The popular CCleaner antivirus has been installing
malware since the month of August of 2017 in a bad way.
Specifically, the 32-bit versions, which are identified as
CCleaner v5.33.6162 and CCleaner Cloud v1.07.3191
have been affected.
The Trojan could have affected about 4 million
of people, according to their estimates.
The figure could continue to increase if it is not
removed from Internet effectively versions of
CCleaner affected by this attack.
https://forums.malwarebytes.com/topic/211008-infected-by-ccleaner-windows-64bit/
After this ... You will have to change the cleaner, this
takes a very fat Trojan and can easily spoil your computer.
By the way ... the version for ANDROID, also carries
the Trojan hidden, which can slow down all your
mobile or tablet.
If this is happening to you, look for another cleaner
that will erase your cache and junk files of your ANDROID.