Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

Cuireadh an snáithe seo sa chartlann. Cuir ceist nua má tá cabhair uait.

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

  • 4 fhreagra
  • 0 leis an bhfadhb seo
  • 1 view
  • Freagra is déanaí ó 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.

Réiteach roghnaithe

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)

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.

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.

more options

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

Athraithe ag James ar

more options

Réiteach Roghnaithe

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