[Windows] Find viruses, malware, rootkits, and do troubleshooting with ESET SysInspector, a free portable tool

2013-09-21_082132Ever use your computer only to find it behaving a bit odd? Maybe it is running slower than normal, some programs aren’t opening, your screen is screwing up, etc. It can often be difficult to find out why your computer is acting up. That is why computer diagnostic tools were created. ESET SysInspector is one such diagnostic tool. Let’s see if it is worth your time.

What Is It and What Does It Do

Main Functionality

ESET SysInspector — created by ESET, the company behind the popular NOD32 antivirus security suite — is a program that scans your computer and looks for “suspicious behavior” (e.g. malware, viruses, rootkits, etc.). It provides you with a list of what it has found, organized in tree format for each navigation, and you then take a look and try to identify any files, components, etc. that may be suspicious.


  • Scans your whole computer and captures information about all running processes, network connections, important registry entries, services, drivers, critical files, scheduled tasks, and files related to running processes/connections/drivers
  • Provides you with information about your system itself, e.g. Windows version, installed software, installed Windows updates and hotfixes, etc.
  • Uses ESET Anti-Stealth technology to find and identify hidden objects, like rootkits
  • After scan, runs heuristics on everything it has found and ranks every item on a scale of one to nine based on how risky it is (with nine being most risky)
  • Allows you to easily filter results based on riskiness and by Microsoft and non-Microsoft items
  • Has a built-in search tool for searching results
  • You can export results into a log that can be shared with others that are helping you troubleshoot, if you are not tech-savvy enough to understand the results yourself
  • When exporting logs, you have the ability to exclude private and personal information from being included in logs
  • You can compare two logs to each other
  • Is portable
  • You don’t need ESET’s paid security software, like NOD32, to use ESET SysInspector — ESET SysInspector is a standalone program that works with and works without NOD32


  • Is a bit slow in scanning, although speed does increase after the first scan
  • You cannot easily run a rescan — no refresh button inside the program, you need to close/reopen it to run a new scan
  • Requires a certain level of tech knowledge to understand what ESET SysInspector gives you
  • You can definitely experience data overload, although that is to be expected with a program like this
  • ESET SysInspector claims that it also scans for startup items but I did not find any analysis of startup items. Maybe I missed it?
  • Is nothing new; functionality such as this has been around for years, such as HijackThis


2013-09-21_090042ESET SysInspector is not an anti-virus, anti-malware, anti-rootkit, etc. program. ESET SysInspector is a diagnostic tools that scans your whole computer and returns to your information about important components such as the registry, running processes, network connections, and more. The idea here is to help you identify files, objects, processes, etc. that are suspicious, which then helps when troubleshooting; that includes troubleshooting when some component on your computer is glitchy and troubleshooting when you are infected with malware, viruses, rootkits, etc.

Although it does rank items based on level of riskiness, ESET SysInspector provides you with information on what is found on your computer — it doesn’t really help you decide what is safe to remove and what isn’t safe to remove. It is up to you to decide what to do with the results ESET SysInspector gives you; you need to be knowledgeable enough to understand the results to make use of ESET SysInspector. On the bright side, ESET SysInspector has an export log ability that allows you to share your results with others, others that may have more knowledge than you. So just because you may not be tech-savvy doesn’t mean ESET SysInspector is useless for you — you can use it for troubleshooting when seeking help from others.

That said, using ESET SysInspector is very easy. Simply run the program, wait while it scans your computer, and then sort through the data it gives you. Scan results are sorted by category and in hierarchical tree format, so viewing the results isn’t too difficult although there is definitely going to be information overload. To help with this information overload, ESET SysInspector provides various different methods of filtering. You can filter by level of riskiness, filter by Microsoft and non-Microsoft components, and search for explicit items.

When ready, you can export the search results into a log, which can be either be saved for viewing later or can be shared with others (if you are getting help with troubleshooting). It is as easy as that.

Conclusion and Download Link

ESET SysInspector is one of those programs you hope to never have to use but should keep in your set of emergency tools, in case you ever do need to use it. There aren’t very many issues with the program itself but rather you should take note of an issue that all diagnostic programs have: you need relevant tech knowledge to understand the information they give you. The good thing is ESET SysInspector can export results for you to share with others, so even if you don’t understand what it is telling you, chances are someone else will.

Overall, ESET SysInspector is a must-have download if you don’t already have a tool that provides you this diagnostic functionality.

Price: Free

Version reviewed:

Supported OS: Windows XP, Vista, Windows 7, and Windows 8

Download size: 3.6 MB

VirusTotal malware scan results: 0/48

Is it portable? Yes

ESET SysInspector homepage

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  • melen001


    Hi Peter…

    You’re probably right but still, the whole day!… just seems too long unless you have an extremely large collection of files…..

    Have a nice day…


  • Peter

    [@melen001]Next morning, the program has been totally lost (no CPU-consumption but no results/actions too). A second try finished after a few minutes.I guess it collected some information during the first long lansting run, which have been cached.

  • melen001


    Hi Peter…..

    Just wondering, how has it gone with ESET SysInspector and have you found out just why it has taken it so log to scan your PC? Sounds like 45 minutes is just too long. It takes about 3 to 4 minutes to scan my PC and I was a little curious if you have found out why it’s taking so long. Bye for now…..

    George Melendez
    Humacao, Puerto Rico

  • melen001


    Hello ASHRAF…..

    Thanks for the comment. ESET SysInspector is nice to have around and, as a matter of fact, recently used it on a friends PC which was infected and he didn’t know what to do or what was causing all his misery. It helped me discover the file that was causing all his troubles and I was able to clean out his “misery” for good. So thanks for letting us know about his app.

    Hope to hear from you soon,


  • Ashraf

    [@Jeanjean] Sorry to hear it won’t work for you :-(

    [@melen001] Glad you like it!

  • melen001

    I have used ESET SysInspector for a short time but I can say that, considering all the information it gathers, it’s relatively fast. That it delivers an overwhelming amount of information on what you have on your PC. It’s true that it’s nothing new and it does more or less what “Hijack This” does but still I find it very useful determining suspicious files and when troubleshooting when you’re infected with malware and viruses and need more info on your files. I look at it as more of a diagnostic tool.

  • Jeanjean

    Same as Peter : from time to time, Comodo firewall shows trafic, but nothing happens after mote than an half hour (the progress bar is at maximum) …the force is with Mr. Boss.

  • Ashraf

    [@Peter] Um, it shouldn’t take that long. It took roughly 5 mins to scan for me.
    [@mukhi] Glad you like it!

  • mukhi

    something free from ESET is interesting! worth trying, definitely.

  • Peter

    As mentioned above (‘Is a bit slow in scanning, ..’) *sigh*
    Runs for more than 45 minutes now and still working (shows ‘Performing loading sequence’, but does not tell, what is loading). Luckily it is bound to one core and does not utilize much resources (< 1MB yet).

    I guess I'll give it a try this night.