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GotoMeeting Opener.exe antivirus false positive
Hello. When I was recently invited to a GotoMeeting I was prompted to download a GotoMeeting Opener.exe file. As part of security best-practices I upload any executable file even from reputable ...
Hello,
We believe that Cyclance is using a variation of the Windows executable format that may not be the industry standard, and thus causing this confusion. The hash of our signed GoTo Opener exe should only change every 6 months or so.
What I would suggest doing is filing a report with Cyclance support to see what can be done from their side of things.
Hash of gotomeeting opener.exe has changed, but problem is still occurring.
https://www.virustotal.com/gui/file/f14a0c9da1072972d31bb919c5fbc25c369bc3e22b0bfa64f3a9047d81480b37/detection
https://www.virustotal.com/gui/file/f14a0c9da1072972d31bb919c5fbc25c369bc3e22b0bfa64f3a9047d81480b37/detection
Our experience has been the hash changes each time you download the file so it is not possible to take any action due to the poor design of the application. ANY other application that was flagged as being bad by antivirus could have the hash shared by the vendor and then you could whitelist it. One would THINK you could install the MSI installer and then use the app installed to join a meeting by ID, but it still insists on shoving the opener program on you.
Options I know about:
- You whitelist the software by its certificate in your AV solution if you trust LogMeIn to not be compromised by a bad actor who infects their software to attack you by way of a trojan.
- Use the Chrome option to attend
- Locate the confirmation email
- Right click on the join webinar button and copy the hyperlink
- Add the parameter ?clientType=html5 to the end of the join URL from Step 2
- Copy the entire new URL with the newly added parameter
- Paste the new join URL in Chrome to join through the web browser
I just re-checked, and now exactly one VirusTotal scanner (Cylance) detects the GotoMeeting opener .exe file as unsafe:
Hello,
We believe that Cyclance is using a variation of the Windows executable format that may not be the industry standard, and thus causing this confusion. The hash of our signed GoTo Opener exe should only change every 6 months or so.
What I would suggest doing is filing a report with Cyclance support to see what can be done from their side of things.
Um, you are incorrect on the hash not changing for 6 months. The hash changes every time you download the file. As a paying customer for your products, I spent HOURS on the phone with various persons trying to get LogMeIn's attention LAST YEAR. I was told the product was designed to change the hash each time it was downloaded, but no one seemed to know WHY. I was told someone would call me back, but days, weeks, months later no one did. I resolved our drama by whitelisting programs signed by your company, but I held my nose doing it.
Don't just take my word for it:
- Build a virtual machine running Windows and leave off any security software.
- Schedule a webinar on your regular PC and start the webinar on your regular PC.
- On the VM without ANY security softare, visit gotowebinar.com and join the webinar using the 9 digit code.
- Download the Goto Opener.
- Download the Goto Opener a second time.
- Calculate the hash for each file...you will see they are DIFFERENT each time you download.
certutil -hashfile "GoToWebinar Opener-1.exe" SHA1
SHA1 hash of GoToWebinar Opener-1.exe: 8c8697d3a2b7a4676df065040992bcfa5ed9670f
certutil -hashfile "GoToWebinar Opener-2.exe" SHA1
SHA1 hash of GoToWebinar Opener -2.exe: 753328e7eb829df3a99b7d20f378882e73f3b9f1
CertUtil: -hashfile command completed successfully.
Thank you your reply. I have no problem opening the app, so there is no need for me to whitelist it... my point was simply to make LogMeIn aware that one of the VirusTotal scanners is detecting their program as suspicious, so they can take appropriate corrective action (either by fixing their software or telling the antivirus vendor to fix the detection).
