![]() If you now look at what you've captured (or open the. I chose to save "All Events" in the native PML format. In ProcMon's File menu, we can save the capture for later review. We then exit the CCleaner program and toggle off the capture button in ProcMon. In the lower part of the Cleaner option window, we press the "Analyze" button and when the analysis completes, we then press the "Run Cleaner" button. ![]() Now we press the ProcMon capture button and launch the CCleaner program. If it doesn't have the red line, toggle the button to stop monitoring. In the remaining main window, the capture button (third button from the left) should have a magnifying glass with a red line through it meaning ProcMon is not currently capturing any events. Using ProcMon to analyse CCleaner's Cleaner FunctionĪfter launching the ProcMon.exe (does not require installation), the user is first shown a popup filter window. A warning does pop up when the check box is selected recommending it stay unchecked for normal use due to the extra time it takes.įurther unchecked by default "Cleaner" Options include:Īdditionally, under Option-Advanced settings, the "Only delete files in Windows Temp folder older than 24 hours" option is checked by default.Īs you can see, there's a shedload of CCleaner functionality to investigate. There is also another option to "Wipe MFT Free Space" but presumably the user must either call the inbuilt "Drive Wiper" tool explicitly OR check the "Wipe Free Space" Cleaner option (not checked by default). This is not enabled by default but if it works as advertised, I suspect file recovery will be close to impossible. Just FYI - there is a "Secure Delete" overwrite setting (under Option-Settings) which can be used to overwrite deleted files from 1 to 35 times. Nor will we be investigating the Registry clean of old/unused entries functionality. Options (Secure Delete and Wipe Free Space settings, Cookies to delete/keep, Folders to delete/exclude, some further Advanced Settings).Īs the objective is to write a RegRipper plugin to detect CCleaner installation/settings, we won't be trying to recover any deleted files at this time. Tools (running Uninstallers, selecting Windows Startup programs, selecting Internet Explorer startup plugins, removing System Restore Points, setting the (free/whole drive) Drive Wiper settings) and Registry (for selecting the Registry cleaning settings), Cleaner (for selecting which Windows/Application log files to clean), The CCleaner installer can be found here.Īfter installing (for all users) and launching, there are 4 main menu buttons on the left hand side of the app window: You can get your mits on the ProcMon executable here. Hopefully, the CCleaner installer will leave some artifacts in the registry which we can then parse using our RegRipper plugin to prove that CCleaner was installed on the PC/see what user settings were set. Once we have finished our (very) basic analysis, we shall then write a RegRipper plugin (in Perl) and test it using the SIFT v2.12 VM. Since testing completed, an update has been released (). It cleans Temporary (Internet and Windows) files, Browser History (downloads and forms), Cookies, Recycle Bin, the Recent Documents list, old log files and old/unused Registry entries. As this program gets mentioned quite often on the LifeHacker website, I thought I'd try it out. It was my other computer where Wipe Free Space under Advanced under Cleaner, Windows was checked that I discovered took forever as I did not notice the check mark in this box as I have to scroll down to see it.I thought I would do another multi-part post - this time we will use SysInternals ProcMon (v 2.96) monitoring software to investigate the CCleaner (v ) Windows Cleaner program. I could uninstall and reinstall and see if they are still checked. I say these are selected by default because I certainly did not select them.Īre you telling me these boxes should not be checked. Under this box there is a separate option Under my OPTIONS, BASIC SETTINGS TO CONTROL HOW CCLEANER FUNCTIONS these functions seem to be selected by default ![]() Restoring default settings in Cleaner, Windows does not change the settings in Options,settings. I do see when you right click on Cleaner, Windows and click on Restore default state that the WIPE FREE SPACE is not checked but on my CCleaner when I choose OPTIONS, BASIC SETTINGS TO CONTROL HOW CCLEANER FUNCTIONS there does not seem to be any option to click on anything to restore default settings. I have version V (64-bit) and I assume it is current.
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