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  • Dark Angels Team ransomware group hit Johnson Controls

Dark Angels Team ransomware group hit Johnson Controls

Pierluigi Paganini September 28, 2023

Johnson Controls International suffered a ransomware attack that impacted the operations of the company and its subsidiaries.

Johnson Controls International plc is a multinational conglomerate with a diversified portfolio of products and services primarily focused on building technologies and solutions. The company provides HVAC (heating, ventilation, and air conditioning), solutions for building automation, fire and security systems, and components for energy management.

Johnson Controls International announced it has suffered a ransomware attack that impacted many systems of the company, Bleeping Computer reported.

“The threat actors also claim to have stolen over 27 TB of corporate data and encrypted the company’s VMWare ESXi virtual machines during the attack.” reported Bleeping Computer.

Today Johnson Controls, an ICS/SCADA vendor, confirmed they were a victim of Dark Angels ransomware group.

Dark Angels claims to have have exfiltrated 27TB of sensitive data from Johnson Controls

We are unfamiliar with Dark Angels ransomware group. pic.twitter.com/I28yddzIqB

— vx-underground (@vxunderground) September 27, 2023

The attack took place over the weekend and threat actors initially breached the systems at Asia offices, the ransomware also targeted the VMware ESXi servers.

The security breach forced the company to shut down its systems to prevent the threat from spreading

“Johnson Controls International plc (the “Company”) has experienced disruptions in portions of its internal information technology infrastructure and applications resulting from a cybersecurity incident.”  reads the 8-K form filed with SEC. “To date, many of the Company’s applications are largely unaffected and remain operational. To the extent possible, and in line with its business continuity plans, the Company implemented workarounds for certain operations to mitigate disruptions and continue servicing its customers. However, the incident has caused, and is expected to continue to cause, disruption to parts of the Company’s business operations.”

Immediately after detecting the intrusion, the company launched an investigation with the help of leading third-party cybersecurity experts and is also coordinating with its insurers. The investigation is still ongoing and aims at determining the scope of the incident. The Company is assessing whether the security breach will impact its ability to timely release its fourth quarter and full fiscal year results, as well as the impact on its financial results.

Security researcher Gameel Ali speculated that Johnson Controls was the victim of the Dark Angels Team extortion group that has developed a new variant of their Linux ransomware.

Dark Angels Team created a new variant of their linux ransomware to target @johnsoncontrols.
new sample: fe8b6b7c3c86df0ee47a3cb04a68891fd5e91f3bfb13482112dd9042e8baebdf
old sample: 3b56cea72e8140a7044336933cf382d98dd95c732e5937a0a61e0e7296762c7b pic.twitter.com/veAgLH8Ptf

— Gameel Ali 🤘 (@MalGamy12) September 27, 2023

According to BleepingComputer, the ransomware group is demanding $51 million to provide a decryptor, the amount of the ransom was confirmed by Malware Hunter Team researchers:

Dark Angels' base ransom amount for Johnson Controls is $51 million.
😂
More details: https://t.co/o8NrNg9E7L https://t.co/4kDV1EMojU

— MalwareHunterTeam (@malwrhunterteam) September 27, 2023

The researchers believe that the ransomware used in the attack is basically still the same RagnarLocker Linux ransomware developed in 2021.

Why you say "a new variant", when at the same time mentioned an old sample… that is the same thing = confirmed this is not a new variant?
Also about "their ransomware": this is basically still the same RagnarLocker Linux ransomware as it was in 2021: https://t.co/lQ3vibNcGG
🤷‍♂️

— MalwareHunterTeam (@malwrhunterteam) September 27, 2023

Why you say "a new variant", when at the same time mentioned an old sample… that is the same thing = confirmed this is not a new variant?
Also about "their ransomware": this is basically still the same RagnarLocker Linux ransomware as it was in 2021: https://t.co/lQ3vibNcGG
🤷‍♂️

— MalwareHunterTeam (@malwrhunterteam) September 27, 2023

Follow me on Twitter: @securityaffairs and Facebook and Mastodon

Pierluigi Paganini

(SecurityAffairs – hacking, Johnson Controls International)


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