Kompoz2.com is a browser hijacker that forcibly redirects users to unwanted websites and manipulates search engine results to generate advertising revenue. This potentially unwanted program (PUP) typically arrives bundled with free software downloads and immediately modifies browser settings without explicit user consent. While not technically a virus, Kompoz2.com exhibits aggressive behavior that disrupts normal browsing, exposes users to potentially malicious advertising networks, and collects browsing data for marketing purposes.
The hijacker primarily targets Google Chrome, Mozilla Firefox, and Microsoft Edge browsers on Windows systems, though variants have been observed affecting other platforms. Once installed, it proves remarkably persistent, often reinstalling itself even after users manually revert their homepage and search engine settings. The combination of browser manipulation, data collection, and exposure to untrusted advertising networks makes removal a priority for infected systems.
Threat Profile
| Attribute | Details |
|---|---|
| Threat Type | Browser Hijacker / Potentially Unwanted Program (PUP) |
| Malware Family | Search redirect hijacker family (behavior consistent with SearchAwesome and similar hijackers) |
| Aliases | Kompoz2, Kompoz2.com redirect, SearchKompoz2 |
| Primary Platform | Windows 7/8/10/11; primarily affects Chromium-based browsers and Firefox |
| Distribution Method | Software bundling, deceptive installers, fake update prompts, misleading advertisements |
| Persistence Mechanism | Browser extension installation, scheduled tasks, registry Run keys, policy modifications |
| Primary Capabilities | Homepage/new tab hijacking, search redirection, sponsored result injection, browsing data collection |
| Data Collection | Search queries, browsing history, clicked links, IP address, geolocation, system information |
| Network Behavior | Redirects through multiple intermediary domains before landing page; contacts ad-serving networks; transmits tracking data via HTTP/HTTPS |
| Common Artifacts | Browser extensions with random names, scheduled tasks named similar to legitimate Windows services, modified browser shortcuts with appended URLs |
| Associated Domains | kompoz2.com and rotating subdomains; redirects often pass through tracker domains before final destination |
| Removal Difficulty | Moderate — reinstalls itself if all components not removed; uses multiple persistence techniques |
How It Spreads
Kompoz2.com employs deceptive distribution tactics that exploit user inattention during software installation. The most common infection vector involves software bundling, where the hijacker piggybacks on legitimate free software downloads. Users who click through installation wizards using "Express" or "Recommended" settings inadvertently agree to install additional programs that weren't clearly disclosed. The bundling process often uses confusing language and pre-checked boxes that make it appear the hijacker installation is part of the primary software package.
Beyond bundled installers, the hijacker spreads through fake update notifications that mimic legitimate browser or Flash Player update prompts. These deceptive windows appear on compromised websites or are triggered by existing adware infections. Clicking "Update Now" downloads an installer that delivers Kompoz2.com instead of the promised update. The hijacker also propagates through malicious advertising campaigns that use social engineering — fake prize notifications, security warnings about nonexistent infections, or prompts to download video codecs to play content.
Common distribution vectors include:
- Bundled free software — Download managers, PDF converters, media players, and system utilities from third-party download sites
- Fake browser updates — Pop-ups claiming your browser is outdated and offering an "update" that's actually the hijacker installer
- Deceptive advertisements — Malvertising campaigns on legitimate sites or ads on piracy/streaming platforms
- Compromised installers — Repackaged versions of legitimate software from unofficial mirrors and torrent sites
- Email attachments — Installers disguised as documents or utilities in spam campaigns (less common for this specific threat)
- Browser extension stores — Occasionally appears as a seemingly legitimate extension with a misleading description, though most are removed once reported
What It Does On Your Machine
Once installed, Kompoz2.com immediately modifies browser configurations to redirect web traffic through its servers. The hijacker changes your homepage, default search engine, and new tab page to kompoz2.com or related domains. When you perform searches, queries pass through the hijacker's servers before delivering results, allowing it to inject sponsored links, track search terms, and redirect users to advertising partners. The search results themselves often come from legitimate search engines like Bing or Yahoo, but they're filtered and manipulated to prioritize paid placements over relevant results.
