INSTALL.DLL

I got a pop-up from Comodo firewall asking me if i wanted to run INSTALL.DLL in the sand box.
I don’t really know what program is using INSTALL.DLL

Does anyone know if INSTALL.DLL is a legitimate process and what legitimate programs may be using it?

Thank you in advance for your help

It could be malware according to http://www.threatexpert.com/files/install.dll.html .

Start with scanning your system following What to do if you’re infected - eXPerience Rev.3 or submitting it to Virus Total for a verdict on its nature.

I have scanned the computer with three good antivirus/maleware programs a they found no problems

What OS are you on? May be it got started by rundll32.exe: https://forums.comodo.com/defense_help/rundll32dll_active_when_system_idle-t41620.0.html .

I am using XP Home SP3