New version detected as malware by 2 vendors [fixed] in CCleaner Bug Reporting Posted July 30, 2020 The most recent release v5.69.7865 has been detected by Windows Defender and Hybrid Analysis as PUP in Windows 10 and as totally malicious by Hybrid Analysis. I've had the free version installed for a few days now and Defender just picked it up. I removed it and redownloaded the setup file, scanned that with Hybrid Analysis and the screenshots show all. False positive? I don't run it in the back round, however if it is doing things on it's own that's a problem.