This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Əgər kömək lazımdırsa lütfən yeni sual verin.

My malware app is reporting a Trojan.YZST.9002 loaded from Firefox executables

  • 4 cavab
  • 0 have this problem
  • 1 view
  • Last reply by Jim

Jim
Jim
more options

My System Mechanic malware search system has quarantined a virus located in two Firefox locations: Virus is W32/Trojan.YZST-9002 LOCATE IN: C:/PROGRAM FILES/MOZILLA FIREFOX/UNINSTALL/HELPER.EXE C:/PROGRAMFILES/MOZILLA FIREFOX/MAINTENANCE SERVICES_UNINSTALL... I will use the delete process and remove them and watch for future loads.

My System Mechanic malware search system has quarantined a virus located in two Firefox locations: Virus is W32/Trojan.YZST-9002 LOCATE IN: C:/PROGRAM FILES/MOZILLA FIREFOX/UNINSTALL/HELPER.EXE C:/PROGRAMFILES/MOZILLA FIREFOX/MAINTENANCE SERVICES_UNINSTALL... I will use the delete process and remove them and watch for future loads.

Chosen solution

I will close this for now and see if I have any future incidents. Thanks, Jim

Read this answer in context 👍 0

All Replies (4)

Jim
Jim Question owner
more options

I have been using System Mechanic for many years now and it just recently found two files named above within mozilla folders. They had been moved to quarantine and I deleted them yesterday. I did see one reference to the files via google so will leave this out there in case others see it.

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Those files are quite normal on Windows. UNINSTALL/HELPER.EXE is the uninstaller for Firefox.

MAINTENANCE SERVICES_UNINSTALL is the uninstaller for the Mozilla Maintenance Service that is used to update Firefox in the background.

Both these files interact with the program folder, so that might alert System Mechanic.

James
James
  • Top 25 Contributor
  • Moderator
more options

I wonder why System Mechanic only recently thought the two normal things are trojans though, besides being false positives hmm.

Modified by James

Jim
Jim Question owner
more options

Seçilmiş Həll

I will close this for now and see if I have any future incidents. Thanks, Jim