Home Malware Programs Potentially Unwanted Programs (PUPs) IST Cleaner Pro

IST Cleaner Pro

Posted: March 19, 2014

Threat Metric

Ranking: 13,379
Threat Level: 1/10
Infected PCs: 5,071
First Seen: March 24, 2014
Last Seen: October 14, 2023
OS(es) Affected: Windows

IST Cleaner Pro is a system optimizer, which is categorized as a potentially unwanted program (PUP). IST Cleaner Pro may be advertised and spread via other free software downloads, and once installed on the PC, it may state that various system issues have been detected on the computer. However, if the PC user tries to fix these system issues, IST Cleaner Pro may claim that the computer user needs to purchase its full version before being able to do this. IST Cleaner Pro may display annoying pop-up messages stating that numerous PC problems have been found on the computer system.

Technical Details

File System Modifications

Tutorials: If you wish to learn how to remove malware components manually, you can read the tutorials on how to find malware, kill unwanted processes, remove malicious DLLs and delete other harmful files. Always be sure to back up your PC before making any changes.

The following files were created in the system:



C:\Data Backup\Leroy 17621\Users\<username>\AppData\Roaming\UpdateServ\ISTCleaner.exe File name: ISTCleaner.exe
Size: 3.11 MB (3110696 bytes)
MD5: bc923de25a40c7c1edc7217898f8be28
Detection count: 642
File type: Executable File
Mime Type: unknown/exe
Path: C:\Data Backup\Leroy 17621\Users\<username>\AppData\Roaming\UpdateServ\ISTCleaner.exe
Group: Malware file
Last Updated: February 15, 2021
%APPDATA%\UpdateServ\IRegCleaner.exe File name: IRegCleaner.exe
Size: 3.16 MB (3169280 bytes)
MD5: 6004d43452cd1eb8fd51077573899a82
Detection count: 54
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\UpdateServ
Group: Malware file
Last Updated: March 30, 2016
%APPDATA%\UpdateServ\ISTCleaner.exe File name: ISTCleaner.exe
Size: 3.11 MB (3110696 bytes)
MD5: e8a08bcf3818ae6b513383bbf267723b
Detection count: 44
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\UpdateServ
Group: Malware file
Last Updated: April 30, 2014
%APPDATA%\UpdateServ\IRegCleaner.exe File name: IRegCleaner.exe
Size: 3.17 MB (3175720 bytes)
MD5: 1bd24abd33617715e0ed1bf6c9782238
Detection count: 26
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\UpdateServ
Group: Malware file
Last Updated: March 30, 2016

Registry Modifications

The following newly produced Registry Values are:

File name without pathISTCleaner.lnkHKEY..\..\..\..{RegistryKeys}Software\Wow6432Node\ISTCleanerHKEY_LOCAL_MACHINE\Software\[APPLICATION]\Microsoft\Windows\CurrentVersion\Uninstall..{Uninstaller}ISTCleaner

Additional Information

The following directories were created:
%AppData%\istcleaner%PROGRAMFILES%\ISTCleaner%PROGRAMFILES(x86)%\ISTCleaner
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