In early September 2022, we discovered several new malware samples belonging to the MATA cluster. As we were collecting and analyzing the relevant telemetry data, we realized the campaign had been launched in mid-August 2022 and targeted over a dozen corporations in Eastern Europe from the oil and gas sector and defense industry. The actors behind the attack used spear-phishing mails to target several victims, some were infected with Windows executable malware by downloading files through an int...