Hi Team,
We have SEPM version 14. We have found symantec has detecting files "io.sys and msdos.sys" as WS.Reputation.1 same has been qurantined and deleted by SEPM. but still we are see those file in system but size is 0 kb.
Also we have observed those files(io.sys and msdos.sys) are created by process"ntvdm.exe". and this file belong to mircosoft and genuine process
Date | size | File |
03/14/2018 07:34 AM GMT | 0 | IO.SYS |
03/14/2018 07:34 AM GMT | 0 | MSDOS.SYS |
Symantec Logs:
Filename | Risk | Original Location | Computer | Current Location | Primary Action | Secondary Action | Action Description | Date and Time |
msdos.sys | WS.Reputation.1 | c:\ | D00070-0061 | Quarantine | Restart Required - Quarantine | Restart Required - Delete | Restart Required - The file was quarantined successfully. | 12/4/2018 10:19 |
io.sys | WS.Reputation.1 | c:\ | D00070-0061 | Quarantine | Restart Required - Quarantine | Restart Required - Delete | Restart Required - The file was quarantined successfully. | 12/4/2018 10:18 |
msdos.sys | WS.Reputation.1 | c:\ | D00070-0061 | Quarantine | Quarantine | Delete | Performed Post-Reboot Risk Processing. | 12/4/2018 9:54 |
msdos.sys | WS.Reputation.1 | c:\ | D00070-0061 | Quarantine | Quarantine | Delete | Performed Post-Reboot Risk Processing. | 12/4/2018 9:54 |
Hash value of files io.sys and msdos.sys : E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855
Files path: C:/ io.sys and C:/ msdos.sys
Please confirme what basis symantec has detecting those files io.sys and msdos.sys as WS.Reputation.1. and let us know the reason?