[SID: 30033] System Infected: Downloader.Dromedan Activity 21 attack blocked. Traffic has been blocked for this application: C:\WINDOWS\SYSTEM32\REGSVR32.EXE

Hello All,

I keep getting the below given notification from Symantec Endpoint on different SEP clients:

[SID: 30033] System Infected: Downloader.Dromedan Activity 21 attack blocked. Traffic has been blocked for this application: C:\WINDOWS\SYSTEM32\REGSVR32.EXE

[SID: 28173] Web Attack : Malvertisement Website Redirect 21 attack blocked. Traffic has been blocked for this application: C:\USERS\INSRATHORE\APPDATA\LOCAL\GOOGLE\CHROME\APPLICATION\CHROME.EXE
[SID: 30033] System Infected: Downloader.Dromedan Activity 21 attack blocked. Traffic has been blocked for this application: C:\WINDOWS\SYSTEM32\REGSVR32.EXE

Can anyone suggest me with the solution and how to resolve it ? 

What could be the possible reason for the same ?