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Savifier

Posted: December 1, 2014

Threat Metric

Threat Level: 2/10
Infected PCs: 133
First Seen: December 1, 2014
Last Seen: July 10, 2021
OS(es) Affected: Windows

Savifier is an adware program that offers price comparisons, coupons and other shopping-related advertisements. Although, thus far, Savifier's advertisements haven't included any threatening content, malware experts have identified multiple, recent Savifier installations that also may include other threats forcing exposure to Web content of a potentially threatening nature. Unless you installed Savifier intentionally, malware researchers would advise removing Savifier and other software that came with Savifier, assuming you have the dedicated PC security tools to do so.

A Little Extra Attack with Your Online Savings

Potentially Unwanted Programs like Savifier may claim to be able to save their users money, but, in reality, merely load extra in-browser advertisements. While Savifier's advertising functions, so far, have been limited to retailer-based content, recent Savifier campaigns have added legitimate security risks. Additional pop-ups served by Savifier or other PC threats installed along with Savifier forced their users to load survey-based phishing tactics, as well as fraudulent security updates. The latter often are a favorite method of distributing concealed threats.

Both Firefox and Chrome browsers have seen modifications by these recent Savifier-related attacks, which circulated most prominently in September of 2014. Other symptoms computer users sometimes identified during these attacks include looping audio advertisements and browser hijackings that redirect the affected browser to arbitrary domains, including ckntrk.com or trknck.com. In some incidents, malware experts saw these changes extend to the Steam gaming client's in-game browser, as well.

This last detail is unusual for browser-modifying PUPs, even adware like Savifier that otherwise may affect more than one brand of browser. Although malware experts occasionally observe attacks directed at Steam users, phishing attacks sent through instant messages and profile-based tactics are significantly more frequent than attempts to compromise the Steam browser.

Saving All Three Browsers from Savifier Pop-Ups

Prior to its including promotional efforts for suspicious websites, Savifier was a throw-away adware product of little note, save for its strong resemblance to other, just as valueless e-shopping software. While Savifier's classification as a Potentially Unwanted Program continues to be in place, its new-found ties to other threats than itself should be of concern to anyone who wants to protect their Web browsers. Avoid updates, recommended hotlines and other points of exposure to attackers through Savifier-related pop-ups. While anti-adware tools should suffice for deleting Savifier, malware experts also encourage scanning your PC with anti-malware software, following any contact with threatening websites.

The means by which these latest Savifier bundles distribute themselves are still under analysis, although Savifier's website doesn't appear to be the point of origin. Most reports imply the use of non-consensual installers, which could include bundles from free software sites, intentionally mislabeled installers or even attacks, all of which can be blocked by the proper security protocols.

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:



%TEMP%\nw3560_20590\4km6m9uttsm.exe File name: 4km6m9uttsm.exe
Size: 166.92 KB (166920 bytes)
MD5: 261d18cdd15d099046a4c23e47d4de5e
Detection count: 9
File type: Executable File
Mime Type: unknown/exe
Path: %TEMP%\nw3560_20590
Group: Malware file
Last Updated: January 5, 2021

Registry Modifications

The following newly produced Registry Values are:

HKEY_LOCAL_MACHINE\Software\[APPLICATION]\Microsoft\Windows\CurrentVersion\Uninstall..{Uninstaller}Savifier

Additional Information

The following directories were created:
%PROGRAMFILES%\Common Files\Diagnostics\node%PROGRAMFILES%\Common Files\Savifier%PROGRAMFILES(x86)%\Common Files\Diagnostics\node%PROGRAMFILES(x86)%\Common Files\Savifier
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