Avast EPP cant find the source of virus

Hello.

A random exe keeps generating everytime on our PC along with autorun.
avast EPP blocks it but cant find the source who generates it.

as i search on google. i did attrib -r -a -s -h . on every autorun.inf and disable autorun and autoplay on windows 7 & 10

autorun.inf contains this

[AutoRun] ;qqfMhDQp

;
sheLl\OPEN\cOMMand=jqhfyo.pif
;
oPen = jqhfyo.pif
;YNexsmDTsBjl kThhv dApbsvvQrL
sHeLl\oPEN\defAULt=1

;akhlWXQstkSUkXbWWrthimaxhm rLiy
shElL\ExpLoRE\coMManD= jqhfyo.pif
;
shEll\AuToPlaY\commaND= jqhfyo.pif

i did full scan and boot time scan many times but it keeps on coming back.

Any help please?

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