CCleaner 5.33 and CCleaner Cloud 1.07.3191 Infected Installers

[tom982]

The official, Piriform signed, CCleaner installers for these versions were compromised and installed malware on the host systems.

See here for more details: Cisco's Talos Intelligence Group Blog: CCleanup: A Vast Number of Machines at Risk

 

[Digerati]

Note a new clean version is available for download from here.