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Can you tell me why Malwarebytes has identified 2 Firefox files during a scan?

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I am running Firefox Quantum 57.0.3 under Windows 10 64 bit. I have Malwarebytes Premium 3.3.1.2183 installed. During my last scheduled scan it identified 2 Firefox files as Potentially Unwanted Programs. These were: PUP.Optional.WinBing - DSENGINE.JS PUP.Optional.WinBing - DSENGINE.CFG Please identify what these files do, if they are necessary, and therefore what action I should take.

I am running Firefox Quantum 57.0.3 under Windows 10 64 bit. I have Malwarebytes Premium 3.3.1.2183 installed. During my last scheduled scan it identified 2 Firefox files as Potentially Unwanted Programs. These were: PUP.Optional.WinBing - DSENGINE.JS PUP.Optional.WinBing - DSENGINE.CFG Please identify what these files do, if they are necessary, and therefore what action I should take.

Giải pháp được chọn

BSM1 said

I am running Firefox Quantum 57.0.3 under Windows 10 64 bit. I have Malwarebytes Premium 3.3.1.2183 installed. During my last scheduled scan it identified 2 Firefox files as Potentially Unwanted Programs. These were: PUP.Optional.WinBing - DSENGINE.JS PUP.Optional.WinBing - DSENGINE.CFG Please identify what these files do, if they are necessary, and therefore what action I should take.

This was likely caused by installing AdAware or Web Companion from Lavasoft, which may be bundled with other software. None of this comes from Mozilla or the Firefox web browser.

https://support.mozilla.org/en-US/forums/contributors/712839

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Phần bổ trợ đã cài đặt

  • Shockwave Flash 28.0 r0

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  • Chuỗi đại diện người dùng: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0

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FredMcD
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We need the name of the files in question. Can you post the full message here?

We need the name of the files in question. Can you post the full message here?
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Người tạo câu hỏi

The names of the files are included in the question! DSENGINE.JS and DSENGINE.CFG

The names of the files are included in the question! DSENGINE.JS and DSENGINE.CFG
philipp
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Câu trả lời hữu ích

those files are not part of any legitimate Firefox installation...

those files are not part of any legitimate Firefox installation...
FredMcD
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4245 giải pháp 59390 câu trả lời
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You may have ad/mal-ware. Further information can be found in this article; https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware?cache=no

Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.

You may have ad/mal-ware. Further information can be found in this article; https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware?cache=no Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.
James
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BSM1 said

I am running Firefox Quantum 57.0.3 under Windows 10 64 bit. I have Malwarebytes Premium 3.3.1.2183 installed. During my last scheduled scan it identified 2 Firefox files as Potentially Unwanted Programs. These were: PUP.Optional.WinBing - DSENGINE.JS PUP.Optional.WinBing - DSENGINE.CFG Please identify what these files do, if they are necessary, and therefore what action I should take.

This was likely caused by installing AdAware or Web Companion from Lavasoft, which may be bundled with other software. None of this comes from Mozilla or the Firefox web browser.

https://support.mozilla.org/en-US/forums/contributors/712839

''BSM1 [[#question-1197827|said]]'' <blockquote> I am running Firefox Quantum 57.0.3 under Windows 10 64 bit. I have Malwarebytes Premium 3.3.1.2183 installed. During my last scheduled scan it identified 2 Firefox files as Potentially Unwanted Programs. These were: PUP.Optional.WinBing - DSENGINE.JS PUP.Optional.WinBing - DSENGINE.CFG Please identify what these files do, if they are necessary, and therefore what action I should take. </blockquote> This was likely caused by installing AdAware or Web Companion from Lavasoft, which may be bundled with other software. None of this comes from Mozilla or the Firefox web browser. https://support.mozilla.org/en-US/forums/contributors/712839
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Người tạo câu hỏi

I used to have AdAware installed but a recent update of Firefox terminated this. AdAware does not appear in my plug-ins or extensions. I have now run AdwCleaner and it did not find the 2 files in question. They both have a date of 22 Dec 2017, so are recent. Do you believe it would be safe to delete them?

I used to have AdAware installed but a recent update of Firefox terminated this. AdAware does not appear in my plug-ins or extensions. I have now run AdwCleaner and it did not find the 2 files in question. They both have a date of 22 Dec 2017, so are recent. Do you believe it would be safe to delete them?
Shadow110 1072 giải pháp 14836 câu trả lời
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Yes delete them. I had the issue myself a month ago when a program I installed was not the program it said it was and I dug the program out after 2 days of it changing my search to bing. I also got the 2 files yesterday as they were just added to Malwarebytes. Please see my post there : https://forums.malwarebytes.com/topic/217648-firefox-57-false-positive/

Please let us know if this solved your issue or if need further assistance.

Yes delete them. I had the issue myself a month ago when a program I installed was not the program it said it was and I dug the program out after 2 days of it changing my search to bing. I also got the 2 files yesterday as they were just added to Malwarebytes. Please see my post there : https://forums.malwarebytes.com/topic/217648-firefox-57-false-positive/ Please let us know if this solved your issue or if need further assistance.

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Người tạo câu hỏi

Pkshadow Many thanks for the info and links. I checked all the various links and it appears to be a generic problem. Last night's MBAM scan threw up the two files again so I have deleted them. I had run AdwCleaner earlier but had only removed items related to Adaware. So I checked for the presence of WebCompanion and that was hiding as well. So I have now run AdwCleaner again and removed everything it found. I have not had the problem with constantly reverting to Bing. The only other problem I have, which is probably not related, is that Word 2010 keeps corrupting normal.dotm, which is a pain in the ass! Once again, thanks.

Pkshadow Many thanks for the info and links. I checked all the various links and it appears to be a generic problem. Last night's MBAM scan threw up the two files again so I have deleted them. I had run AdwCleaner earlier but had only removed items related to Adaware. So I checked for the presence of WebCompanion and that was hiding as well. So I have now run AdwCleaner again and removed everything it found. I have not had the problem with constantly reverting to Bing. The only other problem I have, which is probably not related, is that Word 2010 keeps corrupting normal.dotm, which is a pain in the ass! Once again, thanks.

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