Possible false positive but not sure

[Cookiegal]

I have a user who ran MBAM and the file C:\WINDOWS\system32\ENCAPI32.DLL was detected as Trojan.Tracur and quarantined. There were no registry entries detected that normally accompany the "bad" encapi32.dll file unless perhaps she ran something that may have deleted them before but not the file itself. She states that she doesn't and never did have MS Encarta on her computer (as I understand the legit file belongs to that program).

The problem is that she deleted the file from quarantine already so we don't have access to it. Would a developer's log still be helpful in this case? If so, then I will get one. Please advise.

I see another user has posted here about the same possibility but posted in an older thread:

http://forums.malwarebytes.org/index.php?showtopic=11180

Here's a link to my thread at TSG:

http://forums.techguy.org/virus-other-malw...tml#post7456477

And a copy of the MBAM log:

Malwarebytes' Anti-Malware 1.46

www.malwarebytes.org

Database version: 4214

Windows 5.1.2600 Service Pack 2

Internet Explorer 6.0.2900.2180

6/19/2010 1:09:14 AM

mbam-log-2010-06-19 (01-09-14).txt

Scan type: Quick scan

Objects scanned: 138579

Time elapsed: 9 minute(s), 1 second(s)

Memory Processes Infected: 0

Memory Modules Infected: 0

Registry Keys Infected: 0

Registry Values Infected: 0

Registry Data Items Infected: 0

Folders Infected: 0

Files Infected: 1

Memory Processes Infected:

(No malicious items detected)

Memory Modules Infected:

(No malicious items detected)

Registry Keys Infected:

(No malicious items detected)

Registry Values Infected:

(No malicious items detected)

Registry Data Items Infected:

(No malicious items detected)

Folders Infected:

(No malicious items detected)

Files Infected:

C:\WINDOWS\system32\ENCAPI32.DLL (Trojan.Tracur) -> Quarantined and deleted successfully.

[nosirrah]

I think I can fix this without any additional info.

[Cookiegal]

I think I can fix this without any additional info.

So I understand that this is indeed a false positive even if the user doesn't have MS Encarta?

If so, do you know what other application might install this file legitimately? I'm not finding much on it other than Encarta or the malicious version.

Thanks for your assistance. I really appreciate it.

[nosirrah]

It seems that some of these are indeed malware but the next update should eliminate the FPs.

[Cookiegal]

It seems that some of these are indeed malware but the next update should eliminate the FPs.

Thanks Bruce. I really wish she hadn't deleted the file.