As many of you already know, files that do NOT contain digital signatures are usually suspected pieces of malware. To check your Windows system files for files that are not signed you can run sigverif.exe 
- Click the windows globe in the bottom left.
- In the search programs and files type “sigverif”.
- Click Start. Sigverif will quickly scan your system files for unsigned files.
- A window will open showing you which system files are not digitally signed. Also, I log was created. You can access the log by opening sigverif.exe, clicking advanced and then clicking view log.
- There are some files that are LEGITIMATE and have NO digital signature. You can verify if a file that does not contain a digital signature is malware by uploading it to virustotal.com (which scans the file against dozens of av engines)
…just another tip for your anti-malware tookit. 
{ 9 comments… read them below or add one }
that’s great! we can check any file now))
Matt, did you forget about those reviews?
@Thermalcake – nah, it’s just that the rogue antivirus infections in St. Louis have EXPLODED!!!$$$ I’ve been working day and night…constantly…
I’ll be taking off all next week for thanksgiving so hopefully I upload them then.
and wow It works on Windows XP SP2 and SP3 I only have 3 Unsigned file Thank for telling me this
How long are you going to be gone for next week?
@John
Yeah! This also works on Windows XP!
Matt is the Man!!!
Matt, out of your toolkit, what is the first tool that you are typically using now? Are you still making a 1st attack with hitman pro with the multi-engine approach? Bryan
Hey, Matt. Could you please review the newest version of AVG Free?