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
f2cca7e48c97a96b3b61a5782e46f4ca
DLL
fce1db114f8c58604a43407905346fa8
DLL
587d647bf9472d4d204da247db522209
DLL
328ee6fcd576cc7404ff731299da32f1
DLL
1ea75166eaaaa2291278ab0fc679360d
DLL
3fe4399a41be595a513cafb0671fd194
DLL
04ed1cf4db75742227ac0c480da09dc1
DLL
e746ef822b768903f6e7ea966f46996c
DLL
184104369a1eb1bd994030e181815e63
DLL
cf1aad4c476d587c6c22bbd82885dada