Need information about a Malware infection i have.

[avaldi]

Hello everybody! (Sorry in advance for the long post.)

I have a new question today, At 22:48PM, 22:52PM, 22:55PM, 22:58PM PST
My trend micro antivirus found some infected files that it labeled "PAK_Generic.001" and PAK_Generic.005"(.005 is listed three times)
The actual file names are as follows:

C:\users\owner\appdata\local\temp\ww39560\internet.dll
(22:48PM PAK_Generic.0005)

C:\users\owner\appdata\local\temp\ww39560\schdwash.exe
(22:52PM PAK_Generic.001)

c:\users\owner\appdata\local\temp\ww39560\engsetup.dll
(22:55PM PAK_Generic.005)

C:\users\owner\appdata\local\temp\ww39560\english.dll
(22:58PM PAK_Generic.005)

Source type: File

Detected by: File monitor

First action: Quarantined success

Second action: (Blank)

It says it successfully quarantined them and i hit the "Delete" button, Presumably nuking the problem. The problem is this.

1.) when I'm not using the internet i unplug the ethernet chord. (On this occasion it was out for 4 hours before the files were detected)

2.) I was running a webroot spysweeper scan at the time trend micro found the files ( trend micro has no schedueled run times, I run it every three or so days, but it does have it's active protection active.)

3.) Afterwards i kept my computer unplugged and ran a full trend micro scan, SPYBOT scan, full windows defender scan, and another webroot scan which found nothing to be amiss.

So, I guess my question is thus.

How do i find out what it was, or if it left any remnants in my system and if so how do i get rid of them?

Also as a side note: I looked through my computer to see if anything was changed or messed up. So i looked in the properties of almost all of my files when i found something strange. This only appears in pictures.

i have two backround pictures from sites marked as safe from Mcafee siteadvisor and browser defender.

They are the only pictures saved to my computer(I deleted the default ones a long time ago because i didn't like them) when i looked in properties -> security tab. I see this:

Account Unknown(S-1-5-21-2675523129-3664480364-4030225571-1001)
Account Unknown(S-1-5-21-2675523129-3664480364-4030225571-1002)

This only shows up for those two pictures and they have full access, However i have never looked in properties before so i don't know if it's new or not.

Also under the scan tab (Only shows up if you have trend micro i think)
it says it's never found a problem with them.

So what does this all mean? (I'm on Vista if that helps)

Thank you to anyone who takes the time to read/answer my question!