I will add to Joe's comment that I have never had a single problem with anything that Nirsoft (written by Nir Sofer) produces. All of it has worked as advertised without any "ulterior aspects" at all.
Same here, had an issue with a prior version being detected by ESET, Malwarebytes, Emsisoft Anti Malware, must have obtained it from another source.
Just downloaded from link above (zip file for portability), no red flags, showed both my Windows & MS Office keys.
Will be quarantining & deleting the other version(s) that were flagged & I've allowed to remain on drive. I also second Belarc Advisor, have been using this tool for years. Provides a lot of valuable data, to include installed software that's not accessed & can uninstall if desired. Also shows any USB devices plugged in, a security feature. This can allow one to see if any not owned by the user were plugged in behind our backs, possibly for malicious purposes. Belarc is a must have for most anyone with a computer, will notify of missing updates, although some may be false alarms (update doesn't apply to the OS when download & attempted install).
Just keep in mind that with OEM computers, the key shown cannot be used on another. Unless an upgrade feature COA that allows for transfer, after a reinstall (or old backup image restored), please read the EULA for details. Phone activation of these type of COA's may be needed if installed on another computer. When calling the activation center, just answer 'one' at first question, this prevents long delays & can reactivate in under 10 minutes. All that's required is the manual entry of digits in each group of blocks, one at a time. There's an option to repeat if can't type fast enough or to ensure what's entered is correct. If not mistaken, there's 7-8 blocks that requires 6-7 digits in each, this is what takes the most time. After that, one will then hit the activation tab, should be a success if all is legit.
If not, will be transferred to an agent, it's been since back in the pre-Windows 7 days since I've had to speak with one in regards to this matter.
Edited by cat1092, 25 March 2018 - 11:42 PM.