I use the free version of CCleaner. The version I had was V5.33.6162. An update was offered, and installed theoretically but still kept the old version - not the 6207 that was offered. I tried twice, on 2 computers with the same result - (asks "do you want the new version?"). I do a custom install to miss out pinning to the start menu. Any other CCleaner users had this problem?
Updated ok now. The problem was that on the first day the offered download ( wrongly) was 533 so when it installed it kept saying there was a new version. Sometime yesterday the download was 534 . This gave the correct new version .
"*The Cisco Talos researchers recommended that affected systems - of which there could be thousands - should be restored to a state before August 15 2017 or reinstalled.
However, they emphasised that updating to CCleaner version 5.34 does not fix the problem as the malware will remain on infected systems.*"
As a postscript - It seems that Filehippo's link to the ccsetup 533 was compromised. My Defender found the following and quarantined it (on 29 Sept): Backdoor:Win32/Floxif, found in the following location: D:userfiles\Downloads\ccsetu533(1).exe
Now, if I get an update prompt from ccleaner, I go to the Piriform website to download it rather than the automatic prompt.