BaseFlash Virus

Also Known As: BaseFlash add-on
Type: Adware
Distribution: Low
Damage level: Moderate

BaseFlash virus removal instructions

What is Baseflash?

Created by a company named Baseflash LLC, the BaseFlash browser extension claims to enhance the Internet browsing experience by displaying website content and advertisements related to user interests. While this functionality may seem legitimate, computer users should be aware that BaseFlash is categorized as adware or a potentially unwanted application. Note that many reputable antivirus and anti-malware programs detect BaseFlash as a Trojan or malware. Internet users commonly install this browser extension inadvertently without their consent when downloading free software. Developers of this add-on employ a deceptive software marketing method called 'bundling'. This method is legal, however, many of the free software 'download clients' and 'installers' analyzed do not properly disclose additional applications listed for installation together with the free program chosen for download or installation.

Baseflash virus

After successful installation on browsers (Internet Explorer, Google Chrome, and Mozilla Firefox), BaseFlash generates intrusive banner, pop-up, pop-under and interstitial advertisements. Furthermore, this add-on tracks users' Internet browsing activity by recording IP addresses, Internet service providers allocated to the user's device, web address pages visited, antivirus programs installed, and other information, which can be personally identifiable. The presence of BaseFlash on your system may lead to malware infections (when clicking ads generated by this plugin), and since it tracks users' browsing activity, may also lead to privacy issues and identity theft. Research reveals that BaseFlash also records users' keystrokes - behavior similar to keyloggers, and therefore, you are advised to eliminate BaseFlash from your computer immediately.

BaseFlash is similar to other potentially unwanted programs, which install Internet browsers without users' consent. Examples include OkitSpace, SmartSaver+, Coupon Clipster, and Zapp. These plug-ins claim to enhance users' Internet browsing experience by adding various features, however, they only diminish browser performance and generate unwanted ads. To avoid installation of this adware, express caution when downloading and installing freeware. When downloading free programs, inspect each download step and opt-out of installation of advertised browser plug-ins by clicking the 'decline' button. When installing free software, choose the 'Custom' or 'Advanced' installation options, rather than 'Quick' or 'Typical' - this will reveal installation of any bundled adware. Users who have already installed BaseFlash and observe various unwanted advertisements (including 'Ads not by this site') when surfing the Internet, should use this removal guide to eliminate BaseFlash adware from their Internet browser/s.

BaseFlash generating intrusive online advertisements:

baseflash add-on generating intrusive online ads

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Quick menu:

BaseFlash virus removal:

At time of research, this adware did not install any programs with the facility to be uninstalled using Control Panel, however, the developer's website states that users who wish to uninstall the program should uninstall a program called "BASEFLASH".

Windows 7 users:

Accessing Programs and Features (uninstall) in Windows 7

Click Start (Windows Logo at the bottom left corner of your desktop), choose Control Panel. Locate Programs and click Uninstall a program.

Windows XP users:

Accessing Add or Remove Programs in Windows XP

Click Start, choose Settings and click Control Panel. Locate and click Add or Remove Programs.

Windows 10 and Windows 8 users:

Accessing Programs and Features (uninstall) in Windows 8

Right-click in the lower left corner of the screen, in the Quick Access Menu select Control Panel. In the opened window choose Programs and Features.

Mac OSX users:

Uninstall app in OSX (Mac)

Click Finder, in the opened screen select Applications. Drag the app from the Applications folder to the Trash (located in your Dock), then right click the Trash icon and select Empty Trash.

baseflash uninstall via Control Panel

In the uninstall programs window look for "BASEFLASH", select this entry and click "Uninstall" or "Remove".

Optional BaseFlash uninstall method:

1. Navigate to C:\Users\[YOUR USER NAME]\AppData\Roaming\baseflash

2. Double click on "uninstallkit.exe" - this will uninstall BaseFlash from your computer.

baseflash uninstall via appdata

After uninstalling BaseFlash, scan your computer for any remaining unwanted components or possible malware infections. To scan your computer, use recommended malware removal software.

Remove BaseFlash from Internet browsers:

Video showing how to remove potentially unwanted browser add-ons:

Internet Explorer logoRemove malicious add-ons from Internet Explorer:

Removing baseflash from Internet Explorer step 1

Click on the "gear" icon Internet Explorer options icon (at the top right corner of Internet Explorer) select "Manage Add-ons". Look for "BaseFlash Object", select this entry and click "Remove".

Removing baseflash from Internet Explorer step 2

Optional method:

If you continue to have problems with removal of the baseflash add-on, reset your Internet Explorer settings to default.

Windows XP users: Click Start, click Run, in the opened window type inetcpl.cpl In the opened window click the Advanced tab, then click Reset.

Resetting Internet Explorer settings to default on Windows XP

Windows Vista and Windows 7 users: Click the Windows logo, in the start search box type inetcpl.cpl and click enter. In the opened window click the Advanced tab, then click Reset.

