The following system changes may indicate the presence of HackTool:Win32/PasswordFox
The display of the following user interface:
HackTool:Win32/PasswordFox is a free tool that is used to display the user names and passwords stored in Firefox.
What to do now
To detect and remove this threat and other malicious software that may be installed on your computer, run a full-system scan with an appropriate, up-to-date, security solution. The following Microsoft products detect and remove this threat: