What is UnknownSys.dll?

UnknownSys.dll is usually located in the 'C:\WINDOWS\Installer\{2096fef0-bdda-4404-bb56-84c9d1026565}\' folder.

If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.

Vendor and version information [?]

UnknownSys.dll does not have any version or vendor information.

Hashes [?]


What will you do with UnknownSys.dll?

To help other users, please let us know what you will do with UnknownSys.dll:

What did other users do?

The poll result listed below shows what users chose to do with UnknownSys.dll. 68% have voted for removal. Based on votes from 41 users.

User vote results: There were 28 votes to remove and 13 votes to keep

NOTE: Please do not use this poll as the only source of input to determine what you will do with UnknownSys.dll.

Malware or legitimate?

If you feel that you need more information to determine if your should keep this file or remove it, please read this guide.

Please select the option that best describe your thoughts on the information provided on this web page

Free online surveys

And now some shameless self promotion ;)

A screenshot of FreeFixer's scan result.Hi, my name is Roger Karlsson. I've been running this website since 2006. I want to let you know about the FreeFixer program. FreeFixer is a freeware tool that analyzes your system and let you manually identify unwanted programs. Once you've identified some malware files, FreeFixer is pretty good at removing them. You can download FreeFixer here. It runs on Windows 2000/XP/2003/2008/2016/2019/Vista/7/8/8.1/10. Supports both 32- and 64-bit Windows.

If you have questions, feedback on FreeFixer or the freefixer.com website, need help analyzing FreeFixer's scan result or just want to say hello, please contact me. You can find my email address at the contact page.


Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.

I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.

Roger Karlsson writes

2 thumbs

Here is what some anti-virus programs say about the file:

File: UnknownSys.dll
MD5: d6f12d4b823be530b31e6a925c843a05

Scanner results
Scan taken on 17 Jan 2009 23:46:34 (GMT)
A-Squared Found Trojan.Win32.Agent!IK
AntiVir Found TR/Downloader.Gen
ArcaVir Found nothing
Avast Found Win32:Agent-SUT
AVG Antivirus Found Agent.NTK
BitDefender Found Trojan.Generic.447033
ClamAV Found Trojan.Agent-13058
CPsecure Found nothing
Dr.Web Found Trojan.DownLoader.46256
F-Prot Antivirus Found W32/Agent.Z.gen!Eldorado
F-Secure Anti-Virus Found Trojan.Win32.Agent.eld
G DATA Found nothing
Ikarus Found Trojan.Win32.Agent
Kaspersky Anti-Virus Found Trojan.Win32.Agent.eld
NOD32 Found a variant of Win32/Agent.ELD
Norman Virus Control Found W32/Agent.dam
Panda Antivirus Found nothing
Sophos Antivirus Found nothing
VirusBuster Found Trojan.Agent.CWMR
VBA32 Found Trojan.Win32.Agent.eld

# 17 Jan 2009, 15:49

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