We have had following problem on our Windows2003 server for weeks now, every day the folder on our share are being made hidden and replaced by .exe files with the same names as the original folders. I can "Un-hide" them and hide or remove the .exe "folders" but it keeps coming back within some hours. Windows is fully updated, we do a "thorough" virus scan (F-Prot) every night with no detections, and SpyBot S&D (recommended by F-Prot support tech) only detects 3 "Tracking cookies" which does not sound likely to hide folders.
We do have presence of "W32/Conficker" in the network which is not a very nice one, so of course cleaning clients is a high priority, but I don't know which is the more likely - that it is hiding on the server or keep coming from a client attaching to the Share.
Any advice is most appreciated!