Steam .scr virus not detected, my account is gone

I was using steam client and i received a ping with a .scr link from a friend. thinking that at the max, it will be a screensaver, i opened it(I know i shouldnt have, was too curious). then i found steam logged out and asking username(found i got trapped). I immediately shutoff internet and deleted the .scr after closing its running processes. logged off windows and logged on back. Then i tried logging in to my account and it worked yesterday. Played games for 2-3 hours, no issues. But next day, steam is not auto logging into my account. when i give forgot password, i didnt receive mail to my verified email id. Also when i try to retrieve account , i get that my username and my mail id doesnt exist in database.
That is : my account details have been hijacked. Avast was running all the time, dint detect anything… no warnings.
I even remember avast doing some deep scan and said its OK when opening scr.

Similar problem is reported in
https://forum.avast.com/?topic=154908.0
but no responses.

My account is lost and I am waiting for steam support to help.
I dont have the .scr link it was present in steam chat and i cant login now .
I hope avast could help me in some way as this issue is persisting for Looong time (2 years) without any proper solution till now.

help with false postitives and virus is done in viruses and worms forum section

at top in that section is a how to get help guide … Logs to assist in cleaning malware

so should i repost this again there ?

I am not sure what help it is you want?

Your steam account issue is something steam support must help you with
If you want a malware check, then follow instructions in the guide and attach requested logs