CCleaner

CCleaner

by Piriform

What is CCleaner?

CCleaner is software application developed by Piriform. It is most commonly found on computers running Windows 7 with nearly 44.25% of installations running this operating system. CCleaner's installer is typically 2.00 MB in size and installs around 71 files. The most common release is 3.28 with 0.19% of all installations currently using this version.

CCleaner is most popular in the United States with 30.39% of installations residing in this country.

CCleaner adds 3 scheduled tasks to the Windows Task Scheduler launching the program at randomly scheduled times. When using a computer that is connected to the internet, CCleaner is known to create 1 firewall exception to allow inbound and outbound connectivity.

About CCleaner?

CCleaner, developed by Piriform, is a powerful utility program designed to clean unnecessary files and invalid Windows Registry entries from a computer. It supports the removal of temporary files left by specific programs, browsing history, cookies, recycle bin contents, memory dumps, file fragments, log files, system caches, application data, and more. Additionally, CCleaner includes a registry cleaner to identify and address issues in the Windows registry, such as missing references to shared DLLs, unused registration entries for file extensions, and missing references to application paths.

Software Behaviors

Firewall:
  • CCleaner.exe is added as a firewall exception for 'C:\Program Files\CCleaner\CCleaner.exe'.
Scheduled tasks:
  • CCleaner.exe is scheduled as a task with the class '{61B39D67-FD4D-4257-9EA2-57B1E241F0A3}' (runs on registration).
  • CCUpdate.exe is scheduled as a task named 'CCleaner Update' (runs daily at 21.55).
  • CCleaner64.exe is scheduled as a task with the class '{D50F7AD8-A07D-463C-A310-DCC0A9AB6A8B}' (runs on registration).

Startup Entries

Startup tasks:
  • CCleaner.exe is automatically launched at startup through a scheduled task named 1.
  • CCUpdate.exe is automatically launched at startup through a scheduled task named CCleaner Update.
Registry entries:
  • CCleaner.exe is loaded in the current user (HKCU) registry as an auto-starting executable named 'CCleaner' and executes as "C:\Program Files\CCleaner\CCleaner.exe" /AUTO.
  • CCleaner64.exe is loaded in the current user (HKCU) registry as an auto-starting executable named 'CCleaner Monitoring' and executes as "C:\Program Files\CCleaner\CCleaner64.exe" /MONITOR.

Software Details

URL:
https://www.piriform.com/ccleaner
Support:
Installation path:
C:\Program Files\ccleaner
Uninstaller:
"C:\Program Files\CCleaner\uninst.exe"
Size:
2.00 MB
Language:
English

CCleaner Executable Details

Primary executable:
CCleaner.exe
Name:
CCleaner
Path:
C:\Program Files\ccleaner\CCleaner.exe
MD5:
SHA-1:
SHA-256:
Files installed by CCleaner
File Type Filename MD5
DLL
e45cedb0ba075387e6eabef15668552a
DLL
c9a1281a6e389f0d34eb2b505f832dc0
DLL
9be0648841403517e24fab443644aeef
DLL
72408a4d64b79e52ea3646e6947b3d48
DLL
4dcfd3e4192b0111a2753008b6205ae7
DLL
c29f4cffbdf258a657263aac5f09a96e
DLL
7c675120d7d0c6be802076a6b6380380
DLL
953a9bdd6e7bfbfae438e34457db4708
DLL
d585f7f3633c917c3d6bbb2f6c7e2d33
DLL
b10d983fc3de190ae7f4cd18fbaafc59