cleanmgr.exe

  • File Path: C:\Windows\system32\cleanmgr.exe
  • Description: Disk Space Cleanup Manager for Windows

Screenshot

cleanmgr.exe cleanmgr.exe cleanmgr.exe

Hashes

Type Hash
MD5 CD0D99EBE88D11F55136EAE39CCF8F6E
SHA1 D0782098CBF41490EA1E54DB5D21A679F332A113
SHA256 ACD2CBFB4C9FB8FE20C21A7EC99445D1426CEE90FF3091115EB4C9484B69EA9D
SHA384 7C7C758E7276806F39DFEC6FC27DDEE007BD1532FD8A898CD6DB928F8337B51668458AC5FABD1B2D7089B714275384F5
SHA512 376F8F078B2922BA7400C265DCE243BC561560FBDF7D36C7E2B497D1CCB523D540C650BAADE4B15C4D061DC41634349A5E5D0ECD3305C44E790DC9DF3F4289BB
SSDEEP 3072:pgeEc5+S9MU6b+TF1CHhPy/BAEPGRvQhRkKqUa9antF5hvvJkuXpA:nz9yKQI/2E+ohSKq99UF5hvv/
IMP 98FFD535813DA56E7646C88F49DBE567
PESHA1 E7416A52089C70BE5FD8F67B90125B865AC4E7AE
PE256 98602FBF28063DF3044F5A50F87CA8CBF3CDF61DB56F93B9C816A636C39C13CD

Runtime Data

Child Processes:

DismHost.exe

Window Title:

USAGE

Open Handles:

Path Type
(R-D) C:\Windows\Fonts\StaticCache.dat File
(R-D) C:\Windows\System32\en-US\cleanmgr.exe.mui File
(RW-) C:\Users\user File
(RW-) C:\Windows\WinSxS\amd64_microsoft.windows.common-controls_6595b64144ccf1df_6.0.19041.1110_none_60b5254171f9507e File
\BaseNamedObjects\C:*ProgramData*Microsoft*Windows*Caches*{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0000000000000002.db Section
\BaseNamedObjects\C:*ProgramData*Microsoft*Windows*Caches*{DDF571F2-BE98-426D-8288-1A9A39C3FDA2}.2.ver0x0000000000000002.db Section
\BaseNamedObjects\C:*ProgramData*Microsoft*Windows*Caches*cversions.2 Section
\BaseNamedObjects\NLS_CodePage_1252_3_2_0_0 Section
\BaseNamedObjects\NLS_CodePage_437_3_2_0_0 Section
\Sessions\1\Windows\Theme449731986 Section
\Windows\Theme1396518710 Section

Loaded Modules:

Path
C:\Windows\system32\cleanmgr.exe
C:\Windows\System32\GDI32.dll
C:\Windows\System32\gdi32full.dll
C:\Windows\System32\KERNEL32.DLL
C:\Windows\System32\KERNELBASE.dll
C:\Windows\System32\msvcp_win.dll
C:\Windows\SYSTEM32\ntdll.dll
C:\Windows\System32\ucrtbase.dll
C:\Windows\System32\USER32.dll
C:\Windows\System32\win32u.dll

Signature

  • Status: Signature verified.
  • Serial: 33000002EC6579AD1E670890130000000002EC
  • Thumbprint: F7C2F2C96A328C13CDA8CDB57B715BDEA2CBD1D9
  • Issuer: CN=Microsoft Windows Production PCA 2011, O=Microsoft Corporation, L=Redmond, S=Washington, C=US
  • Subject: CN=Microsoft Windows, O=Microsoft Corporation, L=Redmond, S=Washington, C=US

File Metadata

  • Original Filename: CLEANMGR.DLL.MUI
  • Product Name: Microsoft Windows Operating System
  • Company Name: Microsoft Corporation
  • File Version: 10.0.19041.1 (WinBuild.160101.0800)
  • Product Version: 10.0.19041.1
  • Language: English (United States)
  • Legal Copyright: Microsoft Corporation. All rights reserved.
  • Machine Type: 64-bit

File Scan

  • VirusTotal Detections: 0/73
  • VirusTotal Link: https://www.virustotal.com/gui/file/acd2cbfb4c9fb8fe20c21a7ec99445d1426cee90ff3091115eb4c9484b69ea9d/detection

File Similarity (ssdeep match)

File Score
C:\WINDOWS\system32\cleanmgr.exe 71
C:\Windows\system32\cleanmgr.exe 68
C:\Windows\system32\cleanmgr.exe 68
C:\Windows\system32\cleanmgr.exe 72
C:\Windows\SysWOW64\cleanmgr.exe 68
C:\Windows\SysWOW64\cleanmgr.exe 71
C:\Windows\SysWOW64\cleanmgr.exe 68
C:\Windows\SysWOW64\cleanmgr.exe 61
C:\WINDOWS\SysWOW64\cleanmgr.exe 65

Possible Misuse

The following table contains possible examples of cleanmgr.exe being misused. While cleanmgr.exe is not inherently malicious, its legitimate functionality can be abused for malicious purposes.

