PUABundler:Win32/PiriformBundler is a detection of a cracked version of Piriform Software products. You may know this company by its selection of system cleaning and optimization utilities for Windows..
CCleaner was detected as PUABundler:Win32/PiriformBundler by Microsoft
Despite being a legitimate program, antivirus software often flags this program as PUABundler:Win32/PiriformBundler, considering it potentially unwanted. The reason is the usage of software bundling with these cracks. These bundles not just bring unwanted software but may also be used to inject malware.
PiriformBundler Overview
PUABundler:Win32/PiriformBundler is a classification used by Microsoft Defender Antivirus to identify a specific type of potentially unwanted application (PUA) bundled with software from Piriform. Piriform is known for developing popular utility software like CCleaner. Such a promotion strategy for the program was adopted long before it was considered illegal. Nowadays, the company stopped using it, but you can find plenty of Piriform software cracks spread as a bundle.
Piriform Bundler is blocked not only because of this global ban on bundlers. Users also complain that free CCleaner, usually used as a “main” program in that bundle, performs many background operations. And background activity is not bad until it goes against privacy and users’ will. However, the CCleaner gets updated automatically without any notifications and even without being launched in any way. Moreover, users detected the telemetric functionality during this silent mode. Hence, CCleaner is an unwanted app for users who pay much attention to privacy. Piriform Bundler became banned just because it spread this unwanted program.
| Name | PiriformBundler |
| Detection | PUABundler:Win32/PiriformBundler |
| Damage | In addition to the main program to be installed, it can install additional software without the user’s knowledge and consent. |
| Similar Behavitor | PUA:Win32/Puwaders.C!ml, PUA:Win32/Adsunwan |
| Details | Piriform Bundler is a specific bundling tool that is used by “Piriform Corp ” to distribute its program products. |
Malicious activities done by PiriformBundler
Activities make PiriformBundler a potentially unwanted application (PUA) and justify its classification as risky by antivirus software. Users are advised to be cautious when encountering software bundled with such behavior.
- Displaying pop-up ads and banners.
- Redirecting search results.
- Modifying browser settings.
- Collecting personal information.
Piriform Bundler Removal Guide
While it is technically possible to attempt manual removal of the threat, I strongly advise against it. In its endeavor to gain persistence, Malware generates numerous instances of itself, making it nearly impossible to trace all of its components. Consequently, manual removal efforts can be time-consuming and often yield little to no efficiency. Below, I have compiled a guide that outlines the most effective removal practices for Piriform Bundler.
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