The hijacker establishes multiple persistence mechanisms to survive removal attempts. It creates scheduled tasks that periodically check whether browser settings have been reverted and automatically reapplies the hijacked configurations if users try to change them manually. Browser shortcuts are modified with command-line parameters that force specific URLs to load on startup. The hijacker may also install browser extensions with generic names or random character strings that continuously enforce the modified settings. Some variants modify Windows registry policies to prevent users from accessing browser settings pages or to automatically reinstall the extension if removed.
Beyond visible browser changes, Kompoz2.com operates a data collection operation in the background. The hijacker monitors browsing activity, recording search queries, visited URLs, time spent on pages, and clicked links. This information gets transmitted to remote servers where it's aggregated into marketing profiles. The collected data typically includes your IP address, general location (city/region level), browser version, operating system, installed plugins, and screen resolution — information that helps advertisers target specific demographics. While the hijacker doesn't typically steal passwords or financial information directly, its presence creates security risks by exposing your system to additional threats through untrusted advertising networks.
Manual Removal — Step by Step
Disconnect from the Network and Boot to Safe Mode
Disconnect your ethernet cable or disable Wi-Fi to prevent the hijacker from downloading additional components during removal. Restart your computer and press F8 (or Shift+F8 on newer systems) during boot to access Advanced Boot Options. Select "Safe Mode with Networking" to load Windows with minimal drivers and startup programs, which prevents most hijacker components from launching automatically while still allowing internet access for downloading removal tools if needed.
Uninstall Suspicious Programs via Control Panel
Open Control Panel → Programs and Features (or Add/Remove Programs on older systems). Sort the program list by "Installed On" date and look for unfamiliar entries installed around the time you first noticed the hijacker. Uninstall anything you don't recognize, especially programs with generic names, random character strings, or names containing "search," "tool," "optimizer," or similar terms. The Kompoz2 installer may appear under various publisher names or may not appear in the program list at all — don't worry if you can't find it here.
Remove Malicious Browser Extensions
Open each installed browser and access the extensions/add-ons page (chrome://extensions/ for Chrome, about:addons for Firefox, edge://extensions/ for Edge). Remove any extensions you didn't intentionally install, especially those with generic names, random IDs, or permissions to "read and change all your data on websites you visit." Note that the hijacker extension may hide itself by disabling the "Remove" button — if this happens, you'll need to delete it manually from the filesystem after identifying its installation folder from the extension details page.
Remove Persistence Mechanisms from Task Scheduler
Press Win+R, type "taskschd.msc" and press Enter to open Task Scheduler. Expand Task Scheduler Library and examine all tasks, especially those in the Microsoft\Windows folder. Look for tasks with suspicious names that run at frequent intervals (every few minutes or at logon). Check the Actions tab of each suspicious task — if it points to executables in %LOCALAPPDATA%, %TEMP%, or other user-writable locations with random names, delete the task. The hijacker often creates tasks that periodically reapply browser settings or reinstall removed components.
Clean Registry Run Keys and Policies
Press Win+R, type "regedit" and press Enter to open Registry Editor. Navigate to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run and HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run. Delete any entries pointing to random executables in user folders. Next, check HKEY_CURRENT_USER\Software\Policies\Google\Chrome\ and \Mozilla\Firefox\ for forced extension installation policies — delete any ExtensionInstallForcelist or similar keys. Also check HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main and reset the "Start Page" value to your preferred homepage or blank.
Delete Hijacker File Directories
Open File Explorer and navigate to %LOCALAPPDATA% (paste this in the address bar). Look for folders with random names or suspicious publisher names created around the infection date. Delete these entire folders. Repeat for %APPDATA% and %PROGRAMFILES(X86)%. Also check your browser's user data folder (like %LOCALAPPDATA%\Google\Chrome\User Data\Default\Extensions) and manually delete any extension folders that correspond to the hijacker extension you identified earlier. Empty your Recycle Bin when finished.