Source Source File Example License
sigma proc_creation_win_susp_run_folder.yml - 'C:\Windows\System32\cleanmgr.exe' DRL 1.0
sigma proc_creation_win_uac_bypass_cleanmgr.yml description: Detects the pattern of UAC Bypass using scheduled tasks and variable expansion of cleanmgr.exe (UACMe 34) DRL 1.0
sigma proc_creation_win_uac_bypass_cleanmgr.yml CommandLine\|endswith: '"\system32\cleanmgr.exe /autoclean /d C:' DRL 1.0
sigma registry_event_bypass_uac_using_silentcleanup_task.yml description: There is an auto-elevated task called SilentCleanup located in %windir%\system32\cleanmgr.exe This can be abused to elevate any file with Administrator privileges without prompting UAC DRL 1.0
atomic-red-team T1548.002.md There is an auto-elevated task called SilentCleanup located in %windir%\system32\cleanmgr.exe This can be abused to elevate any file with Administrator privileges without prompting UAC (even highest level). MIT License. © 2018 Red Canary

Additional Info*

*The information below is copied from MicrosoftDocs, which is maintained by Microsoft. Available under CC BY 4.0 license.

cleanmgr

Applies to: Windows Server 2022, Windows Server 2019, Windows Server 2016, Windows Server 2012, Windows Server 2008 R2

Clears unnecessary files from your computer’s hard disk. You can use command-line options to specify that Cleanmgr cleans up Temp files, Internet files, downloaded files, and Recycle Bin files. You can then schedule the task to run at a specific time by using the Scheduled Tasks tool.

Syntax

cleanmgr [/d <driveletter>] [/sageset:n]  [/sagerun:n] [/TUNEUP:n] [/LOWDISK] [/VERYLOWDISK]

Parameters

Parameter Description
/d <driveletter> Specifies the drive that you want Disk Cleanup to clean.<p>NOTE: The /d option is not utilized with /sagerun:n.
/sageset:n Displays the Disk Cleanup Settings dialog box and also creates a registry key to store the settings that you select. The n value, which is stored in the registry, allows you to specify tasks for Disk Cleanup to run. The n value can be any integer value from 0 to 9999.
/sagerun:n Runs the specified tasks that are assigned to the n value if you use the /sageset option. All drives on the computer are enumerated and the selected profile runs against each drive.
/tuneup:n Run /sageset and /sagerun for the same n .
/lowdisk Run with the default settings.
/verylowdisk Run with the default settings, no user prompts.
/? Displays help at the command prompt.
Options

The options for the files that you can specify for Disk Cleanup by using /sageset and /sagerun include:

  • Temporary Setup Files - These are files that were created by a Setup program that is no longer running.

  • Downloaded Program Files - Downloaded program files are ActiveX controls and Java programs that are downloaded automatically from the Internet when you view certain pages. These files are temporarily stored in the Downloaded Program Files folder on the hard disk. This option includes a View Files button so that you can see the files before Disk Cleanup removes them. The button opens the C:\Winnt\Downloaded Program Files folder.

  • Temporary Internet Files - The Temporary Internet Files folder contains Web pages that are stored on your hard disk for quick viewing. Disk Cleanup removes these page but leaves your personalized settings for Web pages intact. This option also includes a View Files button, which opens the C:\Documents and Settings\Username\Local Settings\Temporary Internet Files\Content.IE5 folder.

  • Old Chkdsk Files - When Chkdsk checks a disk for errors, Chkdsk might save lost file fragments as files in the root folder on the disk. These files are unnecessary.

  • Recycle Bin - The Recycle Bin contains files that you have deleted from the computer. These files are not permanently removed until you empty the Recycle Bin. This option includes a View Files button that opens the Recycle Bin.<p>Note: A Recycle Bin may appear in more than one drive, for example, not just in %SystemRoot%.

  • Temporary Files - Programs sometimes store temporary information in a Temp folder. Before a program quits, the program usually deletes this information. You can safely delete temporary files that have not been modified within the last week.

  • Temporary Offline Files - Temporary offline files are local copies of recently used network files. These files are automatically cached so that you can use them after you disconnect from the network. A View Files button opens the Offline Files folder.

  • Offline Files - Offline files are local copies of network files that you specifically want to have available offline so that you can use them after you disconnect from the network. A View Files button opens the Offline Files folder.

  • Compress Old Files - Windows can compress files that you have not used recently. Compressing files saves disk space, but you can still use the files. No files are deleted. Because files are compressed at different rates, the displayed amount of disk space that you will gain is approximate. An Options button permits you to specify the number of days to wait before Disk Cleanup compresses an unused file.

  • Catalog Files for the Content Indexer - The Indexing service speeds up and improves file searches by maintaining an index of the files that are on the disk. These Catalog files remain from a previous indexing operation and can be deleted safely.<p>Note: Catalog File may appear in more than one drive, for example, not just in %SystemRoot%.

[!NOTE] If you specify cleaning up the drive that contains the Windows installation, all of these options are available on the Disk Cleanup tab. If you specify any other drive, only the Recycle Bin and the Catalog files for content index options are available on the Disk Cleanup tab.

Examples

To run the Disk Cleanup app so that you can use its dialog box to specify options for use later, saving the settings to the set 1, type the following:

cleanmgr /sageset:1

To run Disk Cleanup and include the options that you specified with the cleanmgr /sageset:1 command, type:

cleanmgr /sagerun:1

To run cleanmgr /sageset:1 and cleanmgr /sagerun:1 together, type:

cleanmgr /tuneup:1

Additional References

MIT License. Copyright (c) 2020-2021 Strontic.