Today, I discovered some odd temporary files created within C:\Documents and Settings\(My Name)\Local Settings\temp that I had no idea where they came from. All were 0kb, and here are the date and time they were created.
9g02FD.tmp - Today, April 21, 2010, 2:09:08 PM
09i2FF.tmp - Today, April 21, 2010, 2:09:27 PM
59h283.tmp - Today, April 21, 2010, 12:51:24 PM
83x310.tmp - Today, April 21, 2010, 2:11:32 PM
gtg285.tmp - Today, April 21, 2010, 12:52:36 PM
k46287.tmp - Today, April 21, 2010, 12:53:03 PM
quh261.tmp - Today, April 21, 2010, 12:47:06 PM
vjr272.tmp - Today, April 21, 2010, 12:49:43 PM
I decided that no good could come from whatever they might have been, and used Spybot's file shredder to promptly remove them.
From there I went to my prefetch folder and had a look at the files modified today to see if I could trace the files back to one program. The only program running near the times was wuauclt.exe (The windows updater) running at 2:05 PM. Searching all files modified on that date, I found files in the Software Distribution folder (edb.chk and such) modified at about 2:09 to 2:10 and it seemed to fit the bill that this was a Windows update. Wishing to clarify, I decided to pull open the Event Log to confirm my suspicions.
In event log however, I noticed a variety of odd entries (none reappearing at dates other than today) at the times of those temporary files. Here are the two events, one begins with a change of a port and the other removes the port. The pattern this goes in that two of the ports were added and then both of the same ports were subsequently removed. The Event ID for all of these is 852, for which I can find next to no information.
A change has been made to the Windows Firewall port exception list.
Change type: Add
New Settings:
Name: Windows Media Format SDK (firefox.exe)
Port number: 2841 (*Also as 2844,2840,2832,2833,2833,2834,2835)
Protocol: UDP
State: Enabled
Scope: All subnets
Old Settings:
Name: -
Port number: -
Protocol: -
State: -
Scope: -
A change has been made to the Windows Firewall port exception list.
Policy origin: Local Policy
Profile changed: Standard
Interface: All interfaces
Change type: Remove
New Settings:
Name: -
Port number: -
Protocol: -
State: -
Scope: -
Old Settings:
Name: Windows Media Format SDK (firefox.exe)
Port number: 2834 (*And the exact same numbers as above)
Protocol: UDP
State: Enabled
Scope: All subnets
While this did seem to correspond with the Windows update, I did not think the updates related in anyway to Firefox, and was confused by this. I'm not sure if this is an attempt by a foreign presence to change my firewall settings or simply some glitch. Hopefully some kind user can provide the answers.
I have posted this on another forum where the answer I received was that I may be infected by a virus or otherwise program with intent to harm my computer. As I post this I am running MalwareBytes Anti-Malware, but I have had no symptoms that would indicate any infection. The computer that these logs appear on is used mainly for work and light browsing. I personally check all files created at the end of every day to see if anything gets by, and generally believe that I keep a tight security.
Thanks again.