Resetting Internet Explorer settings to default on Windows 7

Windows 8 users: Open Internet Explorer and click the gear icon. Select Internet Options.

Reseting Internet Explorer settings to default in Windows 8 - accessing

In the opened window, select the Advanced tab.

Resetting Internet Explorer settings to default on Windows 8 - Internet options advanced tab

Click the Reset button.

Resetting Internet Explorer settings to default on Windows 8 - click the Reset button in the Internet options advanced tab

Confirm that you wish to reset Internet Explorer settings to default by clicking the Reset button.

Resetting Internet Explorer settings to default on Windows 8 - confirm settings reset to default by clicking the reset button

Google Chrome logoRemove malicious extensions from Google Chrome:

Removing baseflash from Google Chrome step 1

Click the Chrome menu icon Google Chrome options icon (at the top right corner of Google Chrome) select "Tools" and click on "Extensions". Locate: "BaseFlash", select this entry and click the trash can icon.

Removing baseflash from Google Chrome step 2

Optional method:

If you continue to have problems with removal of the baseflash add-on, reset your Google Chrome browser settings. Click the Chrome menu icon Google Chrome menu icon (at the top right corner of Google Chrome) and select Settings. Scroll down to the bottom of the screen. Click the Advanced… link.

Google Chrome settings reset step 1

After scrolling to the bottom of the screen, click the Reset (Restore settings to their original defaults) button.

Google Chrome settings reset step 2

In the opened window, confirm that you wish to reset Google Chrome settings to default by clicking the Reset button.

Google Chrome settings reset step 3

Mozilla Firefox logoRemove malicious plugins from Mozilla Firefox:

Removing baseflash from Mozilla Firefox step 1

Click on the Firefox menu firefox menu icon (at the top right corner of the main window) select "Add-ons". Click on "Extensions", in the opened window remove "BaseFlash".

Removing baseflash from Mozilla Firefox step 2

Optional method:

Computer users who have problems with baseflash add-on removal can reset their Mozilla Firefox settings.

Open Mozilla Firefox, at the top right corner of the main window, click the Firefox menu, firefox menu icon in the opened menu, click Help.

Accessing settings (Reset Firefox to default settings step 1)

Select Troubleshooting Information.

Accessing Troubleshooting Information (Reset Firefox to default settings step 2)

In the opened window, click the Refresh Firefox button.

Clicking on Refresh Firefox button (Reset Firefox to default settings step 3)

In the opened window, confirm that you wish to reset Mozilla Firefox settings to default by clicking the Refresh Firefox button.

Confirm your want to reset Firefox settings to default (Reset Firefox to default settings step 4)

safari browser logoRemove malicious extensions from Safari:

removing adware from safari step 1 - accessing preferences

Make sure your Safari browser is active, click Safari menu, and select Preferences....

removing adware from safari step 2 - removing extensions

In the opened window click Extensions, locate any recently installed suspicious extension, select it and click Uninstall.

Optional method:

Make sure your Safari browser is active and click on Safari menu. From the drop down menu select Clear History and Website Data...

resetting safari step 1

In the opened window select all history and click the Clear History button.

resetting safari step 2

Microsoft Edge (Chromium) logoRemove malicious extensions from Microsoft Edge:

Removing adware from Microsoft Edge step 1

Click the Edge menu icon Microsoft Edge (chromium) menu icon (at the upper-right corner of Microsoft Edge), select "Extensions". Locate all recently-installed suspicious browser add-ons and click "Remove" below their names.

Removing adware from Microsoft Edge step 2

Optional method:

If you continue to have problems with removal of the baseflash add-on, reset your Microsoft Edge browser settings. Click the Edge menu icon Microsoft Edge (chromium) menu icon (at the top right corner of Microsoft Edge) and select Settings.

Microsoft Edge (Chromium) reset step 1

In the opened settings menu select Reset settings.

Microsoft Edge (Chromium) reset step 2

Select Restore settings to their default values. In the opened window, confirm that you wish to reset Microsoft Edge settings to default by clicking the Reset button.

Microsoft Edge (Chromium) reset step 3

  • If this did not help, follow these alternative instructions explaining how to reset the Microsoft Edge browser.

Summary:

declining installation of adware while downloading free software sampleCommonly, adware or potentially unwanted applications infiltrate Internet browsers through free software downloads. Note that the safest source for downloading free software is via developers' websites only. To avoid installation of adware, be very attentive when downloading and installing free software. When installing previously-downloaded free programs, choose the custom or advanced installation options – this step will reveal any potentially unwanted applications listed for installation together with your chosen free program.

Removal assistance:
If you are experiencing problems while trying to remove baseflash add-on from your computer, please ask for assistance in our malware support forum.

Post a comment:
If you have additional information on baseflash add-on or it's removal please share your knowledge in the comments section below.

toothsomeethyl

great guide!

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Software uninstall instructions
Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

QR Code
BaseFlash add-on QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of BaseFlash add-on on your mobile device.
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