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
d730e1f37508011b9c0874f2998ef907
DLL
a6eca65b96de430659a84bf20296e4f3
DLL
66677a3eaf17de2ea282ff59d4ca6a87
DLL
d45dc78c2df2b4f937e0a9ef46c285c7
DLL
5bfe42f8495e338b3c42e2a74b47e644
DLL
12c01b3c44fbbb15f44d36dd7eb5fea8
DLL
eeecadd409a89035b5727cac1909c9d6
DLL
edf31313390e0ac7c3e303540db56652
DLL
a4e4a6638d79dfcce1cdffffb914258c
DLL
d657cce8f48f40c4e61e7b16de8df6b1