- W32.Klez.H@mm is a modified variant of the worm W32.Klez.E@mm. This variant is capable of spreading by email and network shares. It is also capable of infecting files. Removal tool Symantec has provided a tool to remove infections of all known variants of W32.Klez and W32.ElKern. Click here ...www.symantec.com/avcenter/venc/data/w32.klez.h@mm.html