B7ef81a9.bin Access

The second half of the mystery is the extension: .

Based on user reports on malware forums (e.g., BleepingComputer, Malwarebytes), b7ef81a9.bin is most likely: b7ef81a9.bin

While possible, it is unlikely. False positives usually occur with legitimate software installers. A file with a random 8-character hex name has no legitimate purpose on a typical home PC. The second half of the mystery is the extension: