a downloadable copy of the MAR, see: Volgmer is a backdoor Trojan designed to provide covert access to a compromised system.
The greatest concentrations of dynamic IPs addresses are identified below by approximate percentage: As a backdoor Trojan, Volgmer has several capabilities including: gathering system information, updating service registry keys, downloading and uploading files, executing commands, terminating processes, and listing directories.
In one of the samples received for analysis, the US-CERT Code Analysis Team observed botnet controller functionality.
Yes, there are verified malware programs out there for both the Macintosh and for Linux. Equally importantly, if you don't at least run an antivirus program, you run the risk of passing a virus on to your Windows friends (assuming any of them actually talk to you). So I've split the Tango into parts - Windows, Linux, the Macintosh, etc. But you get to all of them by that same "Let's Dance! Original release date: November 14, 2017 | Last revised: November 15, 2017 Network systems This joint Technical Alert (TA) is the result of analytic efforts between the Department of Homeland Security (DHS) and the Federal Bureau of Investigation (FBI). FBI has high confidence that HIDDEN COBRA actors are using the IP addresses—listed in this report’s IOC files—to maintain a presence on victims’ networks and to further network exploitation.
DHS and FBI are distributing these IP addresses to enable network defense and reduce exposure to North Korean government malicious cyber activity.