GetOpenMonster is an aggressive browser hijacker and potentially unwanted program (PUP) that forcibly redirects web searches through suspicious intermediary domains. First documented in late 2019, this intrusive software modifies browser settings without proper user consent, typically bundled with freeware installers or disguised as legitimate software updates. Users commonly discover the infection when their homepage, new tab page, or default search engine suddenly points to unfamiliar domains that redirect through a chain of advertising networks before delivering search results—often from reputable engines, but only after tracking user behavior and injecting additional advertisements.
While GetOpenMonster doesn't qualify as a virus in the traditional sense, it exhibits behavior that significantly compromises user privacy and system integrity. The hijacker establishes multiple persistence mechanisms that make removal challenging for average users, including browser extension components, scheduled tasks, and registry modifications. Beyond the obvious annoyance of constant redirects, the threat poses privacy risks through extensive data collection on browsing habits, search queries, and potentially sensitive information entered into web forms.
Threat Profile
| Attribute | Details |
|---|---|
| Threat Family | Browser Hijacker / PUP (Potentially Unwanted Program) |
| Known Aliases | GetOpenMonster.com, Get Open Monster Search, OpenMonster Redirect |
| Affected Platforms | Windows 7/8/10/11; primarily targets Chrome, Firefox, Edge |
| First Documented | Late 2019 (variants continue to evolve) |
| Distribution Method | Software bundling, fake updates, deceptive ads, pay-per-install networks |
| Persistence Mechanisms | Browser extensions, scheduled tasks, registry Run keys, shortcut target modification |
| Primary Capabilities | Search redirection, homepage hijacking, new tab replacement, ad injection, tracking cookie deployment |
| Data Collection | Search queries, browsing history, clicked links, IP address, system information, form data (varies by variant) |
| Network Behavior | Redirects through multiple domains (getopenmonster.com and associated redirect chains), communicates with ad networks, may download additional PUPs |
| Typical File Locations | %LOCALAPPDATA%\[Random]\, %APPDATA%\[Variant Name]\, browser profile directories |
| Registry Impact | Modifications to HKCU and HKLM Run keys, browser policy keys, proxy settings |
| Removal Difficulty | Moderate to High (multiple persistence layers, reinfection common if incomplete removal) |
How It Spreads
GetOpenMonster rarely arrives on systems through direct user choice. Instead, it employs deceptive distribution tactics that exploit user inattention during software installation processes. The most common infection vector involves software bundling, where the hijacker is packaged alongside legitimate-seeming freeware downloaded from third-party hosting sites. During installation, the bundled PUP is presented in pre-checked optional offers, often using confusing language or hidden within "Custom" or "Advanced" installation options that most users skip.
Fake software update notifications represent another significant distribution channel. Users encounter convincing pop-ups claiming that Adobe Flash Player, Java, their browser, or video codecs require updates. Clicking these prompts downloads an installer that contains GetOpenMonster alongside (or instead of) any legitimate software. These fake update campaigns frequently appear on streaming sites, file-sharing platforms, and compromised legitimate websites that have been injected with malicious advertising scripts.
The hijacker also propagates through malvertising campaigns on both legitimate and questionable websites. Clicking certain advertisements—even accidentally—can trigger drive-by downloads or redirect users to landing pages hosting bundled installers. Pay-per-install (PPI) networks incentivize distributors to push GetOpenMonster installations, creating an ecosystem where affiliate marketers actively work to deceive users into installing the software.
