Knauf. They produce drywall boards, among other building materials. You probably dwell a home where these products are built in. Excerpt from linked Wikipedia article:

In 2022, after the invasion of Ukraine by Russia, Yale University published a list of companies that chose to remain active in Russia. According to this report, over 600 companies have withdrawn from Russia — but some remain. Knauf is still operating across 14 sites in Russia but has claimed to have suspended new investments.[5].
In November 2023 Ukraine listed Knauf as an International Sponsor of War for promoting mobilisation in Russia by sending its employees to the war against Ukraine.[6].
According to German public-service broadcaster ARD, Knauf has been active in collaborating with the Russian military in its construction efforts in the Russian-occupied areas of Ukraine.[7][8]

Another source (German), 2024 states, that due to investigation of a news outlet, they allegedly withdrew their actions.

Withdrawal in response to ARD investigation?
Only recently, the plaster company from Lower Franconia hit the headlines because of its activities in Russia: Research by the ARD magazine “Monitor” suggested that Knauf had violated EU sanctions against Russia. Whether the withdrawal from Russia is connected to the allegations made was neither confirmed nor denied by the company to BR24 today and a press spokeswoman did not wish to comment on the matter in response to a written request.

They probably wanted to have a foot in the door when it comes to rebuilding, when the war will be over finally.

Another, probably more known company is Claas, a manufacturer of farming equipment like combine harvesters and such. Another source (German), 2023 claims

The company condemns Russia’s attack on Ukraine, said Mohr. Nevertheless, Claas cannot and does not want to withdraw from one of the world’s most important agricultural regions. “Both countries are enormously important for feeding the world’s population. That’s why farming must continue there,” Mohr told the SZ newspaper, adding that harvesting machines were essential for this.