Free Trojan.Linkoptimizer Removal Tool — Step-by-Step Cleanup
Overview
Trojan.Linkoptimizer (aka Gromozon) is an aggressive adware/dialer family that uses stealth techniques (rootkit-like behavior, reserved filenames, EFS abuse) to persist and hide. A reputable free trojan removal tool plus careful manual steps usually removes it.
Quick checklist (run in this order)
- Disconnect from the Internet (stop further downloads/communication).
- Boot to Safe Mode with Networking (Windows) if normal mode blocks tools.
- Download and update reputable tools (install on a clean device if needed, transfer via USB):
- Malwarebytes Free (on-demand scanner)
- Microsoft Defender Offline / Windows Defender Offline scan
- A second-opinion scanner (AVG/Avast free or ESET Online Scanner)
- Full system scans with each tool; quarantine/remove all detections.
- Reboot to Safe Mode and repeat scans until clean.
- Check and remove persistence:
- Run Autoruns (Sysinternals) — disable/remove suspicious startup entries, services, BHOs.
- In Device Manager/Services.msc, disable unknown services.
- Inspect browser:
- Remove unknown extensions, reset browser settings, clear cache and cookies.
- Delete leftover files and reserved-name artifacts:
- Search for files matching patterns noted by vendors (random hex names, known Linkoptimizer filenames) and delete from Safe Mode.
- Empty quarantine/history folders if recommended by vendor guidance after confirmed clean.
- Run Microsoft Defender Offline scan (reboot) to catch rootkit-style components.
- Verify system integrity:
- sfc /scannow and DISM commands to repair system files.
- Change passwords (important if credentials were used while infected).
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