The version 5.33 of CCleaner[1] has been reported as compromised (only the 32bits version) and delivers a malware during the installation. If you installed CCleaner between Augustus 15th and September 12th, you better have to search for potentially infected systems. Here is the list of DGA domains that could help to track the infected hosts:
Article Link: https://isc.sans.edu/diary/rss/22838