Event Monitor by Super Tuneup Technologies LLP is a Tech Support Scam that tries to scare you into calling a remote tech support number so they can sell you unnecessary software and services. Event Monitor works by monitoring the Windows event logs for application crashes. When one is detected, it will display an alert that states that the computer may be at risk. If you are a victim of this program and bought services from these scammers, you should contact your credit card company and dispute the charges. To remove this trojan and other unwanted programs for free, you can use the removal guide below.
Source: https://www.bleepingcomputer.com/virus-removal/remove-event-monitor-tech-support-scam