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
EXE
6722ebaedff6688a1c75402d52dca54f
EXE
6ef689db7de5b0480a628a2f1bceac12
DLL
ddf12820b96564693fc054637f33d73f
EXE
f679e30a5f7ce39f7fa134e61bd2d6d3
EXE
a1a819068fd68bbb27c0c994f2400606
EXE
12401373cfae668a283f963af2feff78
EXE
a38b73f7d349b661e4159e791a5a509a
EXE
1c0c02bf6bc237e70c78d57753499e8e
EXE
bf9f6c3c42f674480cbc1bebd6bd4bd7
EXE
e4f9f312eb13bcd9e909aa5a26b9cb0f