StartJoy is a browser hijacker and potentially unwanted program (PUP) that infiltrates Windows systems to manipulate web browser settings and redirect user searches through questionable search engines. Once installed, it typically changes your homepage, default search provider, and new tab page without explicit permission, forcing traffic through advertising networks that generate revenue for its operators. While not as destructive as ransomware or banking trojans, StartJoy degrades system performance, compromises your privacy by tracking browsing habits, and exposes you to potentially malicious advertisements and further unwanted software installations.
Browser hijackers like StartJoy occupy a gray area—they're technically not viruses in the traditional sense, but they exhibit malicious behavior by resisting removal and making unauthorized system changes. Most reputable antivirus programs now classify them as threats worth removing. The software typically bundles itself with legitimate-looking free applications and uses deceptive installation tactics to gain a foothold on your machine.
Threat Profile
| Attribute | Details |
|---|---|
| Threat Type | Browser Hijacker, Potentially Unwanted Program (PUP) |
| Family | Search redirect hijacker family |
| Affected Platforms | Windows 7, 8, 8.1, 10, 11; targets Chrome, Firefox, Edge primarily |
| Distribution Method | Software bundling, fake installers, deceptive download buttons on freeware sites |
| Primary Objectives | Search hijacking, ad injection, affiliate revenue generation, data collection |
| Persistence Mechanisms | Browser extension/add-on, registry modifications, scheduled tasks, startup entries |
| Notable Behaviors | Homepage replacement, search redirection, tracking cookie installation, browser settings lockdown |
| Data at Risk | Browsing history, search queries, IP addresses, potentially form data and login credentials |
| Network Activity | Frequent outbound connections to ad networks and tracking domains; domain patterns vary |
| Common Aliases | StartJoy redirect, StartJoy search, Start-Joy (detection names vary by antivirus vendor) |
| Typical File Locations | %LOCALAPPDATA%, %APPDATA%, browser extension directories |
| Removal Difficulty | Moderate—requires browser cleanup, registry editing, and persistent file removal |
How It Spreads
StartJoy spreads almost exclusively through software bundling—the practice of packaging unwanted programs alongside legitimate free software. When you download a free PDF converter, video player, or system utility from a third-party download site, the installer often includes optional (or not-so-optional) additional software. StartJoy exploits users who click through installation wizards using "Express" or "Recommended" settings rather than the "Custom" or "Advanced" options that would reveal the bundled hitchhikers.
Freeware download portals are the primary hunting ground for these bundlers. Sites that host popular free software often wrap legitimate programs in their own installer packages, adding monetization layers that include browser hijackers. In some cases, the additional software is pre-checked during installation, requiring active opt-out rather than opt-in. Users expecting to install one program end up with three or four unwanted additions, including StartJoy.
Distribution vectors include:
- Bundled freeware installers from third-party download sites (not official vendor sites)
- Fake download buttons on file-sharing and streaming websites that lead to PUP installers instead of the intended file
- Misleading software update notifications claiming you need to update Flash Player, Java, or media codecs
- Torrents and pirated software with modified installers that include unwanted programs
- Malicious advertising (malvertising) that initiates drive-by downloads or deceptive installation prompts
- Email attachments disguised as legitimate software or utilities (less common for browser hijackers but possible)
What It Does On Your Machine
Once StartJoy establishes itself, the most immediate symptom is browser hijacking. Your homepage suddenly changes to an unfamiliar search page, and every new tab opens to the same hijacked destination. When you attempt to search using your browser's address bar, queries get redirected through one or more intermediate domains before landing on a search results page filled with sponsored links and ads. These modified search results prioritize paid advertisements over genuine organic results, and the quality of information you receive drops dramatically.
Beyond the obvious redirects, StartJoy typically installs itself as a browser extension or add-on with deep permissions. This extension can read and modify data on all websites you visit, effectively allowing it to track your browsing behavior comprehensively. It monitors search queries, visited URLs, time spent on pages, clicked links, and potentially form inputs. This data gets transmitted to remote servers for profiling and ad targeting purposes. Some variants also inject additional advertisements directly into legitimate web pages you visit, disrupting content and slowing page loads.
The hijacker modifies browser settings and then actively prevents you from changing them back. If you manually reset your homepage or default search engine, StartJoy's background processes detect the change and immediately revert it. This resistance to removal is a defining characteristic that distinguishes browser hijackers from simple adware—they're designed to be sticky and persistent.
System performance often degrades noticeably because the hijacker constantly runs background processes to enforce its settings, communicate with remote servers, and inject content into your browsing sessions. You may notice increased CPU usage, slower browser responsiveness, and longer page load times. The constant network chatter also consumes bandwidth and potentially exposes your system to additional threats if the hijacker loads content from compromised advertising networks.
Manual Removal — Step by Step
Disconnect and Document
Disconnect from the internet (unplug Ethernet or disable WiFi) to prevent the hijacker from receiving updates or downloading additional components during removal. Take screenshots of your hijacked homepage and any unfamiliar extensions for reference. Note any unusual programs you've installed recently.
