According to Glasswire (I am not real familiar with this yet), it says there is potentially a virus in the updater. Here is a bit of a cut and paste from their page.
SHA256:
1d488908989290c7ce58ccae36ed4a2c4ed06489b8c2248fb178327af4bcdbe8
File name:
1d488908989290c7ce58ccae36ed4a2c4ed06489b8c2248fb178327af4bcdbe8
Detection ratio:
1 / 67
Analysis date:
2017-12-20 23:00:31 UTC ( 3 days, 19 hours ago )
1
0
AnalysisThe file being studied is a Portable Executable file! More specifically, it is a Win32 EXE file for the Windows GUI subsystem.
Authenticode signature block and FileVersionInfo properties
Copyright
Copyright (c) 2017 AVAST Software
Product CCleaner
Original name CCUpdate.exe
Internal name CCUpdate.exe
File version 1, 0, 999, 0
Description CCleaner updater
Signature verification Signed file, verified signature
Signing date 12:53 PM 9/22/2017
Signers
[+] AVAST Software s.r.o.
[+] DigiCert High Assurance Code Signing CA-1
[+] DigiCert
Counter signers
[+] DigiCert Timestamp Responder
[+] DigiCert Assured ID CA-1
[+] DigiCert
PE header basic information
Target machine Intel 386 or later processors and compatible processors
Compilation timestamp 2017-09-14 11:07:04
Entry Point 0x00023C30
Number of sections 7