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HomeCyber SecurityProfessionals Discover Main points on Maui Ransomware Assault via North Korean Hackers

Professionals Discover Main points on Maui Ransomware Assault via North Korean Hackers

Professionals Discover Main points on Maui Ransomware Assault via North Korean Hackers

The primary ever incident in all probability involving the ransomware circle of relatives referred to as Maui passed off on April 15, 2021, aimed toward an unnamed Jap housing corporate.

The disclosure from Kaspersky arrives a month after U.S. cybersecurity and intelligence businesses issued an advisory about the usage of the ransomware pressure via North Korean government-backed hackers to focus on the healthcare sector since a minimum of Might 2021.

A lot of the knowledge about its modus operandi got here from incident reaction actions and trade research of a Maui pattern that exposed a loss of “a number of key options” generally related to ransomware-as-a-service (RaaS) operations.

Now not simplest is Maui designed to be manually performed via a far flung actor by way of a command-line interface, additionally it is notable for now not together with a ransom observe to offer restoration directions.


Therefore, the Justice Division introduced the seizure of $500,000 value of Bitcoin that have been extorted from a number of organizations, together with two healthcare amenities within the U.S. states of Kansas and Colorado, via the usage of the ransomware pressure.

Whilst those assaults were pinned on North Korean complex chronic danger teams, the Russian cybersecurity company has related the cybercrime with low to medium self belief to a Lazarus subgroup referred to as Andariel, often referred to as Operation Troy, Silent Chollima, and Stonefly.

“Roughly ten hours previous to deploying Maui to the preliminary goal device [on April 15], the crowd deployed a variant of the well known Dtrack malware to the objective, preceded via 3proxy months previous,” Kaspersky researchers Kurt Baumgartner and Seongsu Park stated.

Dtrack, also known as Valefor and Preft, is a far flung get right of entry to trojan utilized by the Stonefly crew in its espionage assaults to exfiltrate delicate data.

Maui Ransomware Attack

It is value stating that the backdoor, along 3proxy, was once deployed via the danger actor towards an engineering company that works within the power and armed forces sectors in February 2022 via exploiting the Log4Shell vulnerability.

“Stonefly makes a speciality of mounting extremely selective focused assaults towards objectives that might yield intelligence to help strategically essential sectors reminiscent of power, aerospace, and armed forces apparatus,” Symantec, a department of Broadcom Tool, stated in April.

Moreover, Kaspersky stated that the Dtrack pattern used within the Jap Maui incident was once extensively utilized to breach more than one sufferers in India, Vietnam, and Russia from December 2021 to February 2021.


“Our analysis means that the actor is quite opportunistic and may compromise any corporate world wide, without reference to their line of commercial, so long as it enjoys just right monetary status,” the researchers stated.

This is not Andariel’s first tryst with ransomware as a method to reap financial features for the sanctions-hit country. In June 2021, a South Korean entity was once published to were inflamed via file-encrypting malware following an elaborate multi-stage an infection process that commenced with a weaponized Phrase report.

Then remaining month, Microsoft disclosed that an rising danger cluster related to Andariel has been the usage of a ransomware pressure referred to as H0lyGh0st in cyberattacks focused on small companies since September 2021.


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