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What is ccleaner.exe?

Part of CCleaner by Piriform Ltd

What is it?

CCleaner (formerly Crap Cleaner), developed by Piriform, is a utility program used to clean potentially unwanted files and invalid Windows Registry entries from a computer. CCleaner supports the cleaning of temporary or potentially unwanted files left by certain programs. CCleaner can be employed to uninstall programs. In addition, CCleaner allows the alteration of start-up programs.
Description of ccleaner.exe from Piriform Ltd
CCleaner is our system optimization, privacy and cleaning tool. It removes unused files from your system - allowing Windows to run faster and freeing up valuable hard disk space. It also cleans traces of your online activities such as your Internet history. Additionally it contains a fully featured registry cleaner. But the best part is that it's fast (normally taking less than a second to run) and contains NO Spyware or Adware!
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How does ccleaner.exe run?

Process - ccleaner.exe is an instance of a running program. This 32-bit program executes with the privileges as the currently logged in user account. ccleaner.exe is executed by the process taskeng.exe (Task Scheduler Engine by Microsoft).

How does ccleaner.exe start?

Scheduled task - ccleaner.exe is launched automatically by registering itself into the Windows Task Scheduler under the task name '\CCleanerSkipUAC'. Task Scheduler provides the ability to schedule the launch of programs or scripts at pre-defined times or after specified time intervals or even with event-based triggers.
Startup files (user) run - ccleaner.exe is registered with the run identifier 'ccleaner' and the execution command '"C:\Program Files\CCleaner\CCleaner.exe" /AUTO' in the Windows registry HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run. Run keys are startup registry keys that are used to launch an application automatically when a user logs into Windows.


What is the community is seeing?What is the community is doing?
About 0.3% of all Boost users have the ccleaner.exe process running.Of the 0.3% of ccleaner.exe users, 16.7% have disabled it.
How resource intensive is ccleaner.exe?
Comparison based on the average resource utilization across all programs.
0.05771% CPU577066.3%
Average CPU utilization across all programs is 0.00001%.
6.63 MB RAM30.8%
Average private memory utilization across all programs is 21.53 MB.
1,036 /min46.0%
Average I/O read and write operations for all programs is 2,253 per minute.
147 GDI objects98.0%
Average number of GUI GDI and USER objects for all programs is 150.
Typical file (disk image) location:
C:\Program Files\ccleaner\ccleaner.exe

Are there other versions of CCleaner?

What else is related?

What Windows OS versions does this run on?

Windows 7 Ultimate (6.1.7601.65536)
Windows 8.1 Pro (6.2.9200.0)
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File details

File name: ccleaner.exe
Publisher: Piriform Ltd (verified)
Name: CCleaner
Description: CCleaner
Version: 4, 11, 00, 4619
Size: 4.3 MB
Original file name: ccleaner.exe

Digital certificate

Issued to: Piriform Ltd
Certificate authority: VeriSign
Effective date: 7/5/2011
Expiration date: 8/22/2013

Resource utilization

CPU utilization averages
Total CPU: 0.1251704236%
Privileged CPU: 0.0674637918%
User CPU: 0.05770663181967%
Privileged CPU time: 32953.12 ms
Privileged CPU time /min: 1,374 ms
CPU cycle count: 2,002,536,864
CPU cycle count /min: 1,151,056,458
Memory utilization averages
Committed memory: 99.86 MB
Peak committed memory: 109.15 MB
Paged memory: 6.63 MB
Peak paged memory: 9.84 MB
Paged system memory: 92.07 KB
Non-paged system memory: 10.04 KB
Working set memory: 7.68 MB
Peak working set memory: 12.32 MB
Min working set memory: 324 KB
Private memory: 6.63 MB
Page faults: 2,435,550
Page faults /min: 101,565
Process I/O averages
Total read operations: 24,807
Read operations /min: 1,034
Total read transfer: 1.78 GB
Read transfer /min: 417.74 MB
Total write operations: 48
Write operations /min: 2
Total write transfer: 968.58 KB
Write transfer /min: 40.39 KB
Total other operations: 96,671
Other operations /min: 4,031
Total other transfer: 4.35 MB
Other Transfer /min: 185.54 KB
GUI Object Averages
GDI objects: 147
Peak GDI objects: 153
USER objects: 57
Peak USER objects: 63
Handle count average: 183
Thread count average: 4
Thread resource averages

Process details

Runs as (owner): User
Integrety level: High
Windows platform: 32-bit
Parent Process
Process Command
"C:\Program Files\CCleaner\CCleaner.exe" /uac

Scheduled task details

Name: CCleanerSkipUAC
Command: \CCleanerSkipUAC

Startup files (user) run details

Name: ccleaner
Command: "C:\Program Files\CCleaner\CCleaner.exe" /AUTO

Network connectivity

Windows Firewall allowed program: Yes

Image hashes

MD5: 04505c46f9cb7d8f8769b566edc42282
SHA-1: 46722ae2b6c1e5b528ef87ef7cc634f8a693fb53

PE image details

File packed: No
Import Table
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