Thank you for being a valued part of the CNET community. As of December 1, 2020, the forums are in read-only format. In early 2021, CNET Forums will no longer be available. We are grateful for the participation and advice you have provided to one another over the years.

Thanks,

CNET Support

Resolved Question

Trojen Horse Lockscreen.AR

Dec 20, 2012 12:52PM PST

This trojan horse has embeded itself in
C:\windows\system32\rundll.exe (2456):\memory-01520000
Core
It says : Object is inaccessible
How can I fix this?
It says the computer/file is infected.
Help Please.

Discussion is locked

classylu has chosen the best answer to their question. View answer

Best Answer

- Collapse -
Similar to your dad's problem?
Dec 20, 2012 11:24PM PST

classylu..

I see you posted this last night, along with another post asking about ransomware (Citadel/Reveton) your dad had a problem with. Is this a different computer, or a duplicate post with the same problem?

Please see: Remove the FBI Online Agent Ransomware (Uninstall Guide)

Note where it says:

'Please remember that this is a computer infection and that the FBI is not locking your computer, so please do not be worried about the messages in the lock screen. This infection is detected by a variety of anti-virus vendors using the Trojan:Win32/LockScreen'

'Symptoms that may be in a HijackThis Log: O4 - HKCU\..\Run: [dllexp] rundll32.exe "%AppData%\dllexp.dll",exp

There are various other ways of removing it, if the two methods prove unsuccessful. If this post is a separate issue than your dad's, kindly post back (with details included) and let us know.

Best of luck..
Carol

- Collapse -
Thank you!
Jan 11, 2013 4:31AM PST

Your removal advice worked. So far the trijan horse has not apeared again. I have my fingers crossed that it won't.
I appreciate your help enormously!!
Lucille