Allvalidesession.txt -

Stop the malware from uploading any further data.

Are you seeing this file on your or within a specific folder related to a download? AllValideSession.txt

It usually stores structured data including the website URL (often social media platforms like Facebook), the session cookie/token, and sometimes the account name. Stop the malware from uploading any further data

is a filename frequently associated with the output of malicious credential harvesting tools and "stealer" malware. It is not a standard system file or a legitimate log file used by reputable software. Origin and Purpose the session cookie/token