Reset Browser Shortcuts
Right-click your browser shortcuts (on desktop, taskbar, and Start Menu) and select Properties. In the Shortcut tab, check the Target field — it should point only to the browser executable with no URLs appended after the .exe path. If you see URLs like "chrome.exe http://kompoz2.com", delete everything after the closing quotation mark following chrome.exe. Apply the changes and repeat for all browser shortcuts on your system.
Run Malwarebytes and Additional Scanners
Download Malwarebytes Free (from malwarebytes.com) and run a full Threat Scan. This will catch components you may have missed and remove any associated adware or PUPs that were bundled with the hijacker. After Malwarebytes completes, run a scan with AdwCleaner (also from Malwarebytes) which specifically targets browser hijackers and resets browser settings. Quarantine or delete all detected items. Consider following up with a full Windows Defender scan as well for comprehensive coverage.
Manually Reset Browser Settings
Even after removing the hijacker, some settings may remain altered. In Chrome, go to Settings → Reset and clean up → Restore settings to their original defaults. In Firefox, type about:support in the address bar and click "Refresh Firefox." In Edge, go to Settings → Reset settings → Restore settings to their default values. This clears out any lingering modifications to search engines, homepages, and startup pages while preserving your bookmarks and passwords.
Reboot, Reconnect, and Verify Removal
Restart your computer normally (not in Safe Mode) and reconnect to your network. Open your browsers and verify that your chosen homepage loads instead of Kompoz2.com, perform a test search to confirm it uses your preferred search engine, and open a new tab to ensure it's not hijacked. Check Task Manager (Ctrl+Shift+Esc) for any suspicious processes consuming resources. If Kompoz2 returns after reboot, you've missed a persistence mechanism — review the scheduled tasks and registry Run keys again, or proceed to professional removal.
Prevention
- Always use Custom/Advanced installation options when installing free software. Read each screen carefully and uncheck any offers for additional programs, browser toolbars, or homepage changes. Decline anything that isn't the primary software you intended to install.
- Download software only from official sources — the developer's own website or verified stores like the Microsoft Store. Avoid third-party download sites like Softonic, Download.com, or CNET Downloads, which frequently bundle PUPs with legitimate installers.
- Keep your browser and operating system updated through official update mechanisms only. Never click "update now" prompts that appear while browsing — close them and manually check for updates through your browser's settings menu or Windows Update.
- Install a reputable ad blocker like uBlock Origin to reduce exposure to malicious advertisements and deceptive pop-ups. This prevents many hijacker distribution methods from ever reaching your screen.
- Enable Windows Defender's Real-time Protection and keep it updated. While it won't catch every PUP, it blocks many known hijacker installers before they execute. Consider supplementing with periodic Malwarebytes scans.
- Review installed browser extensions monthly. Remove anything you don't actively use or don't remember installing. Hijackers often slip in as extensions and remain dormant before activating.
- Be skeptical of urgent warnings and prompts that claim your system is infected, your browser is outdated, or you need to download something to view content. Legitimate security warnings come from your installed antivirus software, not from websites.
- Create a standard user account for daily use instead of using an administrator account. This limits the system-wide changes that hijackers can make without prompting for elevation, giving you a warning before installation.
Bring It In
Browser hijackers like Kompoz2.com can be stubborn, and missed components often lead to reinfection within hours of manual removal attempts. If you've followed the steps above and the hijacker returns, or if you're not comfortable editing the registry and system settings yourself, bring your computer to Computer Repair Roswell. We've removed hundreds of browser hijackers from local customers' systems, and we understand the persistence techniques these programs use to survive removal attempts. Our technicians will clean your system completely, verify that all components are gone, optimize your browsers for performance, and provide specific recommendations based on your usage patterns to prevent reinfection.
We're located right here in Roswell, Georgia, and we offer same-day service for most malware removals — often while you wait. Call us at (770) 695-6000 to describe what you're experiencing, or stop by our shop with your computer. We'll give you an honest assessment of what's needed, explain the removal process, and have you back online safely. Unlike remote support services that may miss filesystem artifacts or reinstall the same removal tools you've already tried, our hands-on approach ensures every trace of the hijacker is eliminated before you take your computer home.