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Please help identify mysterious program on my computer

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I noticed a program listed in my uninstall list named "Installer" by "Default Company Name." When I begin to uninstall it, it asks me for admin permissions to C:\Windows\Installer\2ef2c531.msi in order to continue the uninstallation, but I'm afraid to do that, because I don't know what it is. There is no location listed for the program. In the registry, it's listed as being in my System32 folder, but I don't see it when I search the folder. My Malwarebytes scan of the folder found nothing malicious.


Does anyone know what this could be?





FRST.txt Addition.txt


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  • Root Admin

Hello @xmonke

Please locate the file and upload it to https://virustotal.com and let them scan the file for any type of known malware threats. You can copy and paste that into the file upload and VirusTotal will scan it.

Then post back the link to the VirusTotal scan results.



I would also recommend you double-check and see if any of these files exist and if so upload them to Virus Total as well

S1 agphtvms; \??\C:\Windows\system32\drivers\agphtvms.sys [X]
S1 amgkrgcm; \??\C:\Windows\system32\drivers\amgkrgcm.sys [X]
S1 bboujlqw; \??\C:\Windows\system32\drivers\bboujlqw.sys [X]
S1 cfdbcubc; \??\C:\Windows\system32\drivers\cfdbcubc.sys [X]
S1 cwnoyyaj; \??\C:\Windows\system32\drivers\cwnoyyaj.sys [X]
S1 dfvwoskw; \??\C:\Windows\system32\drivers\dfvwoskw.sys [X]
S1 edoxkxnz; \??\C:\Windows\system32\drivers\edoxkxnz.sys [X]
S1 emvhlncj; \??\C:\Windows\system32\drivers\emvhlncj.sys [X]
S1 fbtovpos; \??\C:\Windows\system32\drivers\fbtovpos.sys [X]
S1 fgoixrjh; \??\C:\Windows\system32\drivers\fgoixrjh.sys [X]
S1 fpztlmmu; \??\C:\Windows\system32\drivers\fpztlmmu.sys [X]
S1 fteeuspc; \??\C:\Windows\system32\drivers\fteeuspc.sys [X]
S1 gqspqtfw; \??\C:\Windows\system32\drivers\gqspqtfw.sys [X]
S1 gywiplsk; \??\C:\Windows\system32\drivers\gywiplsk.sys [X]
S1 gzcghjsy; \??\C:\Windows\system32\drivers\gzcghjsy.sys [X]
S1 haodbdwj; \??\C:\Windows\system32\drivers\haodbdwj.sys [X]
S1 hnmiodui; \??\C:\Windows\system32\drivers\hnmiodui.sys [X]
S1 hpbsjnrr; \??\C:\Windows\system32\drivers\hpbsjnrr.sys [X]
S1 ibjlajkn; \??\C:\Windows\system32\drivers\ibjlajkn.sys [X]
S1 kldphhnf; \??\C:\Windows\system32\drivers\kldphhnf.sys [X]
S1 kqkpoiei; \??\C:\Windows\system32\drivers\kqkpoiei.sys [X]
S1 krymzvmt; \??\C:\Windows\system32\drivers\krymzvmt.sys [X]
S1 lwinoeda; \??\C:\Windows\system32\drivers\lwinoeda.sys [X]
S1 ohuzirms; \??\C:\Windows\system32\drivers\ohuzirms.sys [X]
S1 paxnqiwb; \??\C:\Windows\system32\drivers\paxnqiwb.sys [X]
S1 qbxqiovf; \??\C:\Windows\system32\drivers\qbxqiovf.sys [X]
S1 rfjcyner; \??\C:\Windows\system32\drivers\rfjcyner.sys [X]
S1 rlvpbrzy; \??\C:\Windows\system32\drivers\rlvpbrzy.sys [X]
S1 rmsghjff; \??\C:\Windows\system32\drivers\rmsghjff.sys [X]
S1 sijvldjc; \??\C:\Windows\system32\drivers\sijvldjc.sys [X]
S1 sqfiicrf; \??\C:\Windows\system32\drivers\sqfiicrf.sys [X]
S1 tnlsvnju; \??\C:\Windows\system32\drivers\tnlsvnju.sys [X]
S1 ubzebrsz; \??\C:\Windows\system32\drivers\ubzebrsz.sys [X]
S1 udqbfrll; \??\C:\Windows\system32\drivers\udqbfrll.sys [X]
S1 ufeenxpr; \??\C:\Windows\system32\drivers\ufeenxpr.sys [X]
S1 umglkozq; \??\C:\Windows\system32\drivers\umglkozq.sys [X]
S1 uxvbvzdc; \??\C:\Windows\system32\drivers\uxvbvzdc.sys [X]
S1 wgyrgjqy; \??\C:\Windows\system32\drivers\wgyrgjqy.sys [X]
S1 wuvyitqf; \??\C:\Windows\system32\drivers\wuvyitqf.sys [X]
S1 xbevxrnh; \??\C:\Windows\system32\drivers\xbevxrnh.sys [X]
S1 xmolgcen; \??\C:\Windows\system32\drivers\xmolgcen.sys [X]
S1 xvmmkfsh; \??\C:\Windows\system32\drivers\xvmmkfsh.sys [X]
S1 ycxvshyj; \??\C:\Windows\system32\drivers\ycxvshyj.sys [X]
S1 ynozmqhi; \??\C:\Windows\system32\drivers\ynozmqhi.sys [X]
S1 ytqujthg; \??\C:\Windows\system32\drivers\ytqujthg.sys [X]
S1 yvpsypjn; \??\C:\Windows\system32\drivers\yvpsypjn.sys [X]
S1 zgcfcoty; \??\C:\Windows\system32\drivers\zgcfcoty.sys [X]
S1 zplbfaoq; \??\C:\Windows\system32\drivers\zplbfaoq.sys [X]


All of this appears to be due to someone attempting to steal software. I would highly recommend whomever is using the computer in this manner consider changing their behavior so as to better protect the computer.


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  • Root Admin

Let me have you run a different scanner to double-check. I don't expect it to find anything, but no harm in checking.

I would suggest a free scan with the ESET Online Scanner

Go to https://download.eset.com/com/eset/tools/online_scanner/latest/esetonlinescanner.exe

  • It will start a download of "esetonlinescanner.exe"
  • Save the file to your system, such as the Downloads folder, or else to the Desktop.
  • Go to the saved file, and double click it to get it started. 
  • When presented with the initial ESET options, click on "Computer Scan".
  • Next, when prompted by Windows, allow it to start by clicking Yes 
  • When prompted for scan type, Click on Full scan 
  • Look at & tick  ( select )   the radio selection "Enable ESET to detect and quarantine potentially unwanted applications"   and click on Start scan button.
  • Have patience.  The entire process may take an hour or more. There is an initial update download.
  • There is a progress window display.
  • You should ignore all prompts to get the ESET antivirus software program.   ( e.g.  their standard program).   You do not need to buy or get or install anything else.
  • When the scan is completed, if something was found, it will show a screen with the number of detected items.  If so, click the button marked “View detected results”.
  • Click The blue “Save scan log” to save the log.
  • If something was removed and you know it is a false finding, you may click on the blue ”Restore cleaned files”  ( in blue, at bottom).
  • Press Continue when all done.  You should click to off the offer for “periodic scanning”.



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  • 4 weeks later...
  • Root Admin

Glad we could help.

If you need this topic reopened, please send a Private Message to any one of the moderating team members. Please include a link to this topic with your request.

This applies only to the originator of this thread. Other members who need assistance please start your own topic in a new thread.

Please review the following for Tips to help protect from infection

Thank you



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