![]() ![]() ![]() In a blog post, Piriform confirmed that two programs released in August were compromised. “There is nothing a user could have noticed,” Williams said, noting that the optimisation software had a proper digital certificate, which means that other computers automatically trust the program. Talos researcher Craig Williams said it was a sophisticated attack because it penetrated an established and trusted supplier in a manner similar to June’s “NotPetya” attack on companies that downloaded infected Ukrainian accounting software. At the time of the acquisition, the company said 130 million people used CCleaner.Ī version of CCleaner downloaded in August and September included remote administration tools that tried to connect to several unregistered web pages, presumably to download additional unauthorised programs, security researchers at Cisco’s Talos unit said. The malicious program was slipped into legitimate software called CCleaner, which cleans up junk programs and advertising cookies to speed up devices.ĬCleaner is the main product made by London’s Piriform, which was bought in July by Prague-based Avast, one of the world’s largest computer security vendors. This came after security researchers at Cisco Systems Inc CSCO.O and Morphisec Ltd alerted Piriform's parent Avast Software of the hack last week. ![]() Piriform said it worked with law enforcement and cut off communication to the servers before any malicious commands were detected. More than 2 million people downloaded tainted versions of Piriform’s program, which then directed the computers to get instructions from servers under the hacker’s control, Piriform said. If you go back to Task Scheduler and click on 'Refresh' (on the right hand side under 'Actions' - see the screenshot) you should now be able to see the task and it should now be working properly.FILE PHOTO - A projection of cyber code on a hooded man is pictured in this illustration. That should now have reset the UAC control and turned it on so that you no longer see the UAC. Reopen CCleaner and the setting should have been turned off.Ĭlick the setting again to turn it on and without doing anything else close CCleaner. Open CCleaner Options>Advanced and click on the UAC setting to get the error message.Ĭlose the message and without doing anything else close CCleaner. If (as I suspect) you don't see the CCleanerSkipUAC task then try the following (I've triple checked and this works for me everytime). If you see it, (you possibly won't), then select 'CCleanerSkipUAC' and then select the 'Actions' tab and see if the command line ends in "$(Arg0)" as shown below. On the left select 'Task Scheduler Library' and it will show you a list of the scheduled tasks that have been set up. Open the start menu (Windows icon on the taskbar) and start typing the word 'task' (no need to use the searchbox just start typing).Ī window will open showing various apps/settings connected to tasks - click on 'Task Scheduler' and it will open. That depends on if Microsoft intended that change(s) or not.Īnyway, to go back to the Skip UAC task, and I now have a fix/workround for this issue: It may be fixed by Microsoft soon, or it may need the CCleaner developers to fix with an update to CCleaner. Which leads me to believe that it is probabably something that has been changed by Windows in the 20H2 update. ![]() (I'm also seeing a different error/warning when trying to change the 'save settings to INI file' setting in CCleaner). I've done some more testing and I'm currently seeing the same "The system cannot find the path specified" warning if I try to change the Skip UAC setting in CCleaner. ![]()
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