What is CCleaner malware?

CCleaner malware refers to the malicious code found in certain versions of the CCleaner software in 2017. This code, implanted in the 32-bit applications of CCleaner version 5.33.6162 and CCleaner Cloud version 1.07.3191, had the capability to execute arbitrary commands, potentially leading to privacy breaches and further malicious activities. The malware could gather information such as hostnames, installed software lists, running process lists, and MAC addresses of network cards, and send them to a remote server.