BlackBasta attacks Heidelberg Materials
Date:
August 22, 2023
Overview
Title
BlackBasta attacks Heidelberg Materials
Victim
Heidelberg Materials
Attacker
BlackBasta
Location
Size of Attack
Unknown/TBD
First Reported
August 22, 2023
Last Updated
October 31, 2022
The BlackBasta ransomware gang has attacked Heidelberg Materials. Heidelberg Materials is a German multinational building materials company. It was known as HeidelbergCement AG until September 2022. BlackBasta posted Heidelberg Materials to its data leak site on August 22nd but provided no further details. BlackBasta is a RaaS that emerged in early 2022 and is assessed by some researchers to be a revival of the Conti and REvil attack groups. The group routinely exfiltrates sensitive data from victims for double extortion. BlackBasta engages in highly targeted attacks, and likely only works with a limited group of approved affiliates. Considering they just emerged in the spring of 2022, BlackBasta quickly became one of the most prolific attack groups moving into 2023. Black Basta was observed leveraging unique TTPs for ingress, lateral movement, data exfiltration data, and deploying ransomware payloads. Ransom demands vary depending on the targeted organization with reports that they can be as high as $2 million dollars. The BlackBasta RaaS continues to evolve their platform, with ransomware payloads that can infect systems running both Windows and Linux systems by exploiting vulnerabilities in VMware ESXi running on enterprise servers. Black Basta ransomware is written in C++, can target both Windows and Linux systems, encrypts data with ChaCha20 and then the encryption key is encrypted with RSA-4096 for rapid encryption of the targeted network. In some cases, Black Basta leverages malware strains like Qakbot and exploits including PrintNightmare during the infection process. Black Basta also favors abuse of insecure Remote Desktop Protocol (RDP) deployments. Black Basta typically targets manufacturing, transportation, construction and related services, telecommunications, the automotive sector, and healthcare providers. Black Basta also employs a double extortion scheme and maintains an active leaks website where they post exfiltrated data if an organization declines to pay the ransom demand.
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