1/26: Patco-A Worm Replaces Doc Files
January 26, 2005

W32/Patco-A is a worm for the Windows platform. It copies itself to C:\windows\system\patch802.exe and C:\windows\codeme.exe. W32/Patco-A will periodically copy itself to A: and C:\my documents, replacing doc files with a file of the same name but an .exe extension.

More information can be found at Sophos page.