Undeletable Exploits

Kapersky reports these files but won't delete them:

Local Settings\Temp\Temporary Internet Files\Content.IE5\SDIFK1QZ\1[1].htm
suspicion: Exploit.HTML.Mht
Local Settings\Temp\Temporary Internet Files\Content.IE5\SDIFK1QZ\rg[1].htm
suspicion: Exploit.HTML.Mht

The folder SDIFK1QZ is invisible, even when I open cleanmgr and select
Temporary Internet Files> View Files.

Any idea how these files can be deleted?

TIA