Filenames with random character strings like "2KSTRHH" are often generated by encryption malware (ransomware) to serve as instructions for the victim on how to pay a ransom. If you found this on your computer without downloading it, your system may be compromised.
by enabling "File name extensions" in your File Explorer settings to ensure it isn't a hidden executable. Download 2KSTRHH txt
Since this specific filename does not have a public reputation, a review of the "download" would typically focus on its rather than its content. Review: Safety Assessment of "2KSTRHH.txt" Filenames with random character strings like "2KSTRHH" are
if you did not explicitly create it or expect it from a verified source. Download 2KSTRHH txt
using a reputable tool like Malwarebytes or Avast if the file appeared on your system unexpectedly.