What is DC4.dll, DC5.dll etc.?

Viruses and worms
1

Hi all, I’m new to the forum. I’ve been using Avast home for a long time, but haven’t had a virus, until now… recently Avast keeps detecting viruses such as:

1/2/2006 2:32:21 PM 1136230341 Admin 756 Sign of “Win32:CTX” has been found in “C:\RECYCLER\S-1-5-18\Dc4.dll” file.
1/3/2006 11:19:20 PM 1136348360 Admin 2432 Sign of “Win32:CTX” has been found in “C:\RECYCLER\S-1-5-18\Dc5.dll” file.
1/4/2006 7:54:15 AM 1136379255 Admin 2432 Sign of “Win32:CTX” has been found in “C:\RECYCLER\S-1-5-21-861567501-2025429265-839522115-1005\Dc4.dll” file.

I haven’t had any luck finding out what DC4.dll, DC5.dll (i’ve also seen DC2.dll) are. I’ve also run Trend Micro’s online scanner and it doesn’t find anything.

One thing to note is that I also tried running Panda’s online virus scanner a couple of days ago. Avast complained about one of it’s Activex files being a virus, so I removed that program. But strangely enough, I’m pretty sure I’ve only seen these virus warnings after running an online virus scanner.

Anyone have any idea what these files are? any reason to worry?

Thanks ;D

2

Panda’s on-line scanner doesn’t encrypt its virus signature files so they get detected by avast.

Clear all your Recycle Bins. - Wasn’t avast able to delete them?

There are lots of hits on google for the DC?.dll files, this is just sone relating to DC5.dll
http://www.techsupportforum.com/computer/topic/33564-1.html
http://www.alegsa.com.ar/Visitas/index17/Recycler%20folder.php

3

Dc5.dll may be part of a Virtumonde infection:

Spyware:Spyware/Virtumonde No disinfected C:\Recycled\Dc5.dll

http://forums.spywareinfo.com/index.php?showtopic=46550

There are some removal instructions here you could try if the probelm persists:

http://www.bleepingcomputer.com/forums/topic18610.html