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The file HOSTSYS.EXE is malware related.
You must delete the file HOSTSYS.EXE immediately!
Delete the file HOSTSYS.EXE without delay!
Kill the process HOSTSYS.EXE and remove HOSTSYS.EXE from the Windows startup.
HOSTSYS.EXE Information and Removal:
MD5 of HOSTSYS.EXE = C917023FD5A5AF59B95956E82C758A1E
HOSTSYS.EXE size is 71288 bytes.
Full path on a computer: %APPDATA%\HOSTSYS.EXE
Related Files:
%APPDATA%\HOSTSYS.EXE
%TEMP%\FLAF6K0520.EXE