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CCleaner virus false positive?

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Is this a virus in the installer?
I checked the installer on the VirusTotal website and Trojan.Agent seemed! KfmOoKkQb5g.
Edited by DenisPritula
wrong wrote
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I presume you are talking about the CCleaner installer which you got from the Piriform website?

Looks like a false positive by Yandex.

CCleaner documentation can be found here


Support contact




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To confirm:

  1. That is the hash of the install from the 5.60 download build from the CCleaner website
  2. As you can see from one one engine out of 62 detecting anything (and none of the major AV engines) this is indeed a false positive.

This sort of thing happens now and then.  Conservative engines may err on the side of caution for "new" files - and we're always new since we release updates about once a month. Also, behavioural analysis engines can get a bit suspicious of a tool that wants to change registry entries, delete files, etc, etc - which is all, of course, intended behaviour for a cleaner. 

Piriform Homepage - [CCleaner - CCleaner Mac - CCleaner Android - CCleaner Browser - Defraggler - Recuva - Speccy - Kamo] - Product Support

Looking for your licence key, expiry date or download link? Check here first: https://www.ccleaner.com/support/license-lookup

To find out how we protect your privacy - read CCleaner's Data Factsheet.

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  • 4 months later...
  • 2 months later...
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Please stop making repeated posts on old threads.

I have given you a reply here, it is a Windows Update problem and I also tell you how to fix it:


*** Out of Beer Error ->->-> Recovering Memory ***

Worried about 'Tracking Files'? Worried about why some files come back after cleaning? See this link:


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