Most antivirus programs identify ssttu.dll as malware.
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The process contains no information about the creator.
Description: Ssttu.dll is not essential for Windows and will often cause problems. The file ssttu.dll is located in the C:\Windows\System32 folder.
Known file sizes on Windows 10/8/7/XP are 268,288 bytes (25% of all occurrences), 290,816 bytes and 4 more variants.
This .dll file is a Browser Helper Object (BHO) that runs automatically every time you start your web browser. BHOs are not stopped by personal firewalls, because they are identified by the firewall as part of the browser itself. BHOs are often used by adware and spyware. IDs used by this BHO include 90BB979A-CEE1-4117-8147-6C3DA3FBBBE4 or D418BBC1-A20E-46EB-8681-A832B2346CF2 or 8 more variants. There is no description of the program. The program is not visible. The file is an unknown file in the Windows folder. Ssttu.dll is able to change the behavior of, or monitor Internet Explorer. The service has no detailed description. It is not a Windows core file. Therefore the technical security rating is 93% dangerous, however you should also read the user reviews.
Recommended: Identify ssttu.dll related errors
Important: You should check the ssttu.dll process on your PC to see if it is a threat. If ssttu.dll has changed your browser's search engine and start page, you can recover your browser's default settings as follows:Reset default browser settings for Internet-Explorer ▾
The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active ssttu process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the ssttu.dll on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.
A clean and tidy computer is the key requirement for avoiding PC trouble. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.
Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.