US issues warning against malware ‘Electricfish’ linked with North Korea

'LoJax' malware can survive operating system reinstallations

The Department of Homeland Security (DHS) and the Federal Bureau of Investigation (FBI) have issued a joint security warning about a new malware called “Electricfish,’’ which is allegedly linked to a state-sponsored North Korean cyberattack group.

The investigators uncovered the malware while they were tracking the activities of Hidden Cobra, it is believed that the group is sponsored by the North Korean government. 

The warning released by the US Computer Emergency Readiness Team on Thursday says that the malware is a 32-bit Windows executable program. After reverse engineering the sample, the malware was found to contain a custom protocol which permits traffic to be funneled between source and destination IP addresses.

‘’The malware implements a custom protocol that allows traffic to be funneled between a source and a destination Internet Protocol (IP) addressaa. The malware continuously attempts to reach out to the source and the designation system, which allows either side to initiate a funneling session.’’

‘’The malware can be configured with a proxy server/port and proxy username and password. This feature allows connectivity to a system sitting inside of a proxy server, which allows the actor to bypass the compromised system’s required authentication to reach outside of the network,’’ read warning. 

The whole list of Indicators of Compromise (IOC) for Electricfish can be downloaded here

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