what is .efw and how do i open it?

[loganginer]

I have tried renaming the file to .zip and .exe with no luck - it wants to open with something called "hips email attchement service" but nothing happens when i let it go.

any ideas?

[Blazkowicz]

CA Security Center Renamed ZIP or EXE or RAR File CA
Specific Notes
Use an editor to look at the first two characters in the file. If they are PK then the file is a renamed ZIP file; if MZ then the file is a renamed EXE file; if Rar! then the file is a renamed RAR file. Rename the file accordingly and then either use an archive utility like 7-Zip to open the file or run it as a program. Be VERY careful with these files as an anti-virus program has renamed them for some reason.