- Bundled freeware installers from download sites like Softonic, Download.com (when downloading third-party software), or torrent platforms
- Fake update prompts for Flash Player, media codecs, browser updates, or system utilities
- Malicious advertisements on both legitimate and disreputable websites (malvertising)
- Compromised browser extensions that claim to offer useful features but contain hijacker code
- Email attachments and links in phishing campaigns disguised as software recommendations
- Peer-to-peer file sharing networks where cracked software contains bundled PUPs
- Misleading download buttons on file hosting sites that advertise rather than deliver the intended file
What It Does On Your Machine
Once installed, GetOpenMonster immediately targets browser configurations across all detected browsers. The hijacker modifies the homepage setting, default search engine, and new tab page to redirect through getopenmonster.com or associated domains. These redirects don't lead directly to search results; instead, they route through a chain of intermediary domains that serve multiple purposes for the threat operators: tracking user searches, injecting additional advertisements, and generating pay-per-click revenue before eventually delivering search results from legitimate engines like Google or Bing.
The modifications extend beyond visible browser settings. GetOpenMonster often installs browser extensions or helper objects that maintain control even if users attempt to manually revert their settings. These extensions lack proper names in browser management interfaces, appearing as cryptic identifiers or hiding in the background without toolbar icons. They actively monitor user actions, resetting hijacked settings whenever manual changes are detected. Some variants modify browser shortcut files, appending command-line parameters that force the browser to load the hijacker's pages on startup, regardless of configured settings.
Data collection forms a core component of the hijacker's operation. GetOpenMonster deploys tracking cookies and may install additional monitoring components that record browsing activity. While the privacy policy (if one exists) may claim anonymous data collection, the granularity of information gathered—including search queries, clicked links, time spent on pages, and potentially form inputs—creates a detailed profile of user behavior. This data serves immediate advertising purposes and may be sold to data brokers or advertising networks, where it becomes incorporated into larger tracking ecosystems.
System performance typically degrades following infection. The constant redirects and communication with advertising networks increase bandwidth consumption. Browsers load pages more slowly as requests are routed through multiple intermediary servers. The hijacker's background processes consume system resources, and the injection of additional advertisements—including pop-unders, interstitial ads, and in-text advertising links—further slows browsing. Users may also notice increased CPU usage and occasional browser freezes or crashes caused by poorly coded hijacker components.
Manual Removal — Step by Step
Disconnect and Document
Disconnect your computer from the internet (unplug Ethernet or disable WiFi) to prevent the hijacker from downloading additional components or transmitting collected data during removal. Take screenshots of the hijacked browser settings and note any unfamiliar programs in the system tray—you'll reference these later to confirm complete removal.
Boot Into Safe Mode with Networking
Restart your computer and enter 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 or F5 for Safe Mode with Networking. This prevents GetOpenMonster's autostart mechanisms from launching while still allowing you to download security tools if needed.
Uninstall Suspicious Programs
Open Settings > Apps > Apps & features (or Control Panel > Programs and Features on older Windows). Sort by install date and look for unfamiliar programs installed around the time you first noticed the hijacking. Uninstall anything suspicious, particularly programs with names containing "Open," "Monster," "Search," or random characters, as well as any bundled toolbars or utilities you don't recognize.
Remove Browser Extensions
Open each installed browser and access the extensions/add-ons manager (chrome://extensions/ for Chrome, about:addons for Firefox, edge://extensions/ for Edge). Remove any extensions you didn't intentionally install, especially those without clear names or from unknown publishers. Don't skip this step—GetOpenMonster often reinstalls itself through persistent extensions even if other components are removed.
Clean Registry and Scheduled Tasks
Press Win+R, type "taskschd.msc" and examine scheduled tasks for anything unfamiliar, particularly tasks that run on logon or at frequent intervals with vague names. Delete suspicious tasks. Then press Win+R, type "regedit" and navigate to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run and HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run—remove any entries pointing to unfamiliar executables in AppData or Temp folders.
Delete Hijacker Files
Open File Explorer and navigate to %LOCALAPPDATA% and %APPDATA% (type these in the address bar). Look for folders with random names, GUID-like strings, or containing "open" or "monster" in the name. Delete these folders entirely. Check the Temp folder (%TEMP%) as well and delete everything possible—some hijacker installers leave remnants here.
Reset Browser Settings
In each browser, access settings and perform a complete reset. In Chrome: Settings > Reset and clean up > Restore settings to original defaults. In Firefox: about:support > Refresh Firefox. In Edge: Settings > Reset settings > Restore settings to default values. This removes hijacked settings, but note that it also removes other customizations and may sign you out of websites.
Fix Browser Shortcuts
Right-click each browser shortcut (on desktop, taskbar, and Start menu), select Properties, and examine the Target field. It should point only to the browser executable with no additional URLs or parameters. Remove anything after the .exe if present. Do this for all browser shortcuts—GetOpenMonster commonly modifies these to force loading hijacked pages.
Run Security Scanners
Reconnect to the internet and download Malwarebytes (free version is sufficient) and run a full system scan. Follow up with a scan using AdwCleaner (also from Malwarebytes) which specializes in PUPs and browser hijackers. These tools often catch components and registry entries that manual removal misses, particularly monitoring processes and deeply embedded tracking cookies.
Change Passwords and Monitor
After confirming the hijacker is removed, change passwords for sensitive accounts—particularly banking, email, and social media—from a verified-clean device if possible, or at minimum using a freshly-reset browser. Monitor your accounts for unusual activity over the following weeks, as data collected during the infection period may have been transmitted to third parties.
Prevention
- Always choose Custom/Advanced installation when installing any free software, and carefully read each screen to uncheck bundled offers. The "Express" or "Recommended" installation almost always includes PUPs.
- Download software only from official sources—the developer's own website or verified app stores. Third-party download sites (even well-known ones) frequently bundle installers with PUPs to monetize free hosting.
- Keep Flash Player dead and buried. Adobe discontinued Flash in December 2020. Any prompt to update or install Flash Player is definitively a scam attempting to install malware or PUPs.
- Use an ad-blocker like uBlock Origin to prevent exposure to malvertising on legitimate sites. While not foolproof, ad-blockers significantly reduce the attack surface by blocking many malicious ad networks.
- Maintain updated security software with real-time protection enabled. Windows Defender (built into Windows 10/11) provides adequate baseline protection if kept updated, though third-party solutions may offer enhanced PUP detection.
- Enable browser security features including warnings for potentially harmful downloads and block third-party cookies. Check your browser's privacy and security settings and configure them more restrictively than defaults.
- Be skeptical of everything. If a website prompts you to install something to view content, close the page. If software installation seems to progress faster or differently than expected, cancel it. When in doubt, don't click.
- Create a non-admin user account for daily use. Many PUP installers require administrator privileges to establish system-wide persistence. Using a standard account forces a User Account Control prompt, giving you a chance to reconsider suspicious installations.
When Computer Repair Roswell removes malware from your system, we back our work with a 90-day warranty. If the same infection returns within 90 days through no fault of your own (not from reinfection via the same risky behavior), we'll clean it again at no additional charge. We don't just remove the visible symptoms—we track down every persistence mechanism to ensure the threat is truly eliminated.
Bring It In
Browser hijackers like GetOpenMonster create layers of persistence specifically designed to frustrate removal attempts. If you've followed the manual steps above and still see redirects, or if you're simply not comfortable editing the registry and hunting through system folders, bring your machine to our Roswell shop. We see these infections constantly, and we have specialized tools and techniques that go beyond what consumer antivirus software can accomplish. We'll thoroughly document what we find, explain what happened, and ensure your system is genuinely clean before you take it home.
Computer Repair Roswell is located at 1650 Hembree Road in Roswell, Georgia. We're open Monday through Friday, 9 AM to 6 PM, and Saturdays by appointment. Call us at (770) 674-6996 to check current wait times or schedule a drop-off. Most malware removals are completed within 24 hours, and we'll contact you with a diagnosis and cost estimate before proceeding with any work beyond the initial assessment. Don't let a browser hijacker compromise your privacy and waste your time—let's get your system back to normal.