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FlashFree

Posted: April 9, 2015

Threat Metric

Threat Level: 8/10
Infected PCs: 80
First Seen: April 9, 2015
Last Seen: September 5, 2022
OS(es) Affected: Windows

FlashFree is a Chrome extension that claims to be a viable means of blocking unwanted Flash content, but also injects advertisements of its own into your browser. Although this swerve in intended purpose is insufficient for making FlashFree classifiable as a threat, FlashFree does merit being rated as a Potentially Unwanted Program that you should uninstall from your PC. Since malware experts have seen cases of incomplete FlashFree deletions that could cause additional issues, you should consider using proper anti-adware utilities to delete FlashFree for your browser's safety.

Free from Flash, but not from Advertisements

Flash, while a go-to means of delivering advanced graphical content, also is favored by some third parties for attacking vulnerable PCs. As a safety measure, some Web surfers prefer to block Flash by default, with some turning to the seemingly innocuous FlashFree extension. Up to early 2014, FlashFree acquired mostly positive reviews for that purpose, with no significant anomalies in functionality. However, in January 2014, FlashFree was updated with a notably extraneous feature: injecting extra advertisements into Chrome.

As an adware program, FlashFree prefers to use forcibly inserted advertising links bound to text content, which may be 'relevant' keywords for the advertising partner's services. FlashFree must be uninstalled to disable these advertisements, and since they may include pop-up Flash content, they work counter to the original, security-oriented purpose of this extension. Currently, malware analysts have yet to see any major attacks originating through advertisements promoted by FlashFree. However, adware advertising networks may distribute such PC threats as fraudulent patches, disguised PUP installers and, in the worst cases, even drive-by-downloads.

Freeing Your Browser from FlashFree Links

Like most non-threatening extensions, FlashFree can be installed from the Chrome store, for those willing to ignore its many, negative reviews. However, malware analysts also saw recent incidents involving FlashFree's distribution by other channels, most notably, attacks through online advertisements. These attacks installed a variety of other threats in addition to FlashFree, including at least one secondary adware program for Internet Explorer. At this time, the rest of the payload still is being determined, along with the exploit used to achieve the non-consensual installation of the above software.

Whether FlashFree comes to your browser by a legitimate store link or by illegitimate advertising content, its classification as a PUP makes FlashFree a potential source of future attacks against your PC. Removing FlashFree and other adware from your browser, especially with dedicated anti-adware tools, can prevent precisely the same kinds of attacks that now are used to distribute FlashFree to unwelcoming Web surfers. Sadly, FlashFree's history shows that even a formerly useful security product may silently update itself into an extension that serves the opposite of its theoretical purpose.

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