Wednesday, November 30, 2022

Building materials giant Knauf is attacked by blackmail software

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On July 21, the German building materials giant Knauf group announced that it had become a target of cyber attack. Its business operations were disrupted by the attack, forcing the global IT team to shut down all it systems to isolate the impact of the incident. The cyber attack occurred in the evening of June 29. As of the publication of this article, Knauf is still carrying out evidence investigation, incident response and remediation. Knauf wrote in a brief announcement on the website home page, “we are currently working to mitigate the impact on our customers and partners.

All factories are operating normally and all businesses are offline. We apologize for any inconvenience or delay in the delivery process that may occur.” Knauf is a multinational manufacturer of building materials headquartered in Germany, with a share of about 81% in the global wallboard Market. Knauf has 150 production bases in many countries around the world, and is also the owner of Knauf insulation materials company and USG company in the United States. It is worth noting that Knauf thermal insulation material company also issued a notice about cyber attack on its website, which shows that it has also been affected. Although Knauf did not specify the specific type of attack encountered in the announcement, from the perspective of the duration of the event, the impact and the difficulty of IT system recovery, this is probably a blackmail software attack.

In fact, the blackmail software Gang named Black basta has announced on its website that Knauf was listed as a victim on July 16. This is also equivalent to declaring responsibility for the attack. The extortion software Gang also released a batch of data, which is said to be 20% of all documents stolen from Knauf during the attack.

So far, more than 350 visitors have visited these files. The black basta blackmail software Gang launched the RAAS attack for the first time in April 2022, and quickly gained fame with its dual blackmail against high-profile victims. According to the early knowledge and negotiation style, many security experts believe that black basta should be the new “vest” after conti’s transformation.

By June 2022, black basta began to cooperate with qbot (quakbot) to spread its blackmail software, and began to launch cobalt strike and assist in horizontal movement within the victim network. In addition, this group of malicious hackers also specially made a Linux version of their blackmail software to invade VMware esxi virtual machines running on Linux servers.

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