Boot Into Safe Mode with Networking
Restart your computer and boot into Safe Mode with Networking. On Windows 10/11: hold Shift while clicking Restart, then navigate to Troubleshoot → Advanced Options → Startup Settings → Restart, and press 5 for Safe Mode with Networking. This prevents StartJoy's processes from automatically launching and fighting your removal efforts.
Uninstall Suspicious Programs
Open Settings → Apps → Apps & features (or Control Panel → Programs and Features on older Windows). Sort by install date and look for StartJoy or any unfamiliar programs installed around the same time your browser problems began. Uninstall anything suspicious. Common bundled names include optimization tools, search assistants, or vaguely named utilities you don't remember installing.
Remove Browser Extensions
Open each browser you use and remove all suspicious extensions. In Chrome: Menu → Extensions → Manage Extensions, then remove anything unfamiliar. In Firefox: Menu → Add-ons and Themes → Extensions. In Edge: Menu → Extensions. Don't just disable them—click Remove. StartJoy often installs extensions with generic names like "Helper," "Assistant," or random letter combinations.
Reset Browser Settings
After removing extensions, reset each browser to defaults. Chrome: Settings → Reset settings → Restore settings to their original defaults. Firefox: Help → More Troubleshooting Information → Refresh Firefox. Edge: Settings → Reset settings → Restore settings to their default values. This clears hijacked search engines, homepages, and startup pages that extensions may have locked.
Clean Registry Entries
Press Win+R, type "regedit", and press Enter. Navigate to HKEY_CURRENT_USER\Software and HKEY_LOCAL_MACHINE\SOFTWARE (and SOFTWARE\WOW6432Node on 64-bit systems). Look for folders named "StartJoy" or matching the program names you uninstalled. Right-click and delete these keys. Also check HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run for StartJoy startup entries and remove them.
Delete Program Files
Open File Explorer and navigate to %LOCALAPPDATA%, %APPDATA%, and C:\Program Files (x86)\. Look for folders named StartJoy or matching the programs you uninstalled. Delete these folders entirely. You may need to use Task Manager (Ctrl+Shift+Esc) to end any running processes first if Windows says files are in use.
Check Scheduled Tasks
Open Task Scheduler (search for it in the Start menu). Expand Task Scheduler Library and look for tasks with names matching StartJoy or the suspicious programs. Right-click any you find and select Delete. Browser hijackers often use scheduled tasks to reinstall themselves or re-enable their extensions.
Run Anti-Malware Scans
Reconnect to the internet and download Malwarebytes (free version works fine) from the official site. Run a full Threat Scan to catch any remnants or additional PUPs that came bundled with StartJoy. Follow up with your regular antivirus full scan. Remove or quarantine everything detected.
Reboot and Verify
Restart your computer normally (not in Safe Mode). Open your browsers and verify that your chosen homepage and search engine remain set correctly. Test searching from the address bar to confirm queries aren't being redirected. Monitor system performance for a day—if redirects return or new extensions appear, you may have missed a persistence mechanism and should consider professional removal.
Prevention
- Download software only from official vendor websites. Avoid third-party download portals like Download.com, Softonic, or CNET Downloads that bundle installers with additional software. Go directly to the developer's site.
- Always choose Custom/Advanced installation. Never click through installers using Express or Recommended settings. Custom installation reveals bundled software and allows you to uncheck unwanted additions before they install.
- Read every installation screen carefully. Bundlers often hide consent for additional software in small text or pre-checked boxes buried in EULA agreements. Look for phrases like "I also want to install" or "Change my homepage to."
- Keep a reputable antivirus active with real-time protection. Modern antivirus software catches many PUPs during download or installation. Windows Defender is adequate for basic protection, but third-party solutions often offer better PUP detection.
- Use an ad blocker and script blocker. Browser extensions like uBlock Origin prevent malicious advertisements and deceptive download buttons that lead to unwanted software installers.
- Be extremely skeptical of browser notifications requesting permission. Never accept push notifications from unfamiliar websites. Deny permission unless you specifically want updates from a trusted site.
- Ignore fake update warnings. Legitimate software updates through the application itself or Windows Update—not through random browser pop-ups. If you see warnings about outdated Flash, Java, or codecs, close the browser and update through official channels if needed.
- Review installed programs monthly. Make it a habit to check your installed programs list and remove anything you don't recognize or use. PUPs can sneak in gradually, and early removal prevents deeper system integration.
Bring It In
Browser hijackers like StartJoy are frustrating precisely because they're designed to resist DIY removal. If you've followed the manual steps above and still experience redirects, if you're uncomfortable editing the registry, or if you simply want the peace of mind that comes with professional cleaning, bring your computer to our Roswell shop. We see dozens of hijacker infections every month and can typically clean them in under an hour while you wait or drop off your system for same-day service.
We're located in Roswell, Georgia, and we've been helping homeowners and local businesses with malware problems since before browser hijackers became the nuisance they are today. Call us at (770) 727-9052 or stop by during business hours. We'll explain exactly what we find, show you how it got there, and make sure you leave with not just a clean machine but also the knowledge to avoid reinfection. No appointment necessary for drop-offs, though calling ahead helps if you need while-you-wait service.