Member Avatar for posey

Hi
PC has Personal Defender 2009 trojan. Tried downloading Malwarebytes but internet explorer just closes and flips back to the desktop.
Is Personal Defender 2009 closing explorer ?
Is there some way we can keep it open long enough to download the fix.

Thanks for your time

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  • Latest Post Latest Post by cohen

Dani AI

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Given 's follow-up and the suggestions from and , here is a short, practical checklist to confirm the machine is clean and to reduce the chance of reinfection. The goal is verification and containment rather than re-running steps already described in the thread.

  • Run another full scan with an up-to-date on-demand scanner from a different engine (an alternate AV scanner or an offline rescue disk) to catch anything missed by the first tool. If the rogue interfered with normal boot, perform the scans in Safe Mode or from rescue media.
  • Check for persistence: review startup items and services (use Autoruns or msconfig), scheduled tasks, and browser add-ons. Remove or quarantine any entries with unknown publishers or obvious random names.
  • Inspect network and browser settings: confirm IE has no proxy set, reset browser settings if home page/add-ons were changed, and check the hosts file at C:\Windows\System32\drivers\etc\hosts for unauthorized redirects.
  • Run a rootkit/boot-sector check and run sfc /scannow to validate core Windows files. If system files were replaced or tampered with, consider a repair install.
  • Harden and recover: install all outstanding Windows updates, change important passwords from a known-clean device (email, banking, social), delete old system-restore points and create a fresh restore point, and make a full image backup. If suspicion remains (rootkit, system-file tampering, repeated reappearance), a clean OS reinstall is the safest option.

For anyone offering further help, useful artifacts are the antimalware log, an Autoruns export, and a brief system summary (OS edition/service pack, AV present, update status). Those items let responders confirm removal or spot hidden persistence without repeating previous steps.

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Member Avatar for jholland1964

Try clicking on this link MBA-M which is the executable for MBA-M. Save it to the desk top. Close all programs and Windows on your computer, including this one.
Double-click on the icon on your desktop named Download_mbam-setup.exe. This will start the installation of MBAM onto your computer.
# DoubleClick mbam-setup.exe and follow the prompts to install MBA-M.
# Be sure a checkmark is placed next to Update Malwarebytes' Anti-Malware and Launch Malwarebytes' Anti-Malware, then click Finish.
* If an update is found, it will download and install the latest version.
* Once the program has loaded, select Perform full scan, then click Scan.
*When the scan is complete, click OK, then Show Results to view the results.
* Be sure that everything is checked, and click Remove Selected.
* When MBA-M finishes, Notepad will open with the log. Please save it where you can find it easily. The log can also be opened by going to Start > All Programs > Malwarebytes' Anti-Malware > Logs > log-date.txt
Reboot the computer.
Post back with that log.

Member Avatar for posey

Letting you know I solved this - Microsoft issued a patch this morning which sorted out the Explorer problem - enabling us to download Malwarebytes which sorted out the Trojan problem.

Member Avatar for cohen

Can you pls follow jholland's instructions so we can make sure everything has been removed.

Thanks,

Cohen

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