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False Positive: phpStorm w/file watchers.


Orillian
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Ok, so I ran phpStorm fine for a couple days with the Ransomeware beta running without issues.

Today that all changed when I opened a project to make some css changes to a website.

The project I was working on uses less to generate css that is then used on the website. I use a feature of phpStorm called file watchers to convert the less to css that is then pushed to the server. What the file watchers do is, on content changing in the less file it automatically recompiles the css and overwrites the original css, in that way I don't have to remember to manually compile my less down to css. Very handy!

Well today after about 2-3 dozen edits to the css my phpStorm instance auto closed and Randsomware beta had tossed my phpStorm64.exe into quarantine. I watched this happen exactly as the filewatcher kicked in to compile the css.

I have a funny feeling other jit or otf compilers might experience this same type of false positive. As in essence things like the css file that triggered the response on my machine was getting overwritten by the filewatcher repeatedly over the course of the 10 minutes I was editing the less file.

Anyways, I hope you can get some use out of this.

O.

PhpStorm64.zip

Malwarebytes Anti-Ransomware.zip

MBAMService.zip

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Reference: https://www.virustotal.com/en/file/8ad05a6e8e50b6e2f15dfe3501999b8eede622bc12d732c1fe6e1791d6e00e9c/analysis/1458787985/ Unsigned

Hello Orillian and :welcome:

Available data strongly suggests a false positive and, if it has not already been done, you may wish to make the following temporary full pathname file entry in MBARW GUI Dashboard -> Exclusions:

                      C:\Program Files (x86)\JetBrains\PhpStorm 2016.1\bin\PhpStorm64.exe

At any time, a development team member, QA team member or staffer may request the above temporary exclusion be altered/removed.

Thank you for beta testing MBARW and your valuable feedback.

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Note: This particular issue will be found with just about any jetBrains application, phpStorm, webStorm, Idea, pyCharm, etc.. with both the 32bit (phpstorm.exe) and 64bit (phpstorm64.exe) executables when the user has regularly activated file watchers.

Thanks for the welcome btw! ;)

O.

Edited by Orillian
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Hello Orillian:

1. The requested logs can help reveal to the devs exactly why those apps are triggering MBARW Beta6 and not others.

2. It would also be informative if select exclusions were entered in MBARW Beta6 for a temporary period.

3. Also, please consider left-clicking the "Follow" box near the top-right corner of this thread for timely notifications.

Thank you again.

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