Symantec Endpoint Protection Scan Always Hangs at this directory

C:\Program Files\InstallShield Installation Information\{8833FFB6-5B0C-4764-81AA-06DFEED9A476}]

Hey guys, really needing help here as my pc is infected with trojans and it's in quarantine .

Btw i acted on my own and deleted them is it right or wrong to do that ,Thankfully i still have like 7 of them in quarantine and the weird thing is norton did not have  a description for it.????? Thanks in advance